WO2010130098A1 - 一种生物降解聚酯及其制备方法 - Google Patents
一种生物降解聚酯及其制备方法 Download PDFInfo
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- WO2010130098A1 WO2010130098A1 PCT/CN2009/071805 CN2009071805W WO2010130098A1 WO 2010130098 A1 WO2010130098 A1 WO 2010130098A1 CN 2009071805 W CN2009071805 W CN 2009071805W WO 2010130098 A1 WO2010130098 A1 WO 2010130098A1
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- C—CHEMISTRY; METALLURGY
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/62—Compostable, hydrosoluble or hydrodegradable materials
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4205—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups
- C08G18/4208—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups
- C08G18/4225—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups derived from residues obtained from the manufacture of dimethylterephthalate and from polyhydroxy compounds
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4244—Polycondensates having carboxylic or carbonic ester groups in the main chain containing oxygen in the form of ether groups
- C08G18/4247—Polycondensates having carboxylic or carbonic ester groups in the main chain containing oxygen in the form of ether groups derived from polyols containing at least one ether group and polycarboxylic acids
- C08G18/4252—Polycondensates having carboxylic or carbonic ester groups in the main chain containing oxygen in the form of ether groups derived from polyols containing at least one ether group and polycarboxylic acids derived from polyols containing polyether groups and polycarboxylic acids
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/46—Polycondensates having carboxylic or carbonic ester groups in the main chain having heteroatoms other than oxygen
- C08G18/4615—Polycondensates having carboxylic or carbonic ester groups in the main chain having heteroatoms other than oxygen containing nitrogen
- C08G18/4638—Polycondensates having carboxylic or carbonic ester groups in the main chain having heteroatoms other than oxygen containing nitrogen containing heterocyclic rings having at least one nitrogen atom in the ring
- C08G18/4661—Polycondensates having carboxylic or carbonic ester groups in the main chain having heteroatoms other than oxygen containing nitrogen containing heterocyclic rings having at least one nitrogen atom in the ring containing three nitrogen atoms in the ring
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/73—Polyisocyanates or polyisothiocyanates acyclic
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- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/19—Hydroxy compounds containing aromatic rings
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- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/20—Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/66—Polyesters containing oxygen in the form of ether groups
- C08G63/668—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/68—Polyesters containing atoms other than carbon, hydrogen and oxygen
- C08G63/685—Polyesters containing atoms other than carbon, hydrogen and oxygen containing nitrogen
- C08G63/6854—Polyesters containing atoms other than carbon, hydrogen and oxygen containing nitrogen derived from polycarboxylic acids and polyhydroxy compounds
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- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/68—Polyesters containing atoms other than carbon, hydrogen and oxygen
- C08G63/695—Polyesters containing atoms other than carbon, hydrogen and oxygen containing silicon
- C08G63/6954—Polyesters containing atoms other than carbon, hydrogen and oxygen containing silicon derived from polxycarboxylic acids and polyhydroxy compounds
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- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/91—Polymers modified by chemical after-treatment
- C08G63/914—Polymers modified by chemical after-treatment derived from polycarboxylic acids and polyhydroxy compounds
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- C08G2230/00—Compositions for preparing biodegradable polymers
Definitions
- the present invention relates to a biodegradable polyester and a preparation method thereof, and belongs to the technical field of biodegradable copolyester products.
- Biodegradable polymers are a class of polymeric materials that decompose into carbon dioxide and water after a certain inter-span span under suitable environmental conditions. This degradation process is usually divided into two processes. First, the macromolecule undergoes hydrolysis, light /
- the molecular weight becomes small after oxygen degradation, and is further consumed by microorganisms, which may be bacteria, fungi, yeasts, algae, and the like.
- microorganisms which may be bacteria, fungi, yeasts, algae, and the like.
- a biodegradability test method is given, which is a more authoritative test method in the method of biodegradability test for plastic materials.
- Each country and region defines its own testing and testing standards for degradable plastics according to the test conditions and results, including the European Union's EN13432 test standard, the US ASTM D6400, and China's GB T 19277.
- PHA Hydroxy phthalate (salt) polymer
- PLA polylactic acid
- PCL polyhydroxybutyl ester
- PCL polycaprolactone
- PHBV hydroxybutyl acid-hydroxyvalerate copolyester
- polyesters obtained by polycondensation of fatty dibasic acids (or esters) with diols are also biodegradable ( ⁇ 81 & 11 ⁇ 61 & 1, ed., Applied Science, 1976, p.775
- Polyester materials obtained by completely having aliphatic diols and dibasic acids have low melting points and glass transition temperatures, and have disadvantages in application.
- Aromatic polyesters such as polyethylene terephthalate (PET) and polybutylene terephthalate ( ⁇
- the aliphatic polyester obtained by polycondensation of succinic acid and aliphatic diol can be enzymatically degraded; polyesters formed from aromatic diacids and aliphatic diols, such as PBT and PET, cannot be degraded by the enzyme preparation; Block copolyesters derived from PCL and PBT are capable of enzymatic degradation.
- a polyester copolymer formed of an aromatic dibasic acid and an aliphatic diol has biodegradation characteristics, and the structure of the copolyester requires at least 85% by mole of the diol fragment in the polyester. 1 terephthalic acid fragment.
- the patent proposes to introduce a 2.5% molar ratio of a metal salt of dimethyl isophthalate-5-sulfonic acid or a diol unit having a broken chain ether structure into the copolymer structure. .
- this patent does not have the microbiological degradation result of the material, only the boiled experiment, and the mechanical properties of the material are not satisfactory.
- a fatty acid is obtained by polycondensation of a fatty dibasic acid and an aromatic dibasic acid as repeating units to obtain a block and a linear random copolyester.
- the dicarboxylic acid combination is composed of a fat dibasic acid having a ratio of 5-65% by mole and a ratio of 35-95%
- the aromatic dibasic acid composition of the molar ratio, and the diol is an aliphatic diol.
- this material cannot be used in the field of extrusion molding because of its low melt viscosity and melt strength. For example, it is difficult to blow, foam, and cast a film with this material.
- Patent US5661193 discloses a fatty acid-aromatic acid copolyester having a branched, random structure, which is biodegradable and used for making foam materials.
- the composition of the polyester is 30-95% by mole of the aliphatic dibasic acid polycondensation unit, 5-70%
- the molar ratio of the aromatic dibasic acid polycondensation unit to the diol unit in the polycondensation unit is an aliphatic diol polycondensation unit.
- the branching agent content is 0.01-10% by weight of the dibasic acid for polymerization.
- the branching agents disclosed in the patent are polycarboxylic aliphatic acids and/or acid anhydrides, polycarboxy aromatic acids and/or acid anhydrides, polyhydroxy aliphatic alcohols and hydroxyisocyanurates.
- Patent EP A565235 proposes a constituent unit containing a carbamate group (-NH-C(O)O-
- the aliphatic copolyester the basic constituent unit of the copolyester is succinic acid and an aliphatic diol, and has biodegradability.
- a diisocyanate reaction unit is introduced into the reaction.
- the diisocyanate reaction unit easily forms a gel point in the reaction, and the reaction control is difficult, and the appearance of the gel leads to a decrease in the use property of the material.
- Patent US6018004 proposes a constituent unit containing a carbamate group (-NH-C(O)O-
- the aliphatic copolyester the basic constituent unit of the copolyester is succinic acid and an aliphatic diol, and has biodegradability.
- a diisocyanate reaction unit is introduced into the reaction.
- the diisocyanate reaction unit easily forms a gel point in the reaction, and the reaction
- polyester materials are also disclosed, which also have biodegradability.
- the polycondensation unit of the dibasic acid in one of the biodegradable polyesters is composed of 35-95% by mole of the aliphatic group dibasic acid polycondensation unit, 5-65% by mole of the phthalic acid polycondensation unit, and 0-5%.
- the above polyester composition may form another biodegradable copolyester with the structure described below, which has a structure of: 0.01 to 5% by mole (the total number of moles of the dibasic acid polycondensation unit is 100)
- the patent specifically defines such substances, including aromatic polybasic acids, aliphatic polybasic acids, aliphatic polyols, aromatic hydroxy acids, etc.;
- the structure can also be 0.1-5%
- diisocyanate chemicals Part by weight of diisocyanate chemicals, the patent also defines these substances, including aromatic diisocyanates and aliphatic diisocyanates.
- a polyester material which has biodegradability.
- the polyester material consists of a 95-99.9% molar ratio of A and a 0.01-5% molar ratio of B: A from 20-95%
- a molar ratio of an aromatic dibasic acid (or its esterified product) and a dibasic hydroxyl group, an amino alcohol chemical; B is composed of a single cluster or a plurality of clusters of isocyanurate isocyanate chemicals.
- the preparation method has the characteristics of polyester polycondensation reaction and curing reaction.
- the diol used in the component is an aliphatic diol or a polyether diol.
- isocyanurate can improve the temperature resistance of the material, the isocyanurate defined in the patent makes the reaction control difficult and has more gel points.
- Aromatic copolyesters are easier to process than polyester materials without chain extension, but the resulting gel particles can interfere with the processing of the film, especially when the cycle time is longer and the mechanical properties are lower.
- the object of the present invention is to overcome the disadvantages of the prior art and to provide a biodegradable aliphatic having better appearance quality, excellent heat resistance and mechanical properties.
- An aromatic polyester material which can be used as a material for preparing a film material, which significantly changes the characteristics of the sticky roll and has a wide range of applications.
- Another object of the present invention is to provide a process for producing the above polyester material.
- a biodegradable polyester comprising 94-100 mol% of component A and 0-6 mol% of component B
- the component A and the component B have a number average molecular weight of 6000-135000 g/mol, and an intrinsic viscosity of 0.6-1.8 dl/g (solvate is a mass ratio of 7:3 phenol-carbon tetrachloride)
- solvate is a mass ratio of 7:3 phenol-carbon tetrachloride
- the component A consists of component A1: component A2 in a molar ratio of 0.35 to 1.6:1.
- the component A1 is composed of 20-100 mol% of the component Al 1 and 0-80 mol% of the component A12;
- succinic acid glutaric acid, adipic acid, azelaic acid, sebacic acid, tridecanedioic acid, maleic anhydride, 1,1 cyclobutanedicarboxylic acid, 1,1-cyclohexyl diacetic acid , 1,4-cyclohexyl diacetic acid, cyclohexan-1, 2 Dicarboxylic anhydride, n-barium 2,3-dicarboxylic acid or adamantane diacetic acid.
- aromatic dibasic acid or aromatic dibasic acid ester preferably has a carbon number of c 4 -c 18
- dibasic acid or an ester thereof especially one or a mixture of two or more selected from the group consisting of dibasic acids or esterates thereof: terephthalic acid, phthalic acid, isophthalic acid, para-benzene Diacetic acid, phthalic acid.
- the component A2 is composed of 80-99.9 mol% of the component A21 and 0.1-20 mol% of the component A22; [21] the component A21 is a C 2 -C 8 aliphatic group The alcohol and the number of carbon atoms are C 5 -C 16
- An aliphatic diol especially one or a mixture of two or more selected from the group consisting of ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, 1,4-butanediol, 1,5-pentanediol, 2,2-dimethyl-1,3-propanediol, 2-ethyl-2-tert-butyl-1,3-propanediol, 2,2 , 4-trimethyl-1,6-hexanediol; the cyclized aliphatic diol is a C 5 -C 16 carbon atom
- the molecular weight range of the aliphatic polyether diol isosorbide.
- the aliphatic polyether diol is preferably a mixture of one or more of the following polyether diols: a dimer of epoxy oxime, a trimer of oxirane, a polyethylene epoxide, a poly a propylene acrylate, a polytetrahydrofuran, an epoxy oxime-epoxy propylene copolymer;
- the hydroxy fatty acid is preferably a hydroxy organic acid having a carbon number of c 4 -c 18 , especially selected from the group consisting of the following hydroxy organic groups;
- glycolic acid glycolic acid, ⁇ -hydroxypropionic acid, ⁇ -malic acid, ⁇ -hydroxybutyric acid, hydroxysuccinic acid, 5- Hydroxyvaleric acid, 3-hydroxyhexanoic acid, 5-hydroxyhexanoic acid, 6-hydroxycaproic acid, 7-hydroxyheptanoic acid, 3,5-dihydroxyheptanoic acid, hydroxyoctanoic acid, 5-hydroxydecanoic acid, 5-hydroxy-deca Diacid, 9,10,16-trihydroxyhexadecanoic acid, 3,4-dihydroxycinnamic acid, p-hydroxycinnamic acid, agaric acid or a polymer thereof.
- the component A22 is at least one of an aromatic ring-containing diol, an aromatic ring-containing polyether diol, or an aromatic ring-containing hydroxy organic acid having a carbon number; and may also have a different carbon chain length. At least one of an aromatic ring-containing diol, an aromatic ring-containing polyether diol, and an aromatic ring-containing hydroxy fatty acid; the aromatic ring-containing diol and the aromatic ring-containing polyether diol each having The molecular structure shown in formula I:
- the diol or polyether diol may be bisphenol A
- the starting reactant is obtained by etherification of an epoxy oxime with the aid of a catalyst.
- the polyether diol is preferably one or a mixture of two or more of the following polyether diols: a dimer of epoxy oxime, a trimer of epoxy oxime, polyethylene oxide, a polyepoxyfluorene, a polytetrahydrofuran, an epoxy oxime-epoxypropene copolymer; the molecular weight range of the aliphatic polyether diol is
- the aromatic ring-containing hydroxy organic acid has a carbon number of C 8 -C 18
- the component B is composed of component B1, component B2, component B3
- the diol is a starting material and is obtained by etherification of an epoxy oxime hydrocarbon under the action of a catalyst.
- the aliphatic polyether polyol is preferably a polyether tetraol having a molecular structure represented by the formula:
- the polyether tetraol is a reaction product of pentaerythritol as a starting material and is etherified by an epoxy oxime hydrocarbon under the action of a catalyst.
- the isocyanate compound is a carbodiimide-modified diisocyanate, a closed type a dimer or trimer of an isocyanate or a diisocyanate;
- the diisocyanate is One or a mixture of two or more of the following: toluene diisocyanate, diphenylformamidine diisocyanate, m-xylylene diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, 2, 6-Diisocyanate methyl hexanoate, methylcyclohexyl diisocyanate, 2,2,4-trimethylhexyl diisocyanate, isopropylidene bis(cyclohexyl diisocyanate-4
- a silicone diisocyanate or a diphenylformamidine diisocyanate containing a carbodiimide can be polycondensed by itself under the action of an organic phosphine as a catalyst and heating to form a carbodiimide group.
- organophosphine catalysts include pentane heterocyclic phosphine oxide, 1-phenyl-3-methyl-1-phosphinyl oxide, triethyl phosphate, three Phenylphosphine oxide, etc., wherein the pentane heterocyclic phosphine oxide type has the best catalytic effect, low dosage and low reaction temperature; under the action of the catalyst, part of the isocyanate monomer is first converted into a diisocyanate containing a carbodiimide structure, The diisocyanate having a carbodiimide structure can be further cyclized with an isocyanate to form a uretonimine group-containing diisocyanate; the polyisocyanate of the above structure is not only storage-stable, but also convenient to use, and can also impart special materials. Spatial structure and flame retardant effect.
- the carbodiimide in the carbodiimide-modified diisocyanate accounts for 5% to 30% by mass of the modified diisocyanate.
- the blocked isocyanate is formed by blocking the isocyanate with phenol, caprolactam or the like, and can be combined with various polyols to be stable at normal temperature.
- the isocyanate is blocked by reacting an isocyanate or a free isocyanate group-containing prepolymer with some active hydrogen-containing substance or a substance capable of reacting with an isocyanate group, so that the free isocyanate group is not reactive at normal temperature, that is, an isocyanate group is realized.
- the blocking reaction is reversible under certain conditions, so that the blocked isocyanate group can be deblocked under certain conditions to function as an isocyanate group.
- Blocked diisocyanates are a more common type of blocked isocyanates.
- the blocked diisocyanate is toluene diisocyanate, diphenylformamidine diisocyanate, m-xylylene diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, 2,6-diisocyanate hexanoate Ester, methylcyclohexyl diisocyanate, 2,2,4-trimethylhexyl diisocyanate, isopropylidene bis(cyclohexyl diisocyanate-4
- the seal may be: a phenol, an alcohol, a lactam, a dicarbonyl compound, an anthracene, a pyrazole, a sodium hydrogen sulfite; the blocked isocyanate deblocking hydrazine may Use a catalyst.
- the blocked isocyanates of the invention are, in particular, a blocked diisocyanate or a mixture of various blocked diisocyanates of different solution concentrations: butanone oxime blocked toluene diisocyanate, ethanol blocked toluene diisocyanate, caprolactam Blocked toluene isocyanate, butanone oxime blocked hexamethylene diisocyanate, ethanol blocked hexamethylene diisocyanate, caprolactam blocked hexamethylene diisocyanate, carbonic acid adiponitrile, trimethylamine methacrylimide.
- the isocyanate dimer is an aromatic isocyanate dimer, especially a dimer of toluene diisocyanate and a dimer of diphenylformamidine diisocyanate at different solution concentrations.
- Both the aromatic isocyanate and the aliphatic isocyanate can undergo a dimerization reaction and a dimerization reaction in the isocyanate, and the factors affecting the dimerization reaction include the activity of the isocyanate group, the catalyst, the reaction temperature, and the like.
- Commonly used dimerization catalysts include phosphine compounds and tertiary amines.
- the uretidinedione ring formed by the dimerization reaction has poor thermal stability and can be smoothly depolymerized under hot conditions.
- the dimer is often used as a crosslinking agent in the preparation of polyurethane. Since it has higher storage stability at room temperature than the monomer, it can be mixed with other active hydrogen-containing compounds at normal temperature, and in the presence of heat and catalyst. It is then broken down into isocyanate monomers to complete the desired reaction.
- the isocyanate trimer is one or a mixture of two or more of different solution concentrations: toluene diisocyanate trimer, hexamethylene diisocyanate trimer, polyisocyanate I
- the aliphatic isocyanate or the aromatic isocyanate can form a trimer under appropriate conditions to obtain a derivative containing an isocyanurate heterocyclic ring.
- a single isocyanate monomer can be trimerized, and a mixed system of two or more isocyanate monomers can also be subjected to a trimerization reaction.
- the isocyanurate heterocycle formed by the isocyanate trimerization is stable and flame retardant, and the isocyanurate heterocyclic structure is destroyed only at higher temperatures.
- the factors affecting the trimerization reaction include the activity of the isocyanate group, the catalyst, the reaction temperature and the like.
- Isocyanate trimerization catalyst is more suitable for the polymerization of aromatic and aliphatic isocyanate trimerization, including soluble sodium or potassium salt such as sodium octanoate, potassium benzoate, potassium salicylate, sodium phenolate, sodium methoxide, oxalic acid Sodium, etc.; nitrogen-based compound and organometallic compound, in order to control the content of trimer and prevent the formation of multimer, by controlling the temperature of the reaction system and adding a polymerization inhibitor at the appropriate stage of the reaction The reaction is terminated.
- polymerization inhibitors are benzoyl chloride, phosphoric acid, p-toluenesulfonate, dimethyl sulfate, and the like.
- Isocyanate trimer containing an isocyanurate ring structure which has the advantages of low volatility, low toxicity, high functionality, etc.
- the isocyanurate heterocyclic structure imparts temperature resistance, flame retardancy and chemical resistance to the material. .
- the above-mentioned isocyanate-containing functional group substances can be formulated into solutions of different concentrations before use, and the purpose of the addition and mixing process is easy to operate and the dispersion distribution is uniform.
- Commonly used solvents are toluene, petroleum ethers of various boiling points, etc., and the concentration range of the solvent added in the above solution is related to the viscosity of the isocyanate-containing substance, and the solution concentration range is preferably in the range of 15% to 95% by weight.
- the isocyanurate cyclic polyol, isocyanurate cyclic polyether polyol in the composition has a molecule represented by formula m
- isocyanurate ring polyol and isocyanurate ring polyether polyol can be obtained by the following method: isocyanurate (synthesis method as above) as initiator, to three
- the boron fluoride ether complex is a catalyst, and the epoxy compound is a ring unit, and an isocyanurate ring polyol or an isocyanurate ring polyether polyol can be obtained by a cationic ring opening reaction.
- carbodiimide compounds are monomeric carbodiimides or polymeric carbodiimides of different solution concentrations, and the number of carbodiimide groups in the molecular structure is 1-30 , molecular weight 40-30000g/mol It may also be composed of two or more kinds of substances having different molecular weights and carbodiimide group contents having the above characteristics, and the ratio is not limited.
- a more mature method for preparing carbodiimide or a polymer thereof is now produced by heating an isocyanate under the action of a catalyst.
- a high molecular weight polycarbodiimide solution or powder is finally obtained, and has good storage stability.
- the diisocyanate forms a linear polycarbodiimide
- the trifunctional or higher isocyanate forms a polycarbodiimide having a branched structure, and such a polycondensate has a high melting temperature.
- Polycarbodiimide has good heat resistance, high activity, and can react with many substances, and has wide application value.
- the use of carbodiimide in biodegradable polyesters can also effectively regulate the degradation cycle of materials.
- thermoplastic polyester in the prior art is a polymer obtained by a polycondensation reaction of a glycol and a dibasic acid.
- a variety of polyesters having different characteristics can be synthesized via different kinds of dibasic acids and glycols.
- the main commercial varieties are: polybutylene terephthalate, polyethylene terephthalate, poly-terephthalic acid-1,4-cyclohexane dimethyl ester, polynaphthalene dicarboxylate Glycol esters and polyester liquid crystal polymer series, polyarylate, polyester elastomer, and the like.
- polyester production has two types of batch production processes and continuous production processes.
- the chemical process of polyester synthesis basically passes through the esterification reaction stage, the transesterification reaction stage, and the polycondensation reaction stage. According to the type of polyester and the synthetic control method, the equipment configuration and process requirements of each stage exist separately. Features.
- the biodegradable polyester of the present invention is a thermoplastic polyester, and the preparation method thereof comprises an esterification reaction stage, an ester exchange reaction stage, and a polycondensation reaction stage, and the component B
- esterification reaction also referred to as transesterification reaction
- polycondensation reaction or after the polycondensation reaction, Can be added during post-processing; component B
- the divided additions can be added in stages before or after different reaction stages or in any reaction stage before or after any reaction stage or in any reaction stage. Join in several parts. The choice of splitting between different turns has no effect on the final degradation properties of the material.
- Component B can be selected according to specific needs. The way to join to obtain biodegradable polyesters with different application characteristics.
- the post-processing process such as mechanical mixing processing, single-screw processing, or twin-screw processing or other existing processing methods, the process conditions of the preparation method of the present invention can refer to the prior art, as a preferred embodiment of the esterification in the preparation method of the present invention.
- the transesterification reaction stage temperature range is 150-240
- °C can be carried out under normal pressure, and the polycondensation reaction stage can be carried out under reduced pressure conditions and in the range of 160-250 °C.
- the principle of the preparation method of the present invention is to obtain a polyester material by a polycondensation reaction, which is also a relatively mature control process, basically consisting of A
- the components are composed of three processes: an esterification reaction stage, a transesterification reaction stage, and a polycondensation reaction stage.
- the advantage of the preparation method of the invention is that component B
- Preparation of biodegradable polyester by polycondensation can be catalyzed by adding an appropriate amount of catalyst during the reaction, including catalysts based on the elements Ti, Ge, La Ce, Zn, Fe, Mn, Co, V, Zr. , Li, Ca
- organometallic mixtures of these elements such as the organic acid salts, oxime salts and acetylacetonates of these elements.
- the catalyst should be added to the crucible to avoid deactivation.
- a stabilizer may be added during the reaction.
- stabilizers include: tridecyl phosphite, triphenyl phosphite, triphenyl phosphonate, tridecyl phosphonate Avoid using phosphoric acid and phosphorous acid to prevent a negative effect on the catalyst.
- the content of the catalyst added to the biodegradable polyester of the present invention is 0.01%. Parts by weight to 3
- the catalyst is added in an amount to be controlled in the order of one part per million by weight.
- a catalyst is added.
- the catalyst may be added to a solution of a certain concentration, or a different element-based catalyst may be added to the reactants in a certain compatibility.
- the biodegradable polyester of the present invention can be used in the fields of plastic processing such as injection molding, blow molding, plastic molding, casting, drawing, etc., and can be operated on conventional processing equipment, and can also be used with other degradable plastics or plants. Blending of materials such as polylactic acid, polycaprolactone, polyglycolic acid, succinic acid/
- Butylene glycol copolyester, starch, cellulose, plant fiber, plant powder, etc. can also be blended with ordinary plastics to make structural materials, sheets, films, foams and frame materials for the packaging industry. , consumable materials for the transportation industry, catering industry, agriculture and animal husbandry and other industries.
- the initial form of the biodegradable polyester prepared by the present invention is a material that is not limited by shape and size.
- the biodegradable polyester prepared by the present invention can be used to prepare a coated film, or can be applied by a process such as roll coating (rotary molding), doctor coating (brushing), spraying, or film injection.
- a process such as roll coating (rotary molding), doctor coating (brushing), spraying, or film injection.
- the use of biodegradable polyesters in such materials is not limited by the size or thickness of the carrier.
- Such products include paper, fiber or starch coated products.
- the biodegradable polyester prepared by the present invention can be subjected to spinning by a corresponding conventional spinning process to obtain different appearance characteristics.
- Such spinning can be processed in a conventional manner such as stretching, twisting, roughing, winding, oiling, simmering, etc., and a spinning product that satisfies the requirements for subsequent processing or use has been obtained.
- the spinning can be further processed into fibers on a conventional processing equipment, and then woven into a cloth or processed into a product having a certain width, and the spinning can also be made into a silk or wire product having a certain shape or function without being woven.
- the biodegradable polyester of the present invention may be added to the filler in a proportion of from 0 to 85% by weight based on the weight of the biodegradable polyester base.
- These fillers may be one or a mixture of two or more of the following: carbon black, white carbon black, starch, modified starch, wood flour, plant fiber, various hemp, cellulose fiber, modified cellulose, silica fume Stone, various whiskers, iron oxides, natural mineral fillers, synthetic mineral fillers, calcium carbonate, calcium sulfate, barium sulfate, titanium dioxide, stabilizers, organophosphine compounds or derivatives thereof, antioxidants, secondary amines Compounds, UV stabilizers, lubricants, mold release agents, nucleating agents, organic pigments, inorganic pigments, organic toners, inorganic toners.
- Lubricants and mold release agents include aliphatic alcohols, salts of organic acids such as calcium stearate or zinc stearate, mineral waxes, vegetable waxes, animal waxes.
- the above filler may also be added to the biodegradable polyester in the form of a masterbatch.
- the addition process can be added during the thermal processing of the biodegradable polyester, such as a single-screw extrusion process, a twin-screw extrusion process, to obtain a particle size range of 2 mm.
- the above pellets are used for secondary molding. It can also be mixed into biodegradable polyester resin materials during physical mixing as needed, and used directly for overmolding.
- the biodegradable polyester of the present invention can be prepared into a product having adhesive properties by a conventional method.
- Biodegradable The polyester can be prepared by a conventional adhesive preparation process under the aid of a tackifier such as a natural resin, and an adhesive having biodegradability can be prepared.
- Solvent-free adhesive products such as hot melt adhesives can also be prepared by conventional processes.
- the biodegradable polyester of the present invention can be prepared by a conventional method, the bulk density of the foam is 0.15-1. lg / cm 3
- a typical foam processing equipment consists of a single screw extruder, a liquid or gas foaming agent injection assembly, a forming die and ancillary equipment.
- the length to diameter ratio of the extruder is 30:1.
- Another conventional foam processing equipment consists of two sets of screw extrusion systems. Since the rear screw size can be changed as needed, this equipment can process larger sizes of foam. These two types of processing equipment have little difference in processing methods and can produce biodegradable polyester foam. Biodegradable polyesters and other fillers and auxiliaries are added from the feed port of a single screw extruder. The blowing agent is injected into the screw conveying section of the single screw extruder via the injection system, and the amount added is about 0.1%-20%, preferably 0.1-5, of the weight of the biodegradable polyester.
- the blowing agent includes one or a mixture of two or more of the following: an inert gas such as nitrogen, carbon dioxide; and a boiling point of -40. C to 50.
- Organic matter such as propylene, butyl hydrazine, amylose, diethyl ether; reactive blowing agents such as sodium bicarbonate, a mixture of sodium bicarbonate and citric acid, azo compounds.
- the blowing agent is dispersed into the biodegradable polyester melt in the screw extruder, the mixed melt is extruded from the die, and after being expanded, formed, and cooled, the biodegradable polyester foam is collected through the auxiliary processing system. Profile.
- the biodegradable polyester of the present invention is a component of an aliphatic polyester, a fatty acid /
- the polyester material obtained by introducing a phenyl group-containing diol and/or a polyol component into the composition of the aromatic acid copolyester can not only impart biodegradability to the polyester material, but also change the softness and hardness of the polyester material.
- the material can provide certain self-adhesive characteristics and certain membrane opening properties in order to meet the requirements of certain applications, such as plastic wrap and self-sealing film. , patches, adhesives, coatings, etc.
- the biodegradable polyester material of the present invention can overcome the disadvantages in the prior art products, and the polyester material of the present invention can be used to process into a film material, which greatly changes the characteristics of the adhesive roll during processing, and the appearance quality is further improved. Good; after the heat resistance is improved, the novel polyester material can also be applied to a process having a long cycle time, such as an injection molding process, and the biodegradable aliphatic/aromatic polyester material provided by the present invention is provided. Excellent mechanical properties.
- the intrinsic viscosity of the sample is measured by an Ubbelohde viscometer, and the sample concentration is 0.005 g/mL.
- the melting temperature of the sample test sample, the nitrogen flow rate is 20 mIJmin, and the heating rate is 10 °C / min.
- Nissin textile strain accounting production solid content 40%, pH 9 ⁇ 11, viscosity (20 °C) 5 ⁇ 50mPa.s.
- the carbodiimide equivalent is 445;
- the reaction was carried out at ° C for 4 hours.
- reaction vessel added to the reaction vessel, heated to 170 ° C under nitrogen, and added n-butyl titanate 350g The temperature in the reaction vessel was maintained at 190 ° C. After 4 hours of reaction, 210 kg of adipic acid was added and reacted at 200 ° C for 4 hours.
- the 90-day degradation rate is calculated as 79% of carbon dioxide emissions.
- the reaction was carried out at ° C for 4 hours.
- the temperature is raised to 220 °C to maintain a low vacuum (about 80KPa) for 40min.
- the temperature is raised to 220 °C to maintain a low vacuum (about 120Kpa) for 40min.
- n-butyl titanate was added, and the reaction was carried out for 30 minutes, and the temperature was slowly raised to 235 ° C to bring the pressure in the autoclave to reach
- the biodegradable polyester prepared in this example contains no component B.
- the day degradation rate was calculated as 77 % based on the amount of carbon dioxide released.
- a small sputum a product with a slightly lower molecular weight.
- the 90-day degradation rate is calculated as the amount of carbon dioxide released.
- Petroleum ether solution 0.5g, 16g of PTZE was added to the flask, heated to 170 °C under nitrogen, and 0.2 g of n-butyl titanate was added to maintain the temperature in the reactor at 200 °C.
- n-butyl titanate was added, and the reaction was carried out for 30 minutes, and the temperature was slowly raised to 235 ° C to bring the pressure in the autoclave to 15 - 5 KPa o. The temperature was kept constant, and the pressure in the autoclave was lowered to 100 Pa or less.
- a small cockroach that is, a product.
- the 90-day degradation rate is calculated as 89% of carbon dioxide emissions.
- the mixture was placed in a reaction vessel, heated to 185 ° C under nitrogen atmosphere, and 319 g of n-butyl titanate was added thereto, and the temperature in the reaction vessel was maintained at 190 ° C for 4 hours.
- Dimethyl succinate and 1000 g of pyromellitic anhydride were added to the reaction vessel, and the temperature was raised to 180 ° C under nitrogen atmosphere. 450 g of n-butyl titanate was added to maintain the temperature in the reactor at 200 ° C. After the small mash, 2 kg of tris(2-hydroxyethyl) isocyanurate was added.
- n-butyl titanate was added, and the reaction was carried out for 30 minutes, and the temperature was gradually raised to 235 ° C to bring the pressure in the autoclave to 5-3 KPa. The temperature was kept constant, and the pressure in the autoclave was lowered to below 100 Pa.
- a small cockroach that is, a product.
- the 90-day degradation rate is 85% based on the amount of carbon dioxide released.
- the 90-day degradation rate is calculated as 72% of carbon dioxide emissions.
- the reaction was carried out at ° C for 4 hours.
- the reaction was carried out at ° C for 4 hours.
- reaction 4 adding 30g of n-butyl titanate, maintaining the temperature inside the reactor at 180 °C, reaction 4
- reaction 4 adding 30g of n-butyl titanate, maintaining the temperature inside the reactor at 180 °C, reaction 4
- the mixture was placed in a four-necked flask, heated to 170 ° C under nitrogen atmosphere, and 0.07 g of n-butyl titanate was added thereto, and the temperature in the reaction vessel was maintained at 210 ° C for 4 hours.
- the 90-day degradation rate is calculated as 30% of carbon dioxide emissions.
- the 90-day degradation rate is calculated as 42% of carbon dioxide emissions.
- N-butyl titanate was added to a four-necked flask, and the temperature was raised to 200 ° C under a nitrogen atmosphere for 2 hours.
- the pressure is 10KPa. Keep the temperature constant, reduce the pressure inside the reactor to below lOOPa, and react for 3 hours.
- the 90-day degradation rate was calculated as 21% based on the amount of carbon dioxide released.
- N-butyl titanate was added to a four-necked flask, and the temperature was raised to 205 ° C under nitrogen atmosphere for 2 hours. Then add 78.8g dimethyl terephthalate, butyl diol 126g, ethylene glycol 6.2g, 205
- the °C reaction ends with two small amounts of methanol.
- the pressure is 10KPa. Keep the temperature constant, reduce the pressure inside the reactor to below lOOPa, and react for 3 hours.
- the 90-day degradation rate was calculated to be 65% based on the amount of carbon dioxide released.
- the biodegradable polyester obtained by the present invention has obvious biodegradation characteristics, and the process is highly operable and excellent in product performance. It can also be seen from the comparison with the comparison ratio, when A12
- the dibasic acid in the component is added to the synthetic system in a relatively high proportion. Although a biodegradable polyester which satisfies the molecular weight requirement and the viscosity requirement can be obtained, the biodegradability of the polyester is negatively affected.
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- Materials Engineering (AREA)
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- General Chemical & Material Sciences (AREA)
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Description
Claims
Priority Applications (7)
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JP2011512816A JP5836121B2 (ja) | 2009-05-15 | 2009-05-15 | 生分解性ポリエステル、及びその調製方法 |
KR1020107015103A KR101129932B1 (ko) | 2009-05-15 | 2009-05-15 | 생분해성 폴리에스테르류 및 그 제조방법 |
US12/744,278 US8557945B2 (en) | 2009-05-15 | 2009-05-15 | Kind of biodegradable polyester and its preparation method |
ES09841276T ES2791049T3 (es) | 2009-05-15 | 2009-05-15 | Poliésteres biodegradables y método de preparación de los mismos |
EP09841276.0A EP2348063B1 (en) | 2009-05-15 | 2009-05-15 | Biodegradable polyesters and preparing method thereof |
AU2009332928A AU2009332928B2 (en) | 2009-05-15 | 2009-05-15 | A kind of biodegradable polyester and its preparation method |
PCT/CN2009/071805 WO2010130098A1 (zh) | 2009-05-15 | 2009-05-15 | 一种生物降解聚酯及其制备方法 |
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EP (1) | EP2348063B1 (zh) |
JP (1) | JP5836121B2 (zh) |
KR (1) | KR101129932B1 (zh) |
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WO2023118407A1 (en) * | 2021-12-24 | 2023-06-29 | Avantium Knowledge Centre B.V. | Process for the production of polyester (co)polymers |
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EP2348063B1 (en) | 2020-04-29 |
ES2791049T3 (es) | 2020-10-30 |
AU2009332928B2 (en) | 2013-05-09 |
US20110190468A1 (en) | 2011-08-04 |
KR101129932B1 (ko) | 2012-03-23 |
EP2348063A4 (en) | 2014-10-15 |
EP2348063A1 (en) | 2011-07-27 |
AU2009332928A1 (en) | 2010-12-02 |
JP5836121B2 (ja) | 2015-12-24 |
KR20110009074A (ko) | 2011-01-27 |
US8557945B2 (en) | 2013-10-15 |
JP2011518941A (ja) | 2011-06-30 |
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