CN104327242A - Preparation method and application of low-temperature-resistant oil-resistant polyurethane composite material for oil sand conveying - Google Patents
Preparation method and application of low-temperature-resistant oil-resistant polyurethane composite material for oil sand conveying Download PDFInfo
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- CN104327242A CN104327242A CN201410533467.2A CN201410533467A CN104327242A CN 104327242 A CN104327242 A CN 104327242A CN 201410533467 A CN201410533467 A CN 201410533467A CN 104327242 A CN104327242 A CN 104327242A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08G18/28—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
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/4808—Mixtures of two or more polyetherdiols
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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
- 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
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08G18/28—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
- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6685—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7678—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing condensed aromatic rings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/309—Sulfur containing acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08K2201/00—Specific properties of additives
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- C08K2201/003—Additives being defined by their diameter
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Abstract
The invention discloses a preparation method of a low-temperature-resistant oil-resistant polyurethane composite material for oil sand conveying. The polyurethane steel plastic composite material comprises the components according to the mass fraction: 48%-57% of polytetrahydrofuran glycol, 10%-16% of polyoxypropylene glycol, 10%-12% of toluene diisocyanate, 6-8% of 1,5-naphthalene diisocyanate, 9%-11% of 4,4'-methylenebis(2-chloroaniline), and 5%-6% of molybdenum disulfide. Rubber is obtained through mixing under a certain temperature and a certain stirring speed, and the rubber is subjected to centrifugal casting to obtain a steel plastic composite pipe. The low-temperature-resistant oil-resistant polyurethane composite material has the advantages of high wear resistance, good resilience, good heat resistance, high tensile strength, prominent hydrolysis resistance, good bonding with metals, good vibration resistance and good outdoor weatherability.
Description
Technical field
The present invention relates to a kind of Material Field, be specifically related to a kind of preparation method and application of oil-sand conveying low temperature resistant oil proof compound polyurethane material.
Background technology
Along with oil-sand refines crude oil the progress of technology, the project of oil-sand recover petroleum gets more and more, but owing to causing very large impact to environment in oil-sand exploitation particularly strip mining transformation and transportation, so being applied in order to inevitable of pipeline transportation in oil-sand recovery process.Simultaneously due in the world 85% oil-sand store and concentrate on Transport Model for Alberta province northern territory, this area is all that thus low temperature environment has strict requirement to wear-resisting, the oil resistant under the low temperature of pipeline and mechanical property throughout the year.Current domestic pipeline conveying pipe material selecting is of a great variety, has hard multiple-unit tube (comprising cast stone, pottery, carborundum composite pipe and bimetal tube), soft multiple-unit tube (comprise steel rubber, steel is moulded, steel urethane, superhigh molecular polyethylene compound pipe), simple substance pipe (comprising common steel tube, bainite steel pipe, Steel Tube Special, ultrahigh molecular weight polyethylene(UHMWPE) and other plastics naked pipes) etc.But certain defect intrinsic due to product or deficiency, as glass-ceramic tubre, vitrified pipe, the pipe fitting such as Heavy Weight installation and maintenance inconvenience, elbow of carborudum tube is not shock-resistant easily to come off, the not same existence of pipeline quality obvious weak link when being welded to connect; The low temperature fastness to wear of steel rubber pipe shows slightly not enough, the poor fault that bulge, de-trousers easily occur of anti-pressure ability; Superhigh molecular weight polyethylene pipe, as the New Kind of Anti-Abrasion pipeline material generally adopted in the world, there has also been the history of several years in the research of China, exploitation, production.Current domestic ultrahigh molecular weight polyethylene steel-plastic pipe is due to the immature property of technology, be difficult to the ultrahigh molecular weight polyethylene(UHMWPE) produced truly, when using in ruthless area, and fail to adapt to its special operation condition condition and climatic characteristic, in fastness to wear and thermal expansion stress, generally also there is no small problem.
Summary of the invention
The wear resisting property that the object of the invention is to overcome conventional high-abrasive material is low, provides that a kind of high-wearing feature, rebound resilience are good, good heat resistance, tensile strength are high, hydrolytic resistance is given prominence to, vibration resistance good with metal sticking and the good oil-sand conveying low temperature resistant oil proof compound polyurethane material of outdoor weatherability.
The present invention is achieved through the following technical solutions: a kind of preparation method of oil-sand conveying low temperature resistant oil proof compound polyurethane material, polytetrahydrofuran diol 48% ~ 57%, polyoxypropyleneglycol 10% ~ 16%, tolylene diisocyanate 10% ~ 12%, 1, the adjacent chlorodiphenyl amine methane 9% ~ 11% of 5-naphthalene diisocyanate 6% ~ 8%, two, molybdenumdisulphide 5% ~ 6%, preparation method comprises the following steps:
A, employing ultrasonic assistant mixing equipment, add in reactor after in proportion polytetrahydrofuran diol, polyoxypropyleneglycol and molybdenumdisulphide being mixed, start agitator, the while that setting speed being 45 revs/min, the temperature in reactor is risen to 100 DEG C, starting to be evacuated down to negative pressure is that 0.1MPa keeps 30 minutes, and relief reactor temperature drops to about 45 DEG C;
B, maintain the temperature at about 45 DEG C, continue to stir, then slowly in reactor, 1 is added, 5-naphthalene diisocyanate and toluene diisocyanate mixture, stop heating, because this reaction is thermopositive reaction, in reaction process, keep temperature of reaction at about 80 DEG C reaction 2h, then stop heating until temperature is down to less than 50 DEG C stop stirring;
Keep reactor airtight under C, room temperature, material is left standstill more than 24 hours, and post-heating is to reactor temperature to 90 DEG C, and starting to be evacuated down to negative pressure is that 0.1MPa keeps 2 hours;
D, two adjacent chlorodiphenyl amine heat methane are melted after pour into polyurethane casting machine B fill with in constant temperature preserve, in being filled with by the performed polymer suction casting molding machine A in reactor, constant temperature sealing preservation obtains polyurethane steel plastic composite materials simultaneously.
Further improvement of the present invention is: the molecular weight of described polytetrahydrofuran diol is 800 ~ 1000, and the molecular weight of described polyoxypropyleneglycol is 1000, and the purity of tolylene diisocyanate is 80% ~ 100%, and the granular size of molybdenumdisulphide is 325 ~ 600 orders.
The application of compound polyurethane material in steel pipe that the preparation method of oil-sand conveying low temperature resistant oil proof compound polyurethane material is made, by starting polyurethane casting machine, cast head is opened by after proportioning and consumption adjustment parameter, polyurethane material cast is entered in steel pipe, start centrifugal casting machine, keep rotating speed at 200 ~ 400 revs/min, temperature controls, at 85 DEG C of constant temperature casting 1h, then goods to be put into sulfuration 8 hours obtained low temperature resistant oil proof polyurethane steel plastic composites at 100 DEG C, sulfuration storehouse.
Compared with prior art, the present invention has the following advantages: make it be uniformly dispersed in the material with wear resistant filler molybdenumdisulphide by ultrasonic wave hybrid technology, link work at selected spots with that in entire areas, effectively improve high, the vibration resistance good with metal sticking of the mechanical property of rubber, resistance to low temperature, wear resistance and oil resistance and outdoor weatherability good, be applicable to the aspect such as liner, high-pressure sealing ring, Shockproof rubber of automotive industry, steel-plastics composite pipe, the steel-plastics composite pipe made is a kind of steel-plastics composite pipe being suitable for oil-sand conveying.
embodiment:
Below by way of specific embodiment, the present invention is described, but the present invention is not merely defined in these embodiments.Unless otherwise defined or described herein, all professional scientific words used herein and those skilled in the art the same meaning be familiar with.
A kind of preparation method of oil-sand conveying low temperature resistant oil proof compound polyurethane material, described polyurethane steel plastic composite materials comprises by massfraction composition: polytetrahydrofuran diol 48% ~ 57%(molecular weight is 800 ~ 1000), polyoxypropyleneglycol 10% ~ 16%(molecular weight is 1000), tolylene diisocyanate 10% ~ 12%(purity is 80% ~ 100%), 1, the adjacent chlorodiphenyl amine methane 9% ~ 11% of 5-naphthalene diisocyanate 6% ~ 8%, two, molybdenumdisulphide (granular size 325 order) 5% ~ 6%, preparation method comprises the following steps:
A, employing ultrasonic assistant mixing equipment, add in reactor after in proportion polytetrahydrofuran diol, polyoxypropyleneglycol and molybdenumdisulphide being mixed, start agitator, the while that setting speed being 45 revs/min, the temperature in reactor is risen to 100 DEG C, starting to be evacuated down to negative pressure is that 0.1MPa keeps 30 minutes, and relief reactor temperature drops to about 45 DEG C;
B, maintain the temperature at about 45 DEG C, continue to stir, then slowly in reactor, 1 is added, 5-naphthalene diisocyanate and toluene diisocyanate mixture, stop heating, because this reaction is thermopositive reaction, in reaction process, keep temperature of reaction at about 80 DEG C reaction 2h, then stop heating until temperature is down to less than 50 DEG C stop stirring;
Keep reactor airtight under C, room temperature, material is left standstill more than 24 hours, and post-heating is to reactor temperature to 90 DEG C, and starting to be evacuated down to negative pressure is that 0.1MPa keeps 2 hours;
D, two adjacent chlorodiphenyl amine heat methane are melted after pour into polyurethane casting machine B fill with in constant temperature preserve, in being filled with by the performed polymer suction casting molding machine A in reactor, constant temperature sealing preservation obtains polyurethane steel plastic composite materials simultaneously.
Adopt the application of compound polyurethane material in steel pipe that the preparation method of oil-sand conveying low temperature resistant oil proof compound polyurethane material is made, by starting polyurethane casting machine, cast head is opened by after proportioning and consumption adjustment parameter, polyurethane material cast is entered in steel pipe, start centrifugal casting machine, keep rotating speed at 200 ~ 400 revs/min, temperature controls, at 85 DEG C of constant temperature casting 1h, then goods to be put into sulfuration 8 hours obtained low temperature resistant oil proof polyurethane steel plastic composites at 100 DEG C, sulfuration storehouse.
Embodiment 1:
By being heated to 100 DEG C in vacuum pump suction reactor and being cooled to 45 DEG C after vacuumizing the 30min that dewaters under being stirred in negative pressure 0.1MPa after 40KG molybdenumdisulphide is mixed by ultrasonic assistant mixing equipment with 300KG polytetrahydrofuran diol and 100KG polyoxypropyleneglycol, then 70KG tolylene diisocyanate and 50KG1 is added, 5-naphthalene diisocyanate, stir and start reaction and control temperature of reaction simultaneously under about 85 DEG C, question response temperature stops stirring after being down to room temperature, and reheat after keeping reactor sealing and standing 24h be warming up to 90 DEG C stir and vacuumize under negative pressure 0.1MPa dehydration 2h after will in still Raw suction casting molding machine A tank sealing keep material temperature at 80 DEG C, then constant temperature 115 DEG C preservation in casting molding machine B tank is poured into after being melted by two adjacent chlorodiphenyl amine heat methane.Start to pour into a mould in steel pipe after setting casting molding machine parameter according to two adjacent chlorodiphenyl amine methane and performed polymer mass ratio 10:1.2.The steel pipe adding polyurethane material is put into 100 DEG C, sulfuration storehouse sulfuration 8h at 70 DEG C after rotational casting 1h obtains finished product.
Embodiment 2:
By being heated to 100 DEG C in vacuum pump suction reactor and being cooled to 45 DEG C after vacuumizing the 30min that dewaters under being stirred in negative pressure 0.1MPa after 30KG molybdenumdisulphide is mixed by ultrasonic assistant mixing equipment with 320KG polytetrahydrofuran diol and 80KG polyoxypropyleneglycol, then 70KG tolylene diisocyanate and 40KG1 is added, 5-naphthalene diisocyanate, stir and start reaction and control temperature of reaction simultaneously under about 85 DEG C, question response temperature stops stirring after being down to room temperature, and reheat after keeping reactor sealing and standing 24h be warming up to 90 DEG C stir and vacuumize under negative pressure 0.1MPa dehydration 2h after will in still Raw suction casting molding machine A tank sealing keep material temperature at 80 DEG C, then constant temperature 115 DEG C preservation in casting molding machine B tank is poured into after being melted by two adjacent chlorodiphenyl amine heat methane.Start to pour into a mould in steel pipe after setting casting molding machine parameter according to two adjacent chlorodiphenyl amine methane and performed polymer mass ratio 10:1.The steel pipe adding polyurethane material is put into 100 DEG C, sulfuration storehouse sulfuration 8h at 80 DEG C after rotational casting 1h obtains finished product.
The major advantage of this multiple-unit tube rubber used is: high-wearing feature, rebound resilience are good, lower temperature resistance is good, tensile strength is high, oil-proofness is outstanding, with good, the vibration resistance of metal sticking and outdoor weatherability good.Urethanes is of many uses, can be used for the aspect such as liner, high-pressure sealing ring, Shockproof rubber of automotive industry, steel-plastics composite pipe.Rotational casting in mould is poured into after generally polyethers or polyester polyol, isocyanic ester, anti-aging agent and chainextender etc. being mixed at certain temperature and stirring velocity by a step or two step method during production, the low temperature resistant oil proof polyurethane steel plastic composite of preparation makes it be uniformly dispersed in the material with wear resistant filler molybdenumdisulphide by ultrasonic wave hybrid technology, link work at selected spots with that in entire areas, effectively improve the mechanical property of rubber, resistance to low temperature, wear resistance and oil resistance, is a kind of steel-plastics composite pipe being suitable for oil-sand conveying.
Claims (3)
1. an oil-sand carries the preparation method using low temperature resistant oil proof compound polyurethane material, it is characterized in that: described polyurethane steel plastic composite materials comprises by massfraction composition: polytetrahydrofuran diol 48% ~ 57%, polyoxypropyleneglycol 10% ~ 16%, tolylene diisocyanate 10% ~ 12%, 1, the adjacent chlorodiphenyl amine methane 9% ~ 11% of 5-naphthalene diisocyanate 6% ~ 8%, two, molybdenumdisulphide 5% ~ 6%, preparation method comprises the following steps:
A, employing ultrasonic assistant mixing equipment, add in reactor after in proportion polytetrahydrofuran diol, polyoxypropyleneglycol and molybdenumdisulphide being mixed, start agitator, the while that setting speed being 45 revs/min, the temperature in reactor is risen to 100 DEG C, starting to be evacuated down to negative pressure is that 0.1MPa keeps 30 minutes, and relief reactor temperature drops to about 45 DEG C;
B, maintain the temperature at about 45 DEG C, continue to stir, then slowly in reactor, 1 is added, 5-naphthalene diisocyanate and toluene diisocyanate mixture, stop heating, because this reaction is thermopositive reaction, in reaction process, keep temperature of reaction at about 80 DEG C reaction 2h, then stop heating until temperature is down to less than 50 DEG C stop stirring;
Keep reactor airtight under C, room temperature, material is left standstill more than 24 hours, and post-heating is to reactor temperature to 90 DEG C, and starting to be evacuated down to negative pressure is that 0.1MPa keeps 2 hours;
D, two adjacent chlorodiphenyl amine heat methane are melted after pour into polyurethane casting machine B fill with in constant temperature preserve, in being filled with by the performed polymer suction casting molding machine A in reactor, constant temperature sealing preservation obtains polyurethane steel plastic composite materials simultaneously.
2. oil-sand carries the preparation method with low temperature resistant oil proof compound polyurethane material according to claim 1, it is characterized in that: the molecular weight of described polytetrahydrofuran diol is 800 ~ 1000, the molecular weight of described polyoxypropyleneglycol is 1000, the purity of described tolylene diisocyanate is 80% ~ 100%, and the granular size of described molybdenumdisulphide is 325 orders.
3. the application of compound polyurethane material in steel pipe that the preparation method of oil-sand conveying low temperature resistant oil proof compound polyurethane material is made according to claim 1, by starting polyurethane casting machine, cast head is opened by after proportioning and consumption adjustment parameter, polyurethane material cast is entered in steel pipe, start centrifugal casting machine, keep rotating speed at 200 ~ 400 revs/min, temperature controls, at 85 DEG C of constant temperature casting 1h, then goods to be put into sulfuration 8 hours obtained low temperature resistant oil proof polyurethane steel plastic composites at 100 DEG C, sulfuration storehouse.
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| CN201410533467.2A CN104327242A (en) | 2014-10-11 | 2014-10-11 | Preparation method and application of low-temperature-resistant oil-resistant polyurethane composite material for oil sand conveying |
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| CN201410533467.2A CN104327242A (en) | 2014-10-11 | 2014-10-11 | Preparation method and application of low-temperature-resistant oil-resistant polyurethane composite material for oil sand conveying |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196068A (en) * | 1995-09-15 | 1998-10-14 | 巴斯福股份公司 | Method of preparing compact or cellular polyurethane elastomers and isocyanate prepolymers suitable therefor |
| US6852823B2 (en) * | 2002-08-09 | 2005-02-08 | E. I. Du Pont De Nemours And Company | Polyurethane and polyurethane-urea elastomers from polytrimethylene ether glycol |
| CN102153944A (en) * | 2011-03-07 | 2011-08-17 | 刘文明 | Solvent-free polyurethane elastomeric coating with self-lubricating effect |
| CN102786652A (en) * | 2012-08-24 | 2012-11-21 | 奥斯汀新材料（张家港）有限公司 | Preparation method of thermoplastic polyurethane elastomer |
-
2014
- 2014-10-11 CN CN201410533467.2A patent/CN104327242A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196068A (en) * | 1995-09-15 | 1998-10-14 | 巴斯福股份公司 | Method of preparing compact or cellular polyurethane elastomers and isocyanate prepolymers suitable therefor |
| US6852823B2 (en) * | 2002-08-09 | 2005-02-08 | E. I. Du Pont De Nemours And Company | Polyurethane and polyurethane-urea elastomers from polytrimethylene ether glycol |
| CN102153944A (en) * | 2011-03-07 | 2011-08-17 | 刘文明 | Solvent-free polyurethane elastomeric coating with self-lubricating effect |
| CN102786652A (en) * | 2012-08-24 | 2012-11-21 | 奥斯汀新材料（张家港）有限公司 | Preparation method of thermoplastic polyurethane elastomer |
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