CN1233671C - Catalyt and its component for polymerization of ethylene - Google Patents
Catalyt and its component for polymerization of ethylene Download PDFInfo
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- CN1233671C CN1233671C CN 03119633 CN03119633A CN1233671C CN 1233671 C CN1233671 C CN 1233671C CN 03119633 CN03119633 CN 03119633 CN 03119633 A CN03119633 A CN 03119633A CN 1233671 C CN1233671 C CN 1233671C
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Abstract
The present invention provides a catalyst component used for the polymerization or copolymerization of ethylene and a catalyst containing the catalyst component, which comprises at least one magnesium halide, at least one organic alcoholic compound, at least one organic metal aluminum compound and at least one reaction product of a titanium compound. The catalyst has favorable hydrogen regulation performance and copolymerization performance when used for the polymerization or copolymerization of ethylene, low cost and simple compound technologies, is favorable to industrialized application, and is particularly suitable to be used for preparing ethylene polymers with wide molecular weight distribution, or even ethylene polymers with bimodal distribution.
Description
Technical field
The present invention relates to a kind ofly be used for the particularly catalyst component of vinyl polymerization or copolymerization of alkene, and the preparation method of this catalyst component and catalyzer thereof.
Technical background
Along with the polyethylene production industrial expansion, the polyvinyl production of high performance has become the emphasis that people pay close attention to.In order to produce the polyvinyl resin of the different trades mark, realize the high performance of polyvinyl resin, in the practical application in industry of catalyzer, the requirement of the hydrogen response of catalyzer is become more and more important.It requires catalyzer when having higher catalytic activity, also should have better hydrogen regulation sensitivity, promptly can obtain the resin of different melting index at an easy rate by the adjusting of hydrogen add-on in polymerization process.At present, in bimodal (or broad peak) molecular weight distribution polyvinyl resin synthetic, commonly adopt double-reactor series connection polymerization technique, mainly be by regulating density of hydrogen and polymerizing condition in two reactors, make the polyethylene that in different reactor, generates have different molecular weight, thereby realize that the bimodal distribution of final polymer molecular weight or broad peak distribute.Particularly when the low molecular weight part of synthetic polymer, not only require catalyzer under high hydrogen concentration, can obtain polymkeric substance, but also require catalyzer still will keep advantages of high catalytic activity than high fusion index.
Conventional Ziegler-Natta catalyst is when density of hydrogen higher (in first reactor), and the catalytic activity decay is bigger, therefore causes its active on the low side in second reactor, is difficult to the industrialized production of adaptation.Therefore, the catalyzer that is applicable to this placed in-line staged reactor polymerization technique not only requires to have higher ethylene homo and copolymerization activity, but also require this polymerization activity to be subjected to the influence of different hydrogen concentration in the different reactor less, promptly (different party step of reaction) all have the catalytic activity of higher stable in different reactors.
At the problems referred to above, the Boris Pohle Mo Si company of Finland has developed a kind of ethylene polymerization catalysts that is used for, it is disclosed among the Chinese patent CN1158136, it is a kind of chlorination alkyl metal cpd of carrying on silica-gel carrier, a kind of dialkyl magnesium and reaction product and a kind of titanium compound with long carbochain fat alcohol compound of α-side chain, the outstanding feature of this catalyzer is when preparation is hanged down with high-molecular weight Alathon and multipolymer, under the different hydrogen partial pressure conditions, this catalyzer all can keep high polymerization activity, thus the problem above having solved.But owing in catalyst preparation process, used alkyl magnesium compound, the cost of this magnesium compound is higher, thereby increased catalyst production cost, the industrial application that is unfavorable for catalyzer, simultaneously, owing to introduced the long carbochain fat alcohol compound that has than the α-side chain of high viscosity, the viscosity of reaction system is higher when making the preparation catalyst composition, bring a lot of inconvenience to preparation process, the flowability of gained catalyst fines people in addition is satisfied.
In the prior art, known magnesium halide can being dissolved in the solvent system that organic epoxy compounds, organo phosphorous compounds and inert solvent form, form homogeneous solution, halogenide with transition metals Ti in the presence of at least a precipitation additive reacts, the preparation olefin polymerization catalyst components, its main contents are disclosed among the Chinese patent CN85100997, but this catalyst component is when being used for vinyl polymerization, and activity of such catalysts is lower.Therefore, on the basis of this patent catalyst system, a kind of catalyzer that is used for vinyl polymerization or copolymerization is disclosed again among the Chinese patent CN1229092A, it has introduced a kind of electron donor stimulator in magnesium halide solution, the for example Fatty Alcohol(C12-C14 and C12-C18) of low-carbon (LC) or aliphatic ether, this catalyzer has shown very high activity when being used for the slurry polymerization of ethene, the particle form of resulting polymers is better simultaneously, and apparent density is also higher.But the hydrogen response of this catalyzer is unsatisfactory.Particularly when synthetic ethene polymers than high fusion index, its activity is with the improve of hydrogen add-on, and it is very big to descend.To be unfavorable for the ethene polymers have wider molecular weight distribution even to be bimodal distribution with producing like this.
The inventor finds by experiment repeatedly, by introduce a kind of alkylaluminium cpd in the preparation process of above-mentioned catalyst component, has good hydrogen regulation performance and copolymerization performance when making prepared catalyzer be used for the polymerization of ethene or copolymerization.And the cost of catalyzer is lower, and synthesis technique is simple, is beneficial to industrial applications.
Summary of the invention
The purpose of this invention is to provide a kind of catalyzer that is used for the catalyst component of vinyl polymerization or copolymerization and contains this component, described catalyzer has good hydrogen regulation performance and copolymerization performance when polymerization that is used for ethene or copolymerization.And the cost of catalyzer is lower, and synthesis technique is simple, is beneficial to industrial applications.Be specially adapted to produce and have than wide molecular weight distribution even be the ethene polymers of bimodal distribution.
A kind of catalyst component that is used for vinyl polymerization or copolymerization, it comprises at least a magnesium halide, at least a organic alcohol compound, and the reaction product of at least a organo-metallic aluminum compound and at least a titanium compound is prepared by the method that comprises following steps:
(1) magnesium halide is dissolved in the solvent system that contains organic epoxy compounds and organo phosphorous compounds, forms homogeneous solution;
(2) in above-mentioned magnesium halide dissolution process or fully after the dissolving, with at least a general formula be R
1Organic alcohol of OH contacts, R in the formula
1Be C
1-C
10Alkyl, the C of straight or branched
3-C
10Cycloalkyl, C
6-C
10Aryl, C
7-C
10Alkaryl;
(3) mixture that step (2) is obtained and at least a general formula are Ti (OR
3)
4-mX
mTitanium compound carry out contact reacts, obtain titaniferous ingredient of solid catalyst, R in the formula
3Be C
1～C
14Aliphatic group, X chooses from F, Cl, Br or its mixture, m is 1～4 integer,
In above-mentioned arbitrary step, introducing at least a general formula is AlR
2 nX
3-nOrgano-aluminium compound carry out contact reacts, R in the formula
2Be identical or different C
1～C
20Alkyl can be a straight chain, and side chain or cyclic alkyl, X are halogen, n=1,2 or 3.
According to the preparation method of disclosed magnesium compound solution among the Chinese patent CN85100997, the present invention is dissolved in magnesium halide in the solvent system that contains organic epoxy compounds and organo phosphorous compounds, and disclosed associated viscera is introduced the present invention among the CN85100997.Wherein said magnesium halide is selected from the complex compound, magnesium dihalide molecular formula of the water of magnesium dihalide, magnesium dihalide or alcohol one of them or two halogen atoms by alkyl or halogen-oxyl institute metathetical derivative.Concrete compound is as magnesium dichloride, dibrominated magnesium, chlorination phenoxy group magnesium, chlorination isopropoxy magnesium, chlorination butoxy magnesium etc., wherein preferred magnesium dichloride.Described halogenated magnesium compound can be used alone or as a mixture.
Described organic epoxy compounds comprises at least a in oxide compound, glycidyl ether and the inner ether of 2～8 aliphatics alkene, diolefine or halo fat group alkene or diolefine of carbonatoms.Concrete as: oxyethane, propylene oxide, butylene oxide ring, butadiene oxide, butadiene double oxide, epoxy chloropropane, methyl glycidyl ether, diglycidylether or tetrahydrofuran (THF).
Described organo phosphorous compounds is the hydrocarbyl carbonate or the halo hydrocarbyl carbonate of ortho-phosphoric acid or phosphorous acid.Concrete as: ortho-phosphoric acid trimethyl, ortho-phosphoric acid triethyl, ortho-phosphoric acid tri-n-butyl, ortho-phosphoric acid triphenylmethyl methacrylate, trimethyl phosphite, triethyl-phosphite, tributyl phosphate, tricresyl phosphite benzene methyl or phosphorous acid benzene methyl.
Wherein in every mole of magnesium halide: organic epoxy compounds: 0.2-10mol, preferred 0.5～4mol; Organo phosphorous compounds: 0.1～5mol, preferred 0.3～1.0mol.
In order to make dissolving more abundant, in this solvent system, can randomly add inert diluent, common this inert diluent can adopt hexane, heptane, octane, benzene,toluene,xylene, 1,2-ethylene dichloride, chlorobenzene and other hydro carbons or halogenated hydrocarbon compound are as long as help the magnesium halide dissolved to use.Above-mentioned inert diluent can use separately, use also capable of being combined.
Solvent temperature is between 10-150 ℃, and upper temperature limit is no more than the boiling point of solvent.
Dissolution time is as the criterion to dissolve fully.
In the preparation of magnesium compound solution, each component of solution adds order in no particular order.
In order to improve the polymerization activity of catalyzer, in the magnesium halide dissolution process or after dissolving fully, should be R with at least a general formula
1Organic alcohol of OH contacts and obtains mixing solutions, R in the formula
1Be C
1-C
10Alkyl, the C of straight or branched
3-C
10Cycloalkyl, C
6-C
10Aryl, C
7-C
10Alkaryl.Concrete as: methyl alcohol, ethanol, propyl alcohol, 2-propyl alcohol, butanols, amylalcohol 2-methyl amyl alcohol, 2-ethylpentanol, 2-ethyl butanol, hexanol, 2-Ethylhexyl Alcohol, hexalin, benzylalcohol, xylyl alcohol.Be preferably: ethanol
The organic alcohol compound amount is in every mole of magnesium: 0.05-100mol, and is preferred: 0.5-50mol.
It is worthy of note that in order to improve final performance such as hydrogen response, the copolymerization performance etc. of catalyzer, the present invention is AlR to introduce at least a general formula in above-mentioned magnesium compound solution especially
2 nX
3-nOrgano-aluminium compound carry out contact reacts, R in the formula
2Be identical or different C
1～C
20Alkyl can be a straight chain, and side chain or cyclic alkyl, X are halogen, n=1,2 or 3; Particular compound such as trimethyl aluminium, triethyl aluminum, tri-propyl aluminum, triisobutyl aluminium, three n-butylaluminum, tri-n-hexyl aluminum, tri-n-octylaluminium, aluminium diethyl monochloride, ethyl aluminum dichloride, sesquialter chloroethyl aluminium etc.
In every mole of magnesium halide, the add-on of organo-aluminium compound is: 0.01～15 mole, be preferably 0.1～8 mole.
In addition, for catalytic activity or the hydrogen response that further improves catalyst component, can also further add organic zinc compound, for example alkyl zinc compound is specially: zinc methide, zinc ethyl, dipropyl zinc, di-isopropyl zinc, dibutyl zinc, diisobutyl zinc, dioctyl zinc etc.In every mole of magnesium halide, the add-on of organic zinc compound is: 0.01～15 mole, be preferably 0.1～8 mole.
In the preparation process of above-mentioned catalyst component of the present invention, when general formula is Ti (OR
3)
4-mX
mTitanium compound and during the mixing solutions contact reacts of magnesium compound, the solids containing titanium catalyst component that can obtain having catalytic activity passes through conventional washing, drying and other steps then, just can be applicable in the polymerization or copolymerization of ethene R in the general formula
3Be C
1～C
14Aliphatic group, X chooses from F, Cl, Br or its mixture, m is 1～4 integer.Concrete as: a kind of or its mixture in titanium tetrachloride, titanium tetrabromide, titanium tetra iodide, four titanium butoxide, purity titanium tetraethoxide, a chlorine triethoxy titanium, dichloro diethoxy titanium, trichlorine one ethanolato-titanium, the titanous chloride, described titanium compound should be a completely soluble liquefied compound under application of temperature, in the non-polar solvent, preferred titanium tetrachloride.
The add-on of titanium compound in every mole of magnesium halide: 0.5-50mol, be preferably 1-20mol, more preferably: 4-10mol.
The contact reacts temperature of titanium compound and magnesium compound mixing solutions is preferably :-30～20 ℃.React in order to make the easier control of reaction, preferably titanium compound to be added in the magnesium compound solution.
For the particle shape of control catalyst, also can in the arbitrary steps before the contact reacts of titanium compound and magnesium compound mixing solutions, add at least a following precipitation additive.
Described precipitation additive is selected from a kind of in organic acid, organic acid anhydride, organic ether, the organic ketone or their mixture.As: diacetyl oxide, Tetra hydro Phthalic anhydride, Succinic anhydried, MALEIC ANHYDRIDE, pyromellitic acid anhydride, acetic acid, propionic acid, butyric acid, vinylformic acid, methacrylic acid, acetone, methylethylketone, benzophenone, methyl ether, ether, propyl ether, butyl ether, amyl ether.
The add-on of precipitation additive is counted with every mole of magnesium halide: 0.01～1.0 mole, preferred: 0.05～0.5 mole.
In addition, in the preparation of catalyst component of the present invention, also can further after the solids containing titanium catalyst component forms, randomly add above-mentioned organic alcohol and/or organo-aluminium compound and handle according to requirement to the catalyst component different performance.
The invention still further relates to a kind of catalyzer that is used for vinyl polymerization or copolymerization, it contains above-mentioned catalyst component of the present invention and at least a general formula is AlR
nX
3-nOrgano-aluminium compound, R is that hydrogen or carbonatoms are 1～20 alkyl in the formula, X is a halogen, n is the number of 1＜n≤3.Can select for use one or more aluminum alkyls to mix use, preferred AlEt
3, Al (iso-Bu)
3, Al (n-C
6H
13)
3, Al (n-C
8H
17)
3, AlEt
2Cl etc.Aluminium in the catalyzer and titanium are than between the control 2～200.
The catalyzer that the present invention relates to is applicable to the equal polymerization of various ethene or the copolymerization of ethene and other alpha-olefins, and wherein alpha-olefin adopts a kind of in propylene, butylene, amylene, hexene, octene, the 4-methylpentene-1.
The catalyzer that the present invention relates to is when catalyzed ethylene polymerization, has better hydrogen regulation sensitivity, have the advantages that higher catalytic activity is all arranged under high hydrogen partial pressure or low hydrogen dividing potential drop, and the gained ethene polymers has particle form and size distribution preferably, is specially adapted to the polyvinyl resin that the tandem double-reactor prepares the molecular weight distribution broad peak or is bimodal pattern.
Embodiment
Embodiment given below is for the present invention is described, rather than limits the invention.
Testing method:
Melting index is to measure according to ASTM D1238-57
Embodiment 1:
1, catalyst component is synthetic: through high-purity N
2Fully in the metathetical vial, add the anhydrous MgCl of 4.0 grams successively
2, 100ml toluene, 5.0ml epoxy chloropropane, 6.0ml tributyl phosphate, 2.0ml ethanol, 1.0 gram Tetra hydro Phthalic anhydride and 22mmol aluminium diethyl monochlorides, under 70 ℃, kept 1 hour, this solution is cooled to-15 ℃, again the 30ml titanium tetrachloride is splashed in it, slowly be warming up to 80 ℃ then, use toluene and hexane wash 2 times after the filtration respectively, vacuum-drying obtains solid catalyst 13 grams.
2, vinyl polymerization: volume is that 2 liters stainless steel still is through N
2Fully after the displacement, add hexane 1000ml, triethyl aluminum 2.0mmol/l hexane, 6.8 milligrams of above-mentioned solid catalysts add hydrogen to 0.28Mpa, are warming up to 80 ℃, feed ethene again to 1.0MPa, under 80 ℃, polymerization 2 hours.Get polymkeric substance 107 grams.Record melt index MI
2.16: 1.1 grams/10 minutes.Polymerization result sees Table 1.The size distribution of polymkeric substance sees Table 2.
Embodiment 2
1, catalyst component is synthetic: with embodiment 1
2, vinyl polymerization: remove polymerization adding catalytic amount and change 21.6 milligrams into, add hydrogen to 0.6Mpa, all the other get polymkeric substance 78 grams, MI with embodiment 1
2.16: 92 grams/10 minutes.Polymerization result sees Table 1.
Embodiment 3
1, catalyst component is synthetic: with embodiment 1
2, the copolymerization of ethene and hexene: remove polymerization adding catalytic amount and change 7.8 milligrams into, and add outside the hexene 30ml, all the other get polymkeric substance 126 grams, MI with embodiment 1
2.16: 1.7 grams/10 minutes, the degree of branching (infrared): 3.8 CH
3/ 1000C.Polymerization result sees Table 1.
Embodiment 4
1, catalyst component is synthetic: with embodiment 1
2, the polymerization of ethene and hexene: volume is that 2 liters stainless steel still is through N
2Fully after the displacement, add hexane 1000ml, triethyl aluminum 2.0mmol/l hexane, 22.5 milligrams of above-mentioned solid catalysts add hydrogen to 0.8Mpa, are warming up to 85 ℃, feed ethene again to 1.1MPa, under 85 ℃, polymerization 120 minutes, reduce to room temperature, bleed off unreacting gas, add hexene 20ml, be warming up to 80 ℃, feed ethene to 0.4Mpa, 80 ℃ of following polymerizations 1 hour.Get polymkeric substance 170 grams, MI
2.16: 0.29 gram/10 minutes, MI
21.6/ MI
2.16: 45.Polymerization result sees Table 1.
The polyethylene MI that obtains by above-mentioned step-by-step polymerization reaction test
21.6/ MI
2.16Data, catalyzer of the present invention as can be seen can wide molecular weight distribution polyethylene.
Embodiment 5
1, catalyzer is synthetic: only the add-on with aluminium diethyl monochloride changes 13.2mmol into, and all the other obtain solid catalyst 6.1 grams with embodiment 1.
2, vinyl polymerization: with embodiment 1, the catalyzer add-on changes 10 milligrams into, gets polymkeric substance 187 grams.Record melt index MI
2.16: 0.45 gram/10 minutes.Polymerization result sees Table 1.
Embodiment 6
1, catalyzer is synthetic: with embodiment 5.
2, vinyl polymerization: with embodiment 2, the catalyzer add-on changes 33.3 milligrams into, gets polymkeric substance 187 grams, MI
2.16: 27 grams/10 minutes, polymerization result sees Table 1.
Embodiment 7
1, catalyzer is synthetic: only the add-on with aluminium diethyl monochloride changes 8.8mmol into, and all the other obtain solid catalyst 6.2 grams with embodiment 1.
2, vinyl polymerization: with embodiment 1, the catalyzer add-on changes 43.2 milligrams into, gets polymkeric substance 399 grams, MI
2.16: 1.6 grams/10 minutes, polymerization result sees Table 1.
Embodiment 8
1, catalyzer is synthetic: with example 7,
2, vinyl polymerization: with embodiment 2, the catalyzer add-on changes 56.6 milligrams into, gets polymkeric substance 214 grams, MI
2.16: 29 grams/10 minutes, polymerization result sees Table 1.。
Embodiment 9
1, catalyzer is synthetic: with embodiment 7, only will add ethanol 2.0ml and change adding 1.0ml ethanol and 1.0ml isooctyl alcohol into, and obtain solid catalyst 7.9 grams.
2, vinyl polymerization: except that the catalyzer add-on was 7.9mg, other got polymkeric substance 89 grams, MI with example 1
2.16: 0.78 gram/10 minutes, polymerization result sees Table 1.
Embodiment 10
1, catalyzer is synthetic: with example 9,
2, vinyl polymerization: with embodiment 2, the catalyzer add-on changes 15.7 milligrams into, gets polymkeric substance 89 grams, MI
2.16: 108 grams/10 minutes, polymerization result sees Table 1.
Embodiment 11
1, catalyzer is synthetic: through high-purity N
2Fully in the metathetical vial, add the anhydrous MgCl of 4.0 grams successively
2, 100ml toluene, 5.0ml epoxy chloropropane, 6.0ml tributyl phosphate, 2.0ml ethanol, 1.0 gram Tetra hydro Phthalic anhydrides, under 70 ℃, kept 1 hour, this solution is cooled to-10 ℃, again the 30ml titanium tetrachloride is splashed in it, slowly be warming up to 80 ℃ then, in temperature-rise period, slowly add the 22mmol aluminium diethyl monochloride, use toluene and hexane wash 2 times after the filtration respectively, vacuum-drying obtains solid catalyst.
2, vinyl polymerization:, except that the catalyzer add-on is 7.1mg, get polymkeric substance 223 grams, MI with example 1
2.16: 0.43 gram/10 minutes, polymerization result sees Table 1.
Embodiment 12
1, catalyzer is synthetic: with example 11,
2, vinyl polymerization: with example 2, remove the catalytic amount add-on and change 21.1 milligrams into, get polymkeric substance 144 grams, MI
2.16: 42.5 grams/10 minutes, polymerization result sees Table 1.
Embodiment 13
1, catalyzer is synthetic: with example 1, except that the 2-ethyl-hexanol with 2ml replaces the ethanol.
2, polymerization:,, get polymkeric substance 116 grams, MI except that catalytic amount is 7.6 milligrams with example 1
2.16: 0.47 gram/10 minutes, polymerization result sees Table 1.
Embodiment 14
1, catalyzer is synthetic: with example 13,
2, vinyl polymerization: with example 2, adding catalytic amount is 20 milligrams, gets polymkeric substance 41 grams, MI
2.16: 107 grams/10 minutes, polymerization result sees Table 1.
Embodiment 15
1, catalyzer is synthetic: remove amount of alcohol 6ml, and aluminium diethyl monochloride 32mmol, all the other obtain solid catalyst 7.7 grams with embodiment 1.
2, vinyl polymerization: except that the add-on of catalyzer changes into 12 milligrams, all the other are with embodiment 1, polymkeric substance 323 grams.Record melt index MI
2.16: 0.79 gram/10 minutes.Polymerization result sees Table 1.
Embodiment 16
1, catalyzer is synthetic: with example 15,
2, vinyl polymerization: with example 2, adding catalytic amount is 45 milligrams, gets polymkeric substance 317 grams, MI
2.16: 73 grams/10 minutes, polymerization result sees Table 1.
Comparative Examples 1
1, catalyzer is synthetic: except that not adding the aluminium diethyl monochloride, all the other obtain solid catalyst 5.1 grams with embodiment 1.
2, vinyl polymerization: except that the add-on of catalyzer changes into 10 milligrams, all the other are with embodiment 1, polymkeric substance 228 grams.Record melt index MI
2.16: 0.65 gram/10 minutes.Polymerization result sees Table 1, and the polymkeric substance particle diameter distributes and sees Table 2.
Comparative Examples 2
1, catalyzer is synthetic: with Comparative Examples 1,
2, vinyl polymerization: remove to add catalytic amount and change 31.5 milligrams into, all the other are with embodiment 2,
Get polymkeric substance 131 grams, MI
2.16: 25.3 grams/10 minutes, polymerization result sees Table 1, and the polymkeric substance particle diameter distributes and sees Table 2.
Table 1 polymerization result
| Embodiment | P Hydrogen/P Ethene MPa/MPa | Catalyst activity kgPE/gcat | Melt index MI 2.16 |
| Example 1 | 0.28/0.72 | 16. | 1.1 |
| Example 2 | 0.60/0.40 | 3.6 | 92 |
| Example 3 | 0.28/0.72 | 16 | 1.7 |
| Example 5 | 0.28/0.72 | 19 | 0.45 |
| Example 6 | 0.60/0.40 | 5.6 | 27 |
| Example 7 | 0.28/0.72 | 9.2 | 1.6 |
| Example 8 | 0.60/0.40 | 3.8 | 29 |
| Example 9 | 0.28/0.72 | 11 | 0.78 |
| Example 10 | 0.60/0.40 | 2.8 | 108 |
| Example 11 | 0.28/0.72 | 31 | 0.43 |
| Example 12 | 0.60/0.40 | 6.8 | 42 |
| Example 13 | 0.28/0.72 | 15 | 0.47 |
| Example 14 | 0.60/0.40 | 2.0 | 107 |
| Example 15 | 0.28/0.72 | 27 | 0.79 |
| Example 16 | 0.60/0.40 | 6.9 | 73 |
| Comparative Examples 1 | 0.28/0.72 | 23 | 0.6 |
| Comparative Examples 2 | 0.60/0.40 | 4.2 | 25 |
Embodiment and Comparative Examples data are increasing under the situation of hydrogen partial pressure more as can be seen from table 1, and the polyvinyl melting index of catalyzer gained of the present invention is higher, and hydrogen response is better, and catalytic activity is also higher.
The size distribution of table 2 polymkeric substance
| Numbering | More than the 900 μ m | 900～ 450 | 450～ ? 300 | 300～ ? 200 | 200～ ? 150 | 150～ ? 125 | 125～ ? 105 | 105～ ? 97 | 97～ ? 76 | Below the 76 μ m |
| Example 1 | 2.9 | 3.1 | 27 | 62 | 4.1 | 0.3 | 0.2 | 0.4 | 0.3 | 0 |
| Example 2 | 3.6 | 3.2 | 42 | 48 | 2.4 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Contrast 1 | 0.2 | 2.0 | 38 | 43 | 7.6 | 2.4 | 1.4 | 3.2 | 2.0 | 0.8 |
| Contrast 2 | 0.4 | 12 | 45 | 22 | 6.0 | 2.4 | 1.4 | 4.6 | 4.4 | 2.0 |
Polymkeric substance size data from table 2 as can be seen, after adding alkylaluminium cpd, catalyst component of the present invention has not only shown better hydrogen regulation sensitivity, and the size distribution of polymkeric substance is comparatively even, fine powder is less, and this point extremely helps suitability for industrialized production.
Embodiment 17:
1, catalyzer is synthetic: in the abundant metathetical reactor of high pure nitrogen, add 75mL toluene, 0.02mol n-Octanol, the anhydrous MgCl of 0.06mol
2, be warmed up to 50 ℃ and kept 15 minutes, add 0.048mol epoxy chloropropane, 0.033mol tributyl phosphate, 0.025mol ethanol and kept 30 minutes, add the 0.01mol Tetra hydro Phthalic anhydride and continue to stir 1 hour, cool to room temperature, add zinc ethyl 10ml reaction 10 minutes, cool to 0 ℃, add 5mLAlEt
2Cl reaction 10 minutes drips 0.75molTiCl
4, slowly be warmed up to 90 ℃ then, reacted 1 hour, use toluene and hexane wash after the filtration respectively, vacuum-drying gets solid catalyst.
2, vinyl polymerization: volume is that 2 liters stainless steel still is through N
2Do you fully after the displacement, add hexane 1000ml, triethyl aluminum 2.0mmol/l hexane, above-mentioned solid catalyst? milligram adds hydrogen to 0.25Mpa, is warming up to 80 ℃, feeds ethene again to 1.0MPa, under 80 ℃, and polymerization 1 hour.Polymerization activity is 41.6kgPE/gTi, records melt index MI
2.16: 0.30 gram/10 minutes.
Embodiment 18:
1, catalyzer is synthetic: in the abundant metathetical reactor of high pure nitrogen, add 75mL toluene, 0.02mol n-Octanol, the anhydrous MgCl of 0.06mol
2, be warmed up to 50 ℃ and kept 15 minutes, adding 0.048mol epoxy chloropropane, 0.033mol tributyl phosphate, 0.025mol ethanol were kept 30 minutes, adding the 0.01mol Tetra hydro Phthalic anhydride continues to stir 1 hour, cool to room temperature, add zinc ethyl 15ml reaction 10 minutes, cool to 0 ℃, add 7.5mLAlEt
3Reacted 10 minutes, and dripped 0.75molTiCl
4, slowly be warmed up to 90 ℃ then, reacted 1 hour, use toluene and hexane wash after the filtration respectively, vacuum-drying gets solid catalyst.
2, vinyl polymerization: with embodiment 17.Polymerization activity is 43.0kgPE/gTi, records melt index MI
2.16: 0.25 gram/10 minutes.
Claims (17)
1, be used for vinyl polymerization or copolymerization catalyst component, it is prepared by the method that comprises following steps:
(1) magnesium halide is dissolved in the solvent system that contains organic epoxy compounds and organo phosphorous compounds, forms homogeneous solution;
(2) in above-mentioned magnesium halide dissolution process or fully after the dissolving, with at least a general formula be R
1Organic alcohol of OH contacts, R in the formula
1Be C
1-C
10Alkyl, the C of straight or branched
3-C
10Cycloalkyl, C
6-C
10Aryl, C
7-C
10Alkaryl;
(3) mixture that step (2) is obtained and at least a general formula are Ti (OR
3)
4-mX
mTitanium compound carry out contact reacts, obtain titaniferous ingredient of solid catalyst, R in the formula
3Be C
1～C
14Aliphatic group, X chooses from F, Cl, Br or its mixture, m is 1～4 integer,
In above-mentioned arbitrary step, introducing at least a general formula is AlR
2 nX
3-nOrgano-aluminium compound carry out contact reacts, R in the formula
2Be identical or different C
1～C
20Alkyl can be a straight chain, and side chain or cyclic alkyl, X are halogen, n=1,2 or 3.
2, the catalyst component that is used for vinyl polymerization or copolymerization according to claim 1 is characterized in that described general formula is AlR
2 nX
3-nOrgano-aluminium compound be selected from trimethyl aluminium, triethyl aluminum, tri-propyl aluminum, triisobutyl aluminium, three n-butylaluminum, tri-n-hexyl aluminum, tri-n-octylaluminium, aluminium diethyl monochloride, ethyl aluminum dichloride, sesquialter chloroethyl aluminium.
3, the catalyst component that is used for vinyl polymerization or copolymerization according to claim 1 and 2 is characterized in that, in every mole of magnesium halide, the add-on of organo-aluminium compound is 0.01～15 mole.
4, the catalyst component that is used for vinyl polymerization or copolymerization according to claim 1 is characterized in that described organic pure general formula R
1Among the OH, R in the formula
1Be C
1-C
10Alkyl, the C of straight or branched
3-C
10Cycloalkyl, C
6-C
10Aryl, C
7-C
10Alkaryl.
5, the catalyst component that is used for vinyl polymerization or copolymerization according to claim 4 is characterized in that described organic pure general formula R
1Among the OH, R in the formula
1Be C
1-C
10The alkyl of straight or branched.
6, the catalyst component that is used for vinyl polymerization or copolymerization according to claim 4 is characterized in that described general formula is R
1OH is selected from methyl alcohol, ethanol, propyl alcohol, 2-propyl alcohol, butanols, amylalcohol, 2-methyl amyl alcohol, 2-ethylpentanol, 2-ethyl butanol, hexanol, 2-Ethylhexyl Alcohol, hexalin, benzylalcohol, xylyl alcohol.
According to claim 1 or the 4 or 5 described catalyst components that are used for vinyl polymerization or copolymerization, it is characterized in that 7, in every mole of magnesium halide, the add-on of organic alcohol compound is 0.05～50 mole.
8, the catalyst component that is used for vinyl polymerization or copolymerization according to claim 1 is characterized in that described magnesium halide is selected from the complex compound, magnesium dihalide molecular formula of the water of magnesium dihalide, magnesium dihalide or alcohol one of them or two halogen atoms by alkyl or halogen-oxyl institute metathetical derivative.
9, the catalyst component that is used for vinyl polymerization or copolymerization according to claim 1 is characterized in that described general formula is Ti (OR
3)
4-mX
mTitanium compound be selected from a kind of in titanium tetrachloride, titanium tetrabromide, titanium tetra iodide, four titanium butoxide, purity titanium tetraethoxide, a chlorine triethoxy titanium, dichloro diethoxy titanium, trichlorine one ethanolato-titanium, the titanous chloride or their mixture.
10, the catalyst component that is used for vinyl polymerization or copolymerization according to claim 1, it is characterized in that described organic epoxy compounds is selected from oxyethane, propylene oxide, butylene oxide ring, butadiene oxide, one or more of epoxy chloropropane, methyl glycidyl ether, diglycidylether, tetrahydrofuran (THF).
11, the catalyst component that is used for vinyl polymerization or copolymerization according to claim 1 is characterized in that described organo phosphorous compounds is selected from one or more of ortho-phosphoric acid trimethyl, ortho-phosphoric acid triethyl, ortho-phosphoric acid tri-n-butyl, ortho-phosphoric acid triphenylmethyl methacrylate, trimethyl phosphite, triethyl-phosphite, tributyl phosphate, tricresyl phosphite benzene methyl.
12, the catalyst component that is used for vinyl polymerization or copolymerization according to claim 1, wherein the ratio between the each component is in every mole of magnesium halide, and organic alcohol compound is that 0.05～50 mole, organo-aluminium compound are that 0.01～15 mole, titanium compound are 0.5～50 mole.
13, the catalyst component that is used for vinyl polymerization or copolymerization according to claim 1, it is characterized in that also can adding at least a precipitation additive before in step (3), described precipitation additive is selected from a kind of in organic acid, organic acid anhydride, organic ether, the organic ketone or their mixture.
14, the catalyst component that is used for vinyl polymerization or copolymerization according to claim 1 is characterized in that also can adding at least a alkyl zinc compound before in step (3).
15, the catalyst component that is used for vinyl polymerization or copolymerization according to claim 14, it is characterized in that described alkyl zinc compound is selected from zinc methide, zinc ethyl, dipropyl zinc, di-isopropyl zinc, dibutyl zinc, diisobutyl zinc and dioctyl zinc.
16, a kind of catalyzer that is used for vinyl polymerization or copolymerization, it comprises the reaction product of following component:
(a) the described catalyst component that is used for vinyl polymerization or copolymerization of one of claim 1-15;
(b) at least a general formula is AlR
nX
3-nOrgano-aluminium compound, R is that hydrogen or carbonatoms are 1～20 alkyl in the formula, X is a halogen, n is the number of 1＜n≤3.
17, the application of the described catalyzer of claim 16 in preparation wide molecular weight distribution ethene polymers or multipolymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03119633 CN1233671C (en) | 2003-03-18 | 2003-03-18 | Catalyt and its component for polymerization of ethylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03119633 CN1233671C (en) | 2003-03-18 | 2003-03-18 | Catalyt and its component for polymerization of ethylene |
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| Publication Number | Publication Date |
|---|---|
| CN1532210A CN1532210A (en) | 2004-09-29 |
| CN1233671C true CN1233671C (en) | 2005-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03119633 Expired - Lifetime CN1233671C (en) | 2003-03-18 | 2003-03-18 | Catalyt and its component for polymerization of ethylene |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100417671C (en) * | 2005-03-16 | 2008-09-10 | 中国石油化工股份有限公司 | Catalyst compsns. for olefin polymerization and catalyst thereof |
| CN100379771C (en) * | 2005-05-11 | 2008-04-09 | 北京燕化高新催化剂有限公司 | Preparation process of catalyst for propylene polymerization |
| CN100379770C (en) * | 2005-05-11 | 2008-04-09 | 北京燕化高新催化剂有限公司 | Preparation process of catalyst for ethylene thick liquid polymerizing |
| EP1947123B1 (en) * | 2005-10-31 | 2016-03-09 | China Petroleum & Chemical Corporation | Catalyst component for ethylene polymerization, preparation thereof and catalyst containing the same |
| CN101173014B (en) * | 2006-10-31 | 2011-05-04 | 中国石油化工股份有限公司 | Catalyst for polymerization of ethylene or combined polymerization, producing method and application of the same |
| CN101633704B (en) * | 2008-07-24 | 2011-12-28 | 中国石油化工股份有限公司 | Catalyst component used for ethylene polymerization reaction and catalyst thereof |
| CN102020731B (en) * | 2009-09-10 | 2013-02-27 | 中国石油化工股份有限公司 | Catalyst component for vinyl polymerization and catalyst thereof |
| CN102875707A (en) * | 2011-07-14 | 2013-01-16 | 中国石油化工股份有限公司 | Preparation method of catalyst component for ethylene polymerization or copolymerization and catalyst thereof |
| CN112625154B (en) * | 2019-10-09 | 2023-07-21 | 中国石油化工股份有限公司 | Titanium catalyst component for olefin polymerization, preparation method thereof, catalyst containing titanium catalyst component and application of titanium catalyst component |
| CN112646064B (en) * | 2019-10-11 | 2023-01-03 | 中国石油化工股份有限公司 | Catalyst component for olefin polymerization, preparation method thereof, catalyst and application |
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