CN100389133C - Catalyst for olefin polymerization and its uses - Google Patents

Catalyst for olefin polymerization and its uses Download PDF

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CN100389133C
CN100389133C CNB200410086296XA CN200410086296A CN100389133C CN 100389133 C CN100389133 C CN 100389133C CN B200410086296X A CNB200410086296X A CN B200410086296XA CN 200410086296 A CN200410086296 A CN 200410086296A CN 100389133 C CN100389133 C CN 100389133C
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phenyl
electron donor
alkyl
catalyzer
methyl ether
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CN1765941A (en
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李勇
王文军
王大文
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Sinopec Beijing Research Institute of Chemical Industry
China Petroleum and Chemical Corp
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Sinopec Beijing Research Institute of Chemical Industry
China Petroleum and Chemical Corp
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Abstract

The present invention provides a catalyst for olefin polymerization and the use thereof. The catalyst is composed of a magnesium compound, a titanium compound and an electron donor, i.e. a 1, 3-diether compound with a '3-alkoxyallylalkylether 'structural unit to a scale. The catalyst for the olefin polymerization, which is modified by the electron donor of the present invention, has high activity and can be widely used for the polymerization of different olefin. The catalyst for the olefin polymerization, which is modified by the electron donor of the present invention, is used as a main catalyst, and the molecular weight distribution of a polymer obtained by using a metal organic compound as a cocatalyst to carry out the olefin polymerization is wide.

Description

A kind of catalyzer and application thereof that is used for olefinic polymerization
Technical field
The present invention relates to a kind of olefin polymerization catalysis and the application of this catalyzer in olefinic polymerization of electron donor modification.
Background technology
The fifties, Z-N have been invented the low pressure olefin polymerizing catalyst, are principal constituent with the titanium tetrachloride, and aluminum alkyls is a promotor.Middle nineteen sixties finds that magnesium chloride is very effective carrier, and olefin polymerizating activity significantly improves.By adding electron donor, can adjust polyacrylic degree of isotacticity.The beginning internal electron donor is an ethyl benzoate, and adding methyl p-methyl benzoate during polymerization is external electron donor, and the degree of isotacticity that obtains polymkeric substance reaches 90%～95%, and activity reaches 10kg (PP/gCat) (mass polymerization 2h, 70 ℃).Find phthalate later on as internal electron donor, alcoxyl silane is as external electron donor, and degree of isotacticity reaches 95%～99%, and activity reaches 40kg (PP/gCat) (mass polymerization 2h, 70 ℃).The end of the eighties, reported a kind of novel electron donor 1,3 diether, it is not needing external electron donor can obtain super-active 70～120kg (PP/gCat) and very high degree of isotacticity 95%～99% (mass polymerization 2h, 70 ℃) during as the catalyzer internal electron donor.As at Chinese patent CN1042547A and the disclosed catalyst component that is used for olefinic polyreaction of CN1143651A, special 1 of two ether groups that contain have been adopted, 3 one diether compounds are as electron donor, 2 one sec.-propyls-2 one isopentyl-1 for example, 3 one Propanal dimethyl acetals, 2,2 one diisobutyls-1,3 Propanal dimethyl acetal and 9,9-two (methoxymethyl) fluorenes.Basell company find succinate class electron donor (WO2003022894, WO2001057099), the gained polypropylene not only has higher degree of isotacticity, and polypropylene has wider molecular weight distribution, polypropylene has processibility and use properties preferably.Other electron donor also have the malonic ester class (JP2003119213, WO2002088193), diamines, diketone (CN 054139A) etc.
Adding electron donor olefin polymerization catalysis in the known references, electron donor not with the titanium tetrachloride effect, by influencing distribution and the load of titanium tetrachloride on the magnesium chloride crystal, influence activity of such catalysts and performance.And the magnesium chloride with the electron donor modification in the known references is the requirement height of the olefin polymerization catalysis of carrier to polymer raw, and the raw material of each kind even each trade mark needs special-purpose separately catalyzer, has increased production cost and difficulty.
Summary of the invention
One of the object of the invention provides a kind of olefin polymerization catalysis that is widely used in the modification of various types of olefins polymeric electron donor.
Two of the object of the invention provides the application of above-mentioned catalyzer in olefinic polymerization.
One of the object of the invention is realized by following mode.
The catalyzer that is used for olefinic polymerization of the present invention, it comprises the reaction product of titanium compound, magnesium compound and electron donor, wherein,
Described titanium compound general structure is Ti (OR) mX 4-mWherein, X is a halogen; M is 0～4; R is C 1～C 20Alkyl, preferred C 2～C 5Alkyl; Specific examples such as TiCl 4, TiBr 4, TiF 4, TiI 4, Ti (OR) Cl 3, Ti (OR) 2Cl 2, Ti (OR) 3Cl, most preferably TiCl 4
Described magnesium compound general structure is Mg (OR ') nX 2-nCompound, or general structure is MgX 2The magnesium halide of p (R-OH) and the pure mixture that forms.Wherein, X is a halogen; N is 0～2; P is 1～4; R is the alkyl of C1～C20, the alkyl of preferred C2～C5; R ' is C 1～C 10Alkyl, preferred C 2～C 5Alkyl; Specific examples such as magnesium ethylate, magnesium chloride, magnesium bromide, magnesium iodide, magnesium fluoride;
Described electron donor general structure is shown in (I):
Wherein, R 1And R 2Be C 1-C20Alkyl, C 6-C 20Aryl or C 2-C 20Alkylene;
R 3-R 6Be hydrogen, C 1-C 20Alkyl, C 6-C 20Aryl or C 2-C 20Alkylene; And they can connect into saturated or unsaturated ring texture each other, and this ring texture comprises arbitrarily and R 3-R 6The group of identical definition, one or more heteroatoms are as the substituent of carbon atom and/or hydrogen atom; Preferred R 5And R 6The ring texture that connects between the group is selected from the ring texture of one of phenyl ring, naphthalene nucleus, cyclopentadiene, indenes and fluorenes, and this ring texture comprises arbitrarily and R 5And R 6The group of identical definition, one or more heteroatoms are as the substituent of carbon atom and/or hydrogen atom;
R 1-R 6Comprise the substituent of one or more heteroatomss arbitrarily as carbon atom and/or hydrogen atom;
Described heteroatoms is selected from halogen, silicon, nitrogen and sulphur atom.
Catalyzer of the present invention is a benchmark with every mol magnesium compound, and the add-on of described titanium compound is 2～10mol, and the add-on of described electron donor is 0.05～0.5mol.
Preferred one group of structural general formula (II) is in electron donor compound general formula of the present invention (I):
Figure C20041008629600061
Wherein, R 7-R 10Be hydrogen, C 1-C 20Alkyl, C 6-C 20Aryl or C 2-C 20Alkylene, two adjacent radicals R 7And R 8Between or R 9And R 10Between can connect into ring texture; This ring texture comprises the substituent of one or more heteroatomss as carbon atom and/or hydrogen atom arbitrarily, and described heteroatoms is selected from halogen, silicon, nitrogen and sulphur atom; R 7And R 8Between or R 9And R 10Between the preferred phenyl ring of ring texture that connects into, and comprise arbitrarily and R 7-R 10The group of identical definition is as the substituent of hydrogen atom;
Work as R 1And R 2When being methyl simultaneously, R 3, R 4And R 7～R 10Can not be hydrogen simultaneously; R 1And R 2Preferred C 1-C 6Alkyl, C 6-C 18Aryl or C 3-C 12Alkylene.
The electron donor that is included in the general formula (I)-(II) of the present invention can be selected from following particular compound:
2,4-dimethoxy-2-amylene;
4-methoxyl group-2-oxyethyl group-2-amylene;
3-sec.-propyl-2,4-dimethoxy-2-amylene;
3-sec.-propyl-4-methoxyl group-2-oxyethyl group-2-amylene;
3-isobutyl--2,4-dimethoxy-2-amylene;
3-isobutyl--4-methoxyl group-2-oxyethyl group-2-amylene;
3-isopentyl-2,4-dimethoxy-2-amylene;
3-isopentyl-4-methoxyl group-2-oxyethyl group-2-amylene;
1-phenyl-1,3-dimethoxy butylene;
1-phenyl-3-methoxyl group-1-oxyethyl group butylene;
1-phenyl-2-sec.-propyl-1,3-dimethoxy butylene;
1-phenyl-2-isobutyl--1,3-dimethoxy butylene;
1-phenyl-2-isopentyl-1,3-dimethoxy butylene;
2-methoxy-benzyl methyl ether;
2-methoxybenzyl benzyl ethyl ether;
2-ethoxy benzyl methyl ether;
2-ethoxy benzylidene benzyl ethyl ether;
2-n-propoxy-benzyl methyl ether;
2-n-propoxy-benzyl ethyl ether;
2-isopropoxide benzyl methyl ether;
2-isopropoxide benzyl ethyl ether;
2-n-butoxy benzyl methyl ether;
2-n-butoxy benzyl ethyl ether;
2-isobutoxy benzyl methyl ether;
2-isobutoxy benzyl ethyl ether;
2-tert.-butoxy benzyl methyl ether;
2-tert.-butoxy benzyl ethyl ether;
2-isopentyloxy benzyl methyl ether;
2-isopentyloxy benzyl ethyl ether;
1-(2-p-methoxy-phenyl) ethyl-methyl ether;
1-(2-p-methoxy-phenyl) ethyl diethyldithiocarbamate ether;
1-(2-ethoxyl phenenyl) ethyl-methyl ether;
1-(2-ethoxyl phenenyl) ethyl diethyldithiocarbamate ether;
1-(2-n-propoxy-phenyl) ethyl-methyl ether;
1-(2-n-propoxy-phenyl) ethyl diethyldithiocarbamate ether;
1-(2-isopentyloxy phenyl) ethyl-methyl ether;
1-(2-isopentyloxy phenyl) ethyl diethyldithiocarbamate ether;
1-(2-p-methoxy-phenyl) propyl group methyl ether;
1-(2-ethoxyl phenenyl) propyl group methyl ether;
1-(2-n-propoxy-phenyl) propyl group methyl ether;
1-(2-isopentyloxy phenyl) propyl group methyl ether;
1-(2-p-methoxy-phenyl) butyl methyl ether;
1-(2-ethoxyl phenenyl) butyl methyl ether;
1-(2-n-propoxy-phenyl) butyl methyl ether;
1-(2-isopentyloxy phenyl) butyl methyl ether;
1-(2-p-methoxy-phenyl) isobutyl-methyl ether;
1-(2-ethoxyl phenenyl) isobutyl-methyl ether;
1-(2-n-propoxy-phenyl) isobutyl-methyl ether;
1-(2-isopentyloxy phenyl) isobutyl-methyl ether;
1-(2-p-methoxy-phenyl) isopentyl methyl ether;
1-(2-ethoxyl phenenyl) isopentyl methyl ether;
1-(2-n-propoxy-phenyl) isopentyl methyl ether;
1-(2-isopentyloxy phenyl) isopentyl methyl ether;
1-(2-p-methoxy-phenyl) benzyl methyl ether;
1-(2-p-methoxy-phenyl) benzyl ethyl ether;
1-(2-ethoxyl phenenyl) benzyl methyl ether;
1-(2-ethoxyl phenenyl) benzyl ethyl ether;
1-(2-n-propoxy-phenyl) benzyl methyl ether;
1-(2-n-propoxy-phenyl) benzyl ethyl ether;
1-(2-isopentyloxy phenyl) benzyl methyl ether;
1-(2-isopentyloxy phenyl) benzyl ethyl ether;
1-(the trimethyl silicon based phenyl of 2-methoxyl group-3-) benzyl methyl ether;
1-(the trimethyl silicon based phenyl of 2-methoxyl group-3-) benzyl ethyl ether;
1-(the trimethyl silicon based phenyl of 2-oxyethyl group-3-) benzyl methyl ether;
1-(the trimethyl silicon based phenyl of 2-oxyethyl group-3-) benzyl ethyl ether;
1-(the trimethyl silicon based phenyl of 2-n-propoxy--3-) benzyl methyl ether;
1-(the trimethyl silicon based phenyl of 2-n-propoxy--3-) benzyl ethyl ether;
1-(the trimethyl silicon based phenyl of 2-isopentyloxy-3-) benzyl methyl ether;
1-(the trimethyl silicon based phenyl of 2-isopentyloxy-3-) benzyl ethyl ether;
1-(2-p-methoxy-phenyl) is to tertiary butyl benzyl methyl ether;
1-(2-p-methoxy-phenyl) is to tertiary butyl benzyl ethyl ether;
1-(2-ethoxyl phenenyl) is to tertiary butyl benzyl methyl ether;
1-(2-ethoxyl phenenyl) is to tertiary butyl benzyl ethyl ether;
1-(2-n-propoxy-phenyl) is to tertiary butyl benzyl methyl ether;
1-(2-n-propoxy-phenyl) is to tertiary butyl benzyl ethyl ether;
1-(2-isopentyloxy phenyl) is to tertiary butyl benzyl methyl ether;
1-(2-isopentyloxy phenyl) is to tertiary butyl benzyl ethyl ether;
1-(the trimethyl silicon based phenyl of 2-methoxyl group-3-) is to tertiary butyl benzyl methyl ether;
1-(the trimethyl silicon based phenyl of 2-methoxyl group-3-) is to tertiary butyl benzyl ethyl ether;
1-(the trimethyl silicon based phenyl of 2-oxyethyl group-3-) is to tertiary butyl benzyl methyl ether;
1-(the trimethyl silicon based phenyl of 2-oxyethyl group-3-) is to tertiary butyl benzyl ethyl ether;
1-(the trimethyl silicon based phenyl of 2-n-propoxy--3-) is to tertiary butyl benzyl methyl ether;
1-(the trimethyl silicon based phenyl of 2-n-propoxy--3-) is to tertiary butyl benzyl ethyl ether;
1-(the trimethyl silicon based phenyl of 2-isopentyloxy-3-) is to tertiary butyl benzyl methyl ether;
1-(the trimethyl silicon based phenyl of 2-isopentyloxy-3-) is to tertiary butyl benzyl ethyl ether;
1-(2-p-methoxy-phenyl) O-methoxy benzyl methyl ether;
1-(2-p-methoxy-phenyl) O-methoxy benzyl ethyl ether;
1-(2-ethoxyl phenenyl) O-methoxy benzyl methyl ether;
1-(2-ethoxyl phenenyl) O-methoxy benzyl ethyl ether;
1-(2-n-propoxy-phenyl) O-methoxy benzyl methyl ether;
1-(2-n-propoxy-phenyl) O-methoxy benzyl ethyl ether;
1-(2-isopentyloxy phenyl) O-methoxy benzyl methyl ether;
1-(2-isopentyloxy phenyl) O-methoxy benzyl ethyl ether;
1-(the trimethyl silicon based phenyl of 2-methoxyl group-3-) O-methoxy benzyl methyl ether;
1-(the trimethyl silicon based phenyl of 2-methoxyl group-3-) O-methoxy benzyl ethyl ether;
1-(the trimethyl silicon based phenyl of 2-oxyethyl group-3-) O-methoxy benzyl methyl ether;
1-(the trimethyl silicon based phenyl of 2-oxyethyl group-3-) O-methoxy benzyl ethyl ether;
1-(the trimethyl silicon based phenyl of 2-n-propoxy--3-) O-methoxy benzyl methyl ether;
1-(the trimethyl silicon based phenyl of 2-n-propoxy--3-) O-methoxy benzyl ethyl ether;
1-(the trimethyl silicon based phenyl of 2-isopentyloxy-3-) O-methoxy benzyl methyl ether;
1-(the trimethyl silicon based phenyl of 2-isopentyloxy-3-) is to the O-methoxy benzyl ethyl ether;
The adjacent methyl-benzyl methyl ether of 1-(2-p-methoxy-phenyl);
The adjacent methyl-benzyl ethyl ether of 1-(2-p-methoxy-phenyl);
The adjacent methyl-benzyl methyl ether of 1-(2-ethoxyl phenenyl);
The adjacent methyl-benzyl ethyl ether of 1-(2-ethoxyl phenenyl).
The olefin polymerization catalysis of electron donor modification of the present invention is got by following method preparation.
Magnesium compound is suspended in the organic solvent of (1: 2～1: 20), in the time of-25 ℃～0 ℃, splash into 2～6 times titanium compound in 3 hours, and under this temperature, stirred 1～3 hour, add electron donor, the mol ratio of magnesium halide and electron donor 20: 1～2: 1 when being warming up to 40～100 ℃.Be warming up to 60～135 ℃ of reactions 1～4 hour, the solid after the filtration uses titanium tetrachloride in 100～135 ℃ of reactions 1～4 hour again, filters, and with anhydrous solvent washing 1～6 time, vacuum-drying obtains the olefin polymerization catalysis of electron donor modification of the present invention.The optional toluene of above-mentioned organic solvent, heptane, haloalkane, or mixed solvent.Preferred toluene.
Above-mentioned olefin polymerization catalysis of the present invention is used for olefinic polyreaction with promotor IA-IIIA family organometallics.The general formula of described promotor can be expressed as R nMeX 3-n, R is hydrogen or C 1-C 20Alkyl, X represents halogen, Me is a metal, n=1-3.Can specifically be selected from Al (CH 3) 3, Al (C 2H 5) 3, Al (C 4H 9) 3, Al (iC 4H 9) 3, Al (C 2H 5) 2Cl, Al (C 2H 5) Cl 2Deng, best is triethyl aluminum and triisobutyl aluminium.During olefinic polymerization, the mol ratio of titanium content is 1～2000 in the consumption of aluminum alkyls and the catalyzer, is preferably 40～800.
The characteristics of the olefin polymerization catalysis of electron donor modification of the present invention:
The olefin polymerization catalysis of electron donor modification of the present invention is active high, can reach 1.36 * 10 4(g/gTi)～3.02 * 10 4(g/gTi).
Electron donor of the present invention and titanium compound reaction cause catalyzer to have the various active center, adopt the olefin polymerization catalysis polymerization resulting polymers molecular weight distribution of electron donor modification of the present invention wide.Wherein, molecular weight of polyethylene is distributed in more than 100, and the polypropylene molecule amount is distributed in more than 8.
In the olefin polymerization catalysis of electron donor modification of the present invention, electron donor and titanium compound reaction generate transition metal complex compound.It is the effect that electron donor of the present invention has part.The difference of ligancy, the metal complex that is generated are also different, and the catalyzer that obtains thus also has different performances.Therefore for the olefin polymerization catalysis of electron donor modification of the present invention,, just can obtain the catalyzer of different performance, be widely used in the polymerization of various types of olefins by changing the ratio of electron donor and titanium compound simply.
For two of the object of the invention, the olefin polymerization catalysis of electron donor modification of the present invention can be used for olefinic polymerization, is particularly useful for vinyl polymerization, propylene polymerization or ethylene, propylene copolymerization.
When the olefin polymerization catalysis of electron donor modification of the present invention was used for olefinic polymerization, polymerization process was as follows:
Use nitrogen fully to exchange after the 250ml there-necked flask, olefinic recycle hydrocarbon exchange three times.Then, add the solvent 100ml that handles through anhydrous and oxygen-free.Keeping temperature is 70 ℃, adds the solution that concentration is the 6mmol/ml triethyl aluminum while stirring, adds the olefin polymerization catalysis of electron donor modification of the present invention again.At alkene pressure is that normal pressure, polymerization temperature are under the condition of 20 ℃～90 ℃ (preferred 40 ℃～80 ℃), adopts hydrogen to make the polymericular weight conditioning agent, carries out polyreaction 0.5～1 hour.Add acidifying ethanol (10%) termination reaction, and use the washing with alcohol polymkeric substance, vacuum-drying obtains polymkeric substance.
Embodiment
Preparation of catalysts:
Embodiment 1
1.0 gram magnesium ethylates are suspended in 8 milliliters of toluene, in the time of 0 ℃, splashed into 2 milliliters of titanium tetrachlorides in 1 hour, and under this temperature, stirred 2 hours, be warming up to 70 ℃ and add electron donor O-methoxy benzyl methyl ether, the mol ratio of magnesium halide and electron donor 20: 1～2: 1.Be warming up to 120 ℃ of reactions 2 hours, the solid after the filtration was handled 1～4 hour in 120 ℃ with titanium tetrachloride again, filtered, and with anhydrous heptane wash 1～6 time, vacuum-drying gets solid catalyst 1.
Embodiment 2
Electron donor is become 1-(2-p-methoxy-phenyl) benzyl methyl ether, and other is operated with embodiment 1, prepares catalyzer 2.
Embodiment 3
Electron donor is become the adjacent methyl-benzyl methyl ether of 1-(2-p-methoxy-phenyl), and other is operated with embodiment 1, prepares catalyzer 3.
Embodiment 4
Electron donor is become 1-(2-p-methoxy-phenyl) butyl methyl ether, and other is operated with embodiment 1, prepares catalyzer 4.
Embodiment 5
Electron donor is become 1-(2-p-methoxy-phenyl) isopentyl methyl ether, and other is operated with embodiment 1, prepares catalyzer 5.
Olefinic polymerization:
Embodiment 6 vinyl polymerizations
250ml there-necked flask after fully exchanging with nitrogen again with after the ethene exchange three times, adds the toluene 100ml that handles through anhydrous and oxygen-free and stirs down, and temperature is 60 ℃, adds the 0.5ml triethyl aluminum, adds the above-mentioned catalyzer 2 of 0.0053g again.At ethylene pressure is under the non-pressurized condition, carries out polyreaction 0.5 hour, adds acidifying ethanol (10%) termination reaction, and uses washing with alcohol polymkeric substance, vacuum-drying to obtain 3.95 gram polymkeric substance.Active: 1.86 * 10 4(gPE/gTi), molecular weight distribution 108.5.
Embodiment 7 propylene polymerizations
250ml there-necked flask after fully exchanging with nitrogen again with after the propylene exchange three times, adds the toluene 100ml that handles through anhydrous and oxygen-free and stirs down, and temperature is 60 ℃, adds the 0.7ml triethyl aluminum, adds the above-mentioned catalyzer 2 of 0.0053g again.At propylene pressure is under the non-pressurized condition, carries out polyreaction 0.5 hour, adds acidifying ethanol (10%) termination reaction, and uses washing with alcohol polymkeric substance, vacuum-drying to obtain 6.38 gram polymkeric substance.Active: 3.0 * 10 4(gPP/gTi), molecular weight distribution 15.46.
Embodiment 8 ethylene-propylene copolymers
Behind the 250ml there-necked flask after fully exchanging with nitrogen, olefinic recycle hydrocarbon exchange three times, add the toluene 100ml that handles through anhydrous and oxygen-free and stir down, temperature is 60 ℃, adds the 0.5ml triethyl aluminum, adds the above-mentioned catalyzer 2 of 0.0050g again.Under non-pressurized condition, carried out polyreaction 0.5 hour, add acidifying ethanol (10%) termination reaction, and use washing with alcohol polymkeric substance, vacuum-drying to obtain 4.71 gram polymkeric substance.Active: 2.36 * 10 4(gPP/gTi).
Embodiment 9 propylene polymerizations
Change catalyzer, add 0.5ml triethyl aluminum and the above-mentioned catalyzer 1 of 0.0044g, other is operated with embodiment 7, obtains 5.32 gram polymkeric substance.Active: 3.02 * 10 4(gPP/gTi).
Embodiment 10 propylene polymerizations
Change catalyzer, add 0.5ml triethyl aluminum and the above-mentioned catalyzer 3 of 0.0054g, other is operated with embodiment 7, obtains 3.2 gram polymkeric substance.Active: 1.48 * 10 4(gPP/gTi).
Embodiment 11 propylene polymerizations
Change catalyzer, add the above-mentioned catalyzer 4 of 0.0060g, other is operated with embodiment 7, obtains 5.62 gram polymkeric substance.Active: 2.34 * 10 4(gPP/gTi).
Embodiment 12 propylene polymerizations
Add 1.5ml triethyl aluminum and the above-mentioned catalyzer 5 of 0.0123g, other is operated with embodiment 7, obtains 6.67 gram polymkeric substance.Active: 1.36 * 10 4(gPP/gTi).

Claims (11)

1. catalyzer that is used for olefinic polymerization, it comprises the reaction product of titanium compound, magnesium compound and electron donor, wherein,
The general structure of described titanium compound is Ti (OR) mX 4-m
It is Mg (OR ') that described magnesium compound is selected from general structure nX 2-nCompound, or general structure is MgX 2The magnesium halide of p (R-OH) and the pure mixture that forms;
The structure of described electron donor is shown in general formula (I):
Figure C2004100862960002C1
Wherein: X is a halogen;
R is C 1～C 20Alkyl;
R ' is C 1～C 10Alkyl;
M is 0～4, and n is 0～2, and p is 1～4;
R 1And R 2Be C 1-C 20Alkyl, C 6-C 20Aryl or C 2-C 20Alkylene;
R 3-R 6Be hydrogen, C 1-C 20Alkyl, C 6-C 20Aryl or C 2-C 20Alkylene;
R 5And R 6Connect into the ring texture that is selected from one of phenyl ring, naphthalene nucleus, cyclopentadiene, indenes and fluorenes between the group, and this ring texture comprises arbitrarily and R 5And R 6The group of identical definition.
2. catalyzer according to claim 1 is characterized in that with every mol magnesium compound be benchmark, and the add-on of described titanium compound is 2～10mol, and the add-on of described electron donor is 0.05～0.5mol.
3. catalyzer according to claim 1 is characterized in that described magnesium compound and titanium compound, and R and R ' are C in the general structure 2～C 5Alkyl.
4. catalyzer according to claim 1 is characterized in that described titanium compound is TiCl 4Described magnesium compound is magnesium ethylate, magnesium chloride, magnesium bromide, magnesium iodide or magnesium fluoride.
5. according to the described catalyzer of one of claim 1～4, it is characterized in that the middle R of general structure (I) of described electron donor 1And R 2Be C 1-C 6Alkyl, C 6-C 18Aryl or C 3-C 12Alkylene.
6. according to the described catalyzer of one of claim 1～4, the structure that it is characterized in that described electron donor is general formula (II):
Figure C2004100862960003C1
Wherein, R 7-R 10Be hydrogen, C 1-C 20Alkyl, C 6-C 20Aryl or C 2-C 20Alkylene, two adjacent radicals R 7And R 8Between or R 9And R 10Between can connect into ring texture; Work as R 1And R 2When being methyl simultaneously, R 3, R 4And R 7～R 10Can not be hydrogen simultaneously.
7. catalyzer according to claim 6 is characterized in that R in the general structure (II) of described electron donor 1And R 2Be C 1-C 6Alkyl, C 6-C 18Aryl or C 3-C 12Alkylene.
8. catalyzer according to claim 6 is characterized in that R in the general structure (II) of described electron donor 7And R 8Between or R 9And R 10Between connect into phenyl ring, and comprise arbitrarily and R 7-R 10The group of identical definition is as the substituent of hydrogen atom.
9. catalyzer according to claim 6 is characterized in that R in the general structure (II) of described electron donor 1And R 2Be C 1-C 6Alkyl; R 3Be C 1-C 6Alkyl, phenyl, methyl substituted phenyl or ethyl substituted-phenyl, R 4, R 7, R 8, R 9And R 10Be hydrogen.
10. catalyzer according to claim 6 is characterized in that described electron donor is selected from following compounds:
The O-methoxy benzyl methyl ether;
1-(2-p-methoxy-phenyl) benzyl methyl ether;
The adjacent methyl-benzyl methyl ether of 1-(2-p-methoxy-phenyl);
1-(2-p-methoxy-phenyl) butyl methyl ether;
1-(2-p-methoxy-phenyl) isopentyl methyl ether.
11. the application of the described catalyzer of one of claim 1～10 in the preparation olefin polymerization catalyst system.
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JP2001048928A (en) * 1999-08-12 2001-02-20 Japan Polychem Corp Catalyst for polymerizing propylene and method for polymerizing propylene
EP1395617A1 (en) * 2001-06-13 2004-03-10 Basell Poliolefine Italia S.p.A. Components and catalysts for the (co)polymerization of olefins

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