Component of catalyst for the polymerization of alpha-olefins

 

(57) Abstract:

Component of the catalyst for polymerization of olefins, obtained by reaction of the halide compounds of tetravalent titanium or halogen alcoholate and an electron-donor compound with a porous polymer substrate, which is applied to diploid magnesium or a magnesium compound that does not contain Mg-C bonds and can turn into diploid, characterized in that the content of Mg before and after reaction with a compound of titanium is from 6 to 12 wt.%. 3 C.p. f-crystals, 3 tables.

This invention relates to catalyst components for the (co) polymerization of CH2= CHR olefins, where R is hydrogen or a linear or branched alkilany radical with 1 to 6 carbon atoms or arrowy radical.

Known to produce catalyst components containing halide compound of titanium and magnesium halides, by applying the above-mentioned compounds of titanium and magnesium oxides, such as silica and alumina or porous polymeric carriers, for example, of polymers of styrene-divinylbenzene.

In particular, in the United Kingdom patent N 2028347 revealed that the components of the catalyst, deposited on inert carriers, such as irenia solvent and reaction of the resulting product with the compound of the transition metal, especially titanium. The maximum number of MgCl2deposited on the substrate before reaction with the compound of the transition metal is 75 wt. and this corresponds to about 19 wt. Mg. In this case, the activity of the catalysts obtained from the aforementioned components, depending on the contents of Mg, such that it increases depending on the decrease in magnesium content, the activity starts to decline when the magnesium content is reduced to less than 2 wt. Maximum activity is achieved when the Mg content is from 2 to 3 wt. moreover, as indicated in the examples, it is approximately 5000 g of polyethylene/g catalyst component per hour in an atmosphere of ethylene. Due to the lack of electron-donor compound supported component of these catalysts are not suitable for obtaining highly stereoregular alpha-olefin polymers.

The components of the catalyst on the carrier, obtained by impregnation of metal oxide, such as silicon dioxide or aluminum oxide, ORGANOMETALLIC compound of magnesium, selected in particular from manilkara and organic compounds of magnesium Grignard reagent, and then the reaction of the substrate with a halide compound of titanium, is known from the patent UK N1306044 examples. The catalysts used for the polymerization of ethylene, where, however, their output is not high enough (500 1400 g of polymer/g catalyst component/hour when working with ethylene under a pressure of 10 ATM).

From U.S. patent N 4263168 it is known that the components of the catalyst for polymerization of propylene and other alpha-olefins are produced by reactions of metal oxide, such as silicon dioxide or aluminum oxide containing hydroxyl groups on the surface, with organometallics a magnesium compound of the formula MgR(2-x)Xx(where R is a hydrocarbon radical, X is halogen, and x is a number from 0.5 to 1.5), and subsequent reaction with electron-donating compound and titanium chloride (4).

Organometallics the magnesium compound is reacted in a molar excess relative to the hydroxyl groups, while electron-donating compound is used in an amount up to 1 gram-molecules per gram-molecule came into the reaction of the compound of magnesium, preferably from 0.5 to 0.8 gram-molecule. The reaction of TiCl4carried out, preferably with excess TiCl4.

Alternatively, the reaction of the metal oxide can be performed before or after the reaction with electron-donor compound, with kalilou group. Halogenide agent can be added during the reaction with electron-donating compound. The content of magnesium in supported the compounds described in the examples, does not exceed 7%, However, the activity of the catalysts obtained from the aforementioned components, very low, i.e., is of the order of several tens of grams of polypropylene per gram catalyst component at atmospheric pressure.

Catalysts based on halide compounds of magnesium deposited on the porous media, which have high activity and stereoregularity, in addition to reducing the amount of undesirable halogenated compounds, which remain in the polymer, allow relatively easy to adjust the morphology of the polymer. Indeed in modern industrial processes for the production of polyolefin there is a need for catalysts capable of forming a polymer with controlled morphological properties (narrow distribution of particle size and relatively high volumetric weight).

In published European application N 344755 describes the components of the catalyst obtained by supporting dihalide magnesium or compounds of magnesium, which can turn into diploid, parisorum the alcoholate is possible in the presence of electron-donating compounds. The content of magnesium in the catalyst components described in the examples, is the biggest 5,16 wt.

The activity of the thus obtained catalysts does not exceed 4000 g polymer/g catalyst component in the polymerization of propylene, the content of titanium in the catalyst component is 2 to 3 wt.

This polymerization is carried out under a pressure of about 7 ATM. propylene.

The examples also show that the content of titanium to magnesium in the catalyst varies from about 0.4 to 0.8.

In addition, in the published European patent application A-0434082 describes the components of the catalyst containing a porous silicon dioxide or aluminum oxide, which is applied to diploid magnesium, halogen, titanium halide or an alcoholate, and electron-donating compound selected from specific classes of ethers.

The examples show the maximum yield of stereoregular polypropylene of about 4000 g/g catalyst component, working with propylene at a pressure of 7 ATM, and the output of 14000 g/g catalyst component employed in liquid propylene.

In this case, the high activity is the result of the presence of these ethers.

In U.S. patent N 5064799 described catalysts obtained by reaction of the halide compounds of tetravalent titanium and an electron-donor compound with a solid substance obtained by the reaction of metal oxides containing hydroxyl groups on the surface (for example, silicon dioxide or aluminum oxide), with organometallics a magnesium compound of the formula MgR(2-x)Xx, where R is a hydrocarbon radical, X is halogen or or or COX' radical (where X' is halogen), x a number from 0.5 to 1.5, applied in such quantity as to exclude the recovery of titanium during the subsequent reaction of the solid product with a halide compound of titanium.

In the catalysts described in the examples, the maximum content of magnesium is 10,65 wt. the titanium content ranging from 2.5% to 5 wt. and the content of Ti/Mg is from about 0.3 to 1.5. The maximum yield of stereoregular polypropylene is approximately 28000 g/g of catalyst in liquid propylene.

Suddenly discovered that it is possible to obtain catalysts on carriers of porous polymers, which are particularly active in the polymerization of CH2= CHR olefins, where R is hydrogen or alkilany radical Tory prepare, applying the components of the catalyst obtained by the reaction of the halide compounds of tetravalent titanium or halogen alcoholate and an electron-donor compound, with a porous polymer carrier, which caused diploid magnesium or compounds of magnesium, which does not contain Mg-C bonds and can turn into diploid. These components of the catalyst are characterized in that the content of magnesium, to reaction with a compound of titanium and titanium present in the final component of the catalyst after the reaction with the compound of titanium is from 6 to 12 wt. in relation to the weight component of the catalyst. Performance of these catalysts are unexpected because on the basis of the known prior art, it was impossible to determine what the maximum operating characteristic value of the activity of the polymer and its morphological properties can be obtained when the magnesium content of 6 to 12 wt

This result is particularly unexpected that:

1) at the specified content magnesium content of titanium is relatively low and it can be compared with the contents in the components of the catalysts described in European application, And -344755, which are also deposited on porous polymers;

2) despite iskiepiai yield stereoregular polypropylene is significantly higher than that which can be obtained with all the described components of the catalysts.

In accordance with the present invention, the magnesium content in the porous polymeric media before the reaction with the titanium compounds is 6 to 12 wt. moreover, it is preferable to choose is to have the content of compounds of magnesium deposited on a porous carrier, corresponding to the volume porosity of the initial polymer carrier. If the content of compounds of magnesium is higher than the porosity of the polymer carrier, you get the catalysts that will form polymers with poor morphological properties.

The content of Ti:Mg by weight lower than 0.25, and preferably it is from 0.22 to 0.05; the molar ratio of the titanium content to the content of the electron-donating compound is from 0.3:1 to 3:1, preferably the ratio is 1.

Polymer carrier has a porosity of more than 0.5 ml/g, preferably 1 to 3 ml/g, and the diameter distribution of pores such that at least 70 - pores have a radius of more than 100 , preferably from 150 to 350 (measurement carried out by the BET method, the absorption of nitrogen).

Specific surface (according to BET method) is usually between 3 between 10 and 200 microns.

You can use any type of polymeric material that does not react with the components of the catalyst and which can be obtained in the form of particles with a specified porosity and pore distribution.

Preferably used partially reticulated polymers, which are used to produce ion exchange resins. These polymers derived from styrene monomers, such as monomers of styrene, ethylbenzene, vinyltoluene, methylstyrene and polyfunctional monomers such as divinylbenzene and definitelya.

Methods of obtaining partially cross-linked copolymers are described in published European application N 344755 (corresponds to the application of the U.S. N 359234).

The preferred polymer is partially crosslinked copolymers of styrene-divinyl-benzene.

The method of preparation of the catalyst in accordance with the present invention is implemented by suspending the polymer carrier in a solution of dihalide magnesium or compounds of magnesium, which can turn into diploid and then by evaporating the solvent or additive portions solution dihalide magnesium or compounds of magnesium in the solid up until the solid becomes fluid; and this operation the cluster device can also be implemented in the current layer, thus the media is always maintained in a fluid condition.

Compounds of magnesium, which can be used is chosen from the group: halide compounds manilkara, minidiary, maniackiller, magnetoacoustic, mineralogie-alcoholate, magnetisability, mineralogically and manualkilborne.

These compounds are usually dissolved in aliphatic or aromatic hydrocarbons or ethers.

Halide compounds of magnesium are usually soluble in alcohols, ethers, ketones, and esters.

Preferred compounds of magnesium are: MgCl2RMgCl, RMgBr, MgR2, Mg(OR')2, ClMgOR', BrMgOR', Mg(OCOR)2, RMgOR and mMg(OR)2, pTi(OR)4where R is C1-C20alkyl, C(3-20)cycloalkyl, or C6-20aryl, R' has the same meaning as R or -- Si(R)3and m and p are integers from 1 to 4.

When media containing compounds of magnesium, which already halogenation or do not contain Mg-alkalemia communication (i.e. they do not contain links Mg-C), the catalyst obtained by the reaction of the substrate with an excess amount of titanium halide or halogen alcoholate, preferably TiCl4and with electron-donating compound, and he Obolonska compounds of titanium and thoroughly washed with anhydrous hexane or heptane as long until there is no chlorine ions in the filtrate. Processing connection titanium can be repeated.

When media containing compounds of magnesium with Mg-alkylamine links to have high catalytic activity, it is necessary to transform these components of the catalyst, prior to processing the said compound of titanium, magnesium halides or compounds of magnesium, which will not be able to recover tetravalent titanium, i.e. compounds that do not contain links Mg-C.

Compounds that can be used for this purpose are, for example, HCl, Cl2, SiCl4and CHLOROSILANES, HSiCl3, Al-alkylhalides, water, alcohols, carboxylic acids, orthoepy, esters, aldehydes, ketones and carbon dioxide.

They can be used in stoichiometric amount or in excess with respect to Mg-alkylbis relations at a temperature of from 9 to 150oC.

Electron-donating compound, which is used in the synthesis of stereospecific catalyst components can be introduced into the reaction before or after treatment with compound of titanium. If it is introduced into the reaction after the reaction is usually carried out in an aromatic hydrocarbon medium, such as benzene or toluene, or in halogenosilanes hydrocarbon.of or simultaneously with the machining of titanium compound.

For preparation of the catalyst component in accordance with the present invention can be applied to any electron-donating compound, which can form complex compounds with metal-halide compounds of magnesium and/or halide compounds of tetravalent titanium. Examples of compounds which can be used are ethers, esters, ketones, lactones and compounds containing atoms of N, P and/or S. Preferred compounds are esters bicarbonate acid of the aromatic series, for example petalia acid and esters of malonic, trimethyloxonium, succinic acid and carbonic acid.

Particularly suitable ethers described in European patent application N 361494 (corresponding to U.S. patent, N 4971937), which have the following formula:

< / BR>
where R, R1and R2the same or different and represent linear or branched C1-18alkalemia,3-18cycloalkane,6-18arrouye,7-18alkylacrylate or arylalkylamine group, and R1or R2can also be hydrogen. In particular, R is methyl and R1and R2the same or different and are ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, neopentyl, isopentyl, the pan, 2-isopropyl-2-isopentyl-1,3-dimethoxypropane, 2,2-bis(cyclohexylmethyl)-1,3-dimethoxypropane and 2,2-bis(cyclohexyl)-1,3-dimethoxypropane.

Specific examples of esters are Diisobutyl, dioctyl and definiltely, benzylbutylphthalate, Diisobutyl and diethylmalonate, ethyl ester trimethylhexanoic acid, ethylvinylbenzene and diphenyl ester of carbonic acid.

The components of the catalyst in accordance with the present invention are obtained from compounds of aluminum-alkyl, preferably Al-trialkyl, these catalysts suitable for the polymerization of CH2=CHR olefins, where R is hydrogen or alkilany radical with 1 to 6 carbon atoms or arrowy radical, in particular phenyl, and for polymerization mixtures thereof, possibly containing a small amount of diene.

Typical examples of compounds of aluminiumrail are aluminization, aluminiumresistant, aluminite-n-butyl, and linear or cyclic compounds containing two or more aluminum atoms that are linked by a bridge with the atoms O, N, or through groups SO4and SO3. You can also apply aluminiumalloy in a mixture with another trialkylaluminium. Connection aluminiuim apply in respect of Al:Ti is usually preclovis connection aluminum electrondonor connection number, is usually 0.01 to 0.25 moles/gram-molecule of aluminiumgie.

Electron-donating compound is preferably chosen among simple and complex esters, silicon compounds, which contain at least the connection of Si-OR (R is a hydrocarbon radical) and 2,2,6,6-tetramethylpiperidine.

When a solid component of catalyst containing ester or bicarbonate acid of the aromatic series, such as phthalic acid or ester of malonic, maleic, trimethyloxonium, amber or carbonic acid, the electron-donating compound, which should be used together with alkilany compound of aluminum, preferably chosen among silicon compounds containing at least the connection of Si-OR.

Examples of silicon compounds are: phenyltriethoxysilane, diphenylmethylsilane, dicyclopentadienyliron, methylcyclohexylamine, di-tert-butyl-dimethoxysilane, i-propyl-tert-butyl-dimethoxysilane.

When the catalyst component is a simple ether selected among those described in European patent application N 361494, stereoregularity of the catalyst is sufficiently high, which does not require the use of electron-donor compounds together with also, the liquid monomer or monomer solution in an inert hydrocarbon solvent, or in gas phase, or even by conducting the polymerization in the liquid and gas phases.

The polymerization temperature is usually from 0 to 150oWith, preferably 60-100oWith at atmospheric pressure or above.

The catalysts in accordance with the present invention is used as in homopolymerization and copolymerization of olefins. In the case of copolymers, the catalysts used, for example, to obtain a static crystalline copolymers of propylene with minor amounts of ethylene and butene and possibly more senior alphaolefin or elastomeric ethylene copolymers may contain minor amounts of a diene (such as butadiene or Accadian

1,4).

The catalysts in accordance with the present invention can also be applied in alternating polymerization of propylene and mixtures of propylene with ethylene and/or butene and high-quality alpha-olefins to obtain impact-resistant polypropylene.

Before polymerization catalysts can pre-contact with a small amount of olefin monomer (pre-polymer clay is at a temperature from room temperature up to 60oWith, the result is a number of polymers, which exceeds 0.5 to 3 times the mass of the solid component of catalyst, either in the liquid monomer, and in this case get to 1000 grams of polymer per gram of solid component.

The following examples are provided to illustrate the invention without its limitations.

Example 1.

1-A) Synthesis stiroldivinilbenzol polymer.

In a reactor with a capacity of 2 liters impose a suspension system consisting of distilled water (450 ml), 5% aqueous solution, brought to pH 7 by NaOH ROAGIT S manufacturing company Rohm and Haas (16.2 ml) bleaching clay (PROL IT CIO of the firm Caffaro S. p.A.) (2.25 g) and NaCl (0.45 g).

The suspension is stirred at room temperature for 30 minutes and then injected it into the prepared separately monomer system consisting of 100 g of styrene, of 67.5 g of divinylbenzene (50%) in toluene (225 ml) and n-octane (75 mm) containing 3 g of benzoyl peroxide. The polymerization carried out by stirring (350 rpm) for 10 hours at 80oC.

Thus obtained spherical copolymer is separated by centrifugation and repeatedly washed with water. Then it is dried and extracted with acetone for 24 chatanim and dried in vacuum.

Thus, receive the polymer with a specific surface area of 376 m2/g and a porosity of 2.51 ml/g (measured by the nitrogen BET method),

1-B) Impregnation of the polymer Agnihotra (BuMgCl).

In a tubular reactor with a capacity of 250 ml, equipped with a porous septum at the bottom and purged with anhydrous nitrogen through the partition, enter 2.5 g of the polymer at ambient temperature and in a stream of nitrogen. Then injected dropwise a tetrahydrofuran (THF), maintain the polymer in suspension by a stream of nitrogen, which prevents the formation of agglomerates.

After impregnation of magnesium content in the polymer will be of 7.6 wt.

1-C) Reaction between deposited on the carrier BuMgCl and ethanol (EtOH).

The polymer impregnated magnesium-chlorbutanol process described in the same reactor 20 ml of tetrahydrofuran containing ethanol (EtOH) in equimolecular the number in relation to supported BuMgCl. Magnesium content in the resulting product is 7.9%

1-D) Titanoboa supported on a carrier polymer.

The product prepared in Example 1, add slowly under nitrogen atmosphere with stirring and at room temperature, 100 ml of TiCl4then add 2-I, heated at a temperature of 100oWith and allow it to react at this temperature for 2 hours.

The product is then filtered while hot, add 100 ml of TiCl4and repeat the treatment at a temperature of 100oC for 2 hours. After processing is completed, it is filtered while hot and washed with anhydrous N-heptane twice at a temperature of 90oAnd three times at room temperature.

The composition of the obtained solid component of catalyst specified in table. 1.

Examples 2 6

Use the method and ingredients of example 1 except that use compounds other than ethanol for the treatment described in example 1-C. Applied compounds and composition of the obtained solid catalyst components are shown in table. 1.

Example 7.

Use the method and ingredients of example 1 except that instead of ethanol in the treatment of 1-apply an excessive amount of hydrochloric acid, which bubbled directly into the tubular reactor. The composition of the obtained solid component of catalyst specified in table.1.

Example 8.

Use the method and ingredients of example 7 except that th is component of the catalyst specified in table. 1.

Example 9.

2.5 g of the polymer obtained in example 1, are suspended in 20 ml of ethanol in a flask connected to a rotary evaporator and mixed in an inert atmosphere at room temperature for 1 hour. The ethanol is then distilled under vacuum to obtain a fluid product; the content of absorbed ethanol in the above-mentioned product 56 wt. The impregnated polymer is introduced into the tubular reactor described in example 1, then drop by drop serves the solution minicomputer, BuMgCl 1M in tetrahydrofuran in a stoichiometric quantity with respect to ethanol (EtOH). Tetanization carried out as described in example 1. the Composition of the obtained solid component of catalyst specified in table. 2.

Example 10.

Use the method and ingredients of example 9 except that the absorbed ethanol is removed by heating up until the ethanol content is 30 wt. The composition of the obtained solid component of catalyst specified in table. 2.

Example 11.

22.5 ml of a solution of Agnihotra (BuMgCl 1M) in tetrahydrofuran injected at room temperature in the inert atmosphere conditions in a flask connected to a rotary evaporator, and then added slowly with re the creators suspended 2.5 g of polymer, obtained in example 1, and stirred for 30 minutes and the tetrahydrofuran is evaporated to obtain a flowable solid product having a magnesium content of 7.1 wt. Impregnated polymer titanium as described in example 1. the Composition of the obtained solid component of catalyst specified in table.2.

Example 12.

2 g of the polymer obtained in example 1, are suspended at room temperature in the inert atmosphere conditions in a flask connected to a rotary evaporator in a solution containing 1.9 grams MgCl2in 70 ml of tetrahydrofuran. It is stirred for 1 hour and then the tetrahydrofuran is evaporated to obtain a flowable solid product having a magnesium content of 6.8 wt.

Impregnated polymer titanium as described in example 1. the Composition of the obtained solid component of catalyst specified in table. 2.

Example 13.

Use the method and ingredients of example 12 except that instead of MgCl2in tetrahydrofuran apply 20 ml of N-heptane containing 6,12 g Ti (OC4H9)42.5 Mg (OC3H9)2adduct. The obtained solid product has a content of magnesium equal to 6 wt. Impregnated polymer titanium as described in example polymer, obtained in example 1 And injected at room temperature and in an inert atmosphere in a 100 ml flask, equipped with a dropper and a mechanical stirrer, and then the flask is added slowly drop by drop with stirring to 9.7 ml MgCl2in ethanol (concentration of 150 g/l).

The solvent is evaporated, then poured drop by drop and evaporated twice. Gain of 11.5 g of solid product containing 4.35 g MgCl2equal to the magnesium content of 9.6 wt. Impregnated polymer titanium as in example 1. the Composition of the obtained solid component of catalyst specified in table. 2.

Example 15.

Use the method and ingredients of example 1 except that instead of dimethoxypropane apply diisobutylphthalate in a molar ratio of 1:3 with respect to a supported magnesium during tianyoude described in example 1-A. composition of the obtained solid component of catalyst specified in table. 2.

Comparative example 1.

Using the reactor described in example 1, 2.5 g of the polymer obtained in example 1, is treated with a wet nitrogen until then, until you get a water content of 3.5 wt. Then the impregnated polymer is treated with a certain amount of BuMgCl 1M in tetrahydrofuran, equimolecular component of the catalyst specified in table. 2.

Comparative example 2.

Use the method and ingredients of example 1 except that 2.5 g of the polymer obtained in example 1, impregnated with 6 ml BuMgCl 1M in tetrahydrofuran. The composition of the solid component of catalyst in the table. 2.

Comparative example 3.

Use the method and ingredients of example 2 except that instead of dimethoxypropane used diisobutylphthalate (IBF) Titanian. The composition of the obtained solid component of catalyst specified in table. 2.

Examples 16 to 30 and comparative examples 4 to 6.

(Polymerization of propylene)

Method A.

In a stainless steel autoclave with a capacity of 2000 ml equipped with anchor stirrer, injected under vacuum at a temperature of 20oWith 20 ml of heptane suspension containing the appropriate amount of catalyst component, 5 mmol of Al(C2H5)3, 800 ml of hydrogen and 500 g of propylene. The contents are heated at a temperature of 70oAnd polymerized for 3 hours. The obtained polymer is dried and extracted with boiling heptane for determining the rate of stereoregularity.

The way Century.

Use the method and ingredients of the way And except S) and 5 mmol of Al (C2H5)3.

The applied method and catalysts, the results of the polymerization and the properties of the obtained polymers are shown in table. 3.

Example 31 (polymerization of ethylene).

The suspension containing 1000 ml of anhydrous heptane, 5 mmol of Al(ISO4H9)3and 52 mg of the catalyst component obtained in example 1 is injected under vacuum at a temperature of 65oC autoclav used in examples 16 to 30, while introducing hydrogen under a pressure of 4 ATM. and ethylene with a total pressure of 11 ATM. Content will polimerizuet at a temperature of 70oC for 2 hours, while continuously served the monomer to maintain a constant pressure. After filtration and drying receive 245 g of polymer, which corresponds to the output 4700 g of polyethylene per gram catalyst component with a characteristic viscosity of 1.9 DL/g and degree F/E 30 (MIE and MIF are determined according to the standard AS TMW-1238).

1. Component of catalyst for the polymerization of alpha-olefins constituting the reaction product of the titanium compounds selected from the group comprising tetravalent and halogenoalkanes titanium, and electrondonor with a porous carrier coated with dihalogenide magnesium entered in the form of a solution in oil carbon, characterized in that it is obtained using the polymer carrier with a porosity of 2.51 to 3.00 cm3/g with a mass ratio of titanium, magnesium 0,12 0,21, a molar ratio of the compound titanium: electrondonor of 0.45 to 1.1:1.0, and the magnesium concentration of 8.3 to 11.8 wt. on 100 wt. component of the catalyst.

2. Component under item 1, characterized in that it is a reaction product obtained with the use of titanium tetrachloride as compounds of titanium and electrondonor having a General formula I

< / BR>
where R, R1and R2the same or different, linear or branched C1C18-alkyl, C3C18-cycloalkyl, C6C18-aryl, C7C18-alkylaryl or arylalkyl, or R1or R2the hydrogen.

3. Component under item 2, characterized in that it is a reaction product obtained with the use of electrondonor General formula I, where R

methyl, R1and R2the same or different, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, neopentyl, isopentyl, phenyl, benzyl or cyclohexyl.

4. Component under item 1, characterized in that it is a reaction product obtained by using the polymer carrier, they

 

Same patents:
The invention relates to methods of producing stabilized polypropylene and can be used in the plastics industry

The invention relates to catalysts for (co)polymerization of olefins and method () polymerizatio olefins

The invention relates to catalysts suitable for the stereospecific polymerization of propylene, the way to obtain this solid substance and method of polymerization of propylene in the presence of this solid

The invention relates to a catalyst containing product ways, including:

a) processing an inert inorganic substrate to remove surface hydroxyl groups;

b) interactions treated in a similar manner to the substrate with a soluble hydrocarbon compound magnesium;

C) interaction of the product of stage b) with a modifying compound selected from the halides of silicon, boron, aluminum, alkylsilane and hexadecylamine, or mixtures thereof;

g) the interaction of the product of stage b) with a compound of vanadium structural formula V(O)S X'4-Swhere X1halogen and S is 0 or 1; the first compound of titanium with the structural formula Ti(OR2)nX2mwhere R2hydrocarbon radical, X2halogen, n is the target number from 1 to 4, and m is 1 or 0, or an integer from 1 to 3 provided that the sum of n and m is 4; a second compound of titanium with the structural formula TIX3p(OR3)qwhere R3hydrocarbon radical, X3halogen, R is an integer from 1 to 4 and q is 0 or an integer from 1 to 3 provided that the sum of p and q is 4, and these first and second titanium compounds are not identical

The invention relates to components of catalysts for the polymerization of olefins, the catalysts obtained them, and their use in polymerization of olefins such as ethylene, propylene and mixtures thereof

The invention relates to methods of producing vinyl polymers, particularly to a method of obtaining high molecular weight isotactic polyacene-1

The invention relates to the manufacture of catalysts, namely the production of catalysts of the Ziegler-Natta, which can be used for the synthesis of high molecular weight Homo - and copolymers-olefins, α-olefins and polar monomers, rubbers, in particular in the production of polypropylene

-olefins" target="_blank">

The invention relates to methods of producing olefin polymers (a name sometimes used to refer to both homopolymers and copolymers of olefins by polymerization (the term is sometimes used to refer to as homopolymerization and copolymerization) of olefins

The invention relates to the refining and petrochemical synthesis, in particular to a method of polymerization of olefin-containing raw material with obtaining polymetacrylate raw materials for the production of additives

The invention relates to Socialisticheskaya composition used for the polymerization of alpha-olefins by catalytic system comprising the above composition and method for the polymerization of alpha-olefins, in particular, to method stereospetsifichno propylene polymerization conducted in the presence of catalytic systems

The invention relates to methods of producing ultra-high molecular weight polyethylene (UHMWPE), i.e. polyethylene with srednevozrastnoe molecular weight of 1-6 million (characteristic viscosity in decaline at 135oWith 10-30 DL/g), high output, adjustable particle size and improved properties for processing

The invention relates to catalysts for (co)polymerization of olefins and method () polymerizatio olefins
Up!