Patent EP0045976A2 successfully refreshed from Google Patents.
EP0045976A2
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Components and catalysts for the polymerization of olefins
Assignee: Basell Technology Co BV
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Filing: 1981-08-13
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Granted: —
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Expires: 2001-08-13
Abstract
Abstract Catalysts for the polymerization of alpha-olefins which comprise the reaction product of: a) an Al-alkyl compound; b) a silicon compound containing at least a Si-OR or Si-OCOR or Si-NR 2 bond, R being a hydrocarbyl radical; c) a solid comprising as essential support, a Mg dihalide in active form and supported therein a Ti halide or a halo-Ti-aicoholate and a particular type of electron donor compound.
Inventors
- 👤 Sandro Parodi
- 👤 Roberto Nocci
- 👤 Umberto Dr. Giannini
- 👤 Pier Camillo Dr. Barbé
- 👤 Umberto Scatà
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 08:53
CPC Classifications
C; C08; C08F; C08F10/00; C08F4/00; C08F4/02; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
178 words
1) A solid component to be used in combination with an Al-Alkyl compound and a silicon compound containing one or more Si-OR, Si-OCOR and Si-NR2 bonds (R being a hydrocarbyl radical) to form catalysts for the polymerization of alpha olefins comprising an anhydrous Mg dihalide in active form, as essential support, and supported on said Mg dihalide a Ti-halide or Ti-haloalcoholate and an electron-donor compound selected from the following groups of compounds: 1.1 Mono and diesters of aromatic bicarboxylic acids having the COOH groups inortho position, wherein the R hydrocarbyl radicals of the COOR groups contain less than 3 carbon atoms and at least one of said radicals contains 2 carbon atoms. 1.2 Esters of saturated and unsaturated carboxylic acids of formula RCOOR' wherein the R hydrocarbyl radical is either a saturated or unsaturated branched radical containing from 3 to 20 carbon atoms or an arylalkyl radical with 7 to 20 carbon atoms or an aryl radical with 3 to 20 carbon atoms and in which the R' is a hydrocarbyl radical with less than 3 carbon atoms.
Claim 2
Dependent Claim
178 words
1) A solid component to be used in combination with an Al-Alkyl compound and a silicon compound containing one or more Si-OR, Si-OCOR and Si-NR2 bonds (R being a hydrocarbyl radical) to form catalysts for the polymerization of alpha olefins comprising an anhydrous Mg dihalide in active form, as essential support, and supported on said Mg dihalide a Ti-halide or Ti-haloalcoholate and an electron-donor compound selected from the following groups of compounds: 1.1 Mono and diesters of aromatic bicarboxylic acids having the COOH groups inortho position, wherein the R hydrocarbyl radicals of the COOR groups contain less than 3 carbon atoms and at least one of said radicals contains 2 carbon atoms. 1.2 Esters of saturated and unsaturated carboxylic acids of formula RCOOR' wherein the R hydrocarbyl radical is either a saturated or unsaturated branched radical containing from 3 to 20 carbon atoms or an arylalkyl radical with 7 to 20 carbon atoms or an aryl radical with 3 to 20 carbon atoms and in which the R' is a hydrocarbyl radical with less than 3 carbon atoms.
Claim 3
Dependent Claim
41 words
2) A solid component as defined in claim 1) in which the Mg dihalide is Mg dichloride and Mg dibromide; the Ti halide is a Ti-tetrahalide and the electron donor compound is diethylphthalate, methyl and ethylpiva- late, methyl and ethyl methacrylate.
Claim 4
Dependent Claim
78 words
3) Catalysts for the polymerization of alpha olefins comprising the product of reaction of the following components: a) an Al-trialkyl or an Al-alkyl compound containing 2 or more Al atoms linked to each other through an oxygen or nitrogen atom or through S0 4 or SO 3 groups; b) a silicon compound containing one or more Si-OR, SiOCOR or Si-NR 2 bond, R being a hydrocarbyl radical; c) a solid component as defined in claims 1) to 3).
Claim 5
Dependent Claim
26 words
4) Catalysts as defined in claim 3)in which the silicon compound of component b) is a.phenyl trialkoxysilane or a diphenyldialkoxysilane or an alkyl di- or trialkoxysilane.
Claim 6
Dependent Claim
20 words
5) Catalysts as defined in claim 4) in which component c) is the solid component as defined in claim 2).
Claim 7
Dependent Claim
71 words
6) Process for the polymerization of alpha olefins CH 2 = CHR in which R is an alkyl radical with 1 to 4 C or an aryl radical and mixtures of said olefins with ethylene, characterized in that the polymerization process is carried out in liquid phase in presence or not of an inert hydrocarbon solvent or in gas phase in presence of a catalyst as defined in claims 3)to 5).
Claim 8
Dependent Claim
12 words
7) Polymers of alpha olefins obtained with the process of claim 6).
References Cited (Backward Citations)
No citation records indexed.
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