EP0156512A1
Expired / Lapsed
EP
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Process for preparing catalyst component for polymerization of olefins
Assignee: Tonen General Sekiyu KK
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Filing: 1985-02-22
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Granted: —
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Expires: 2005-02-22
Abstract
Abstract A process for preparing a catalyst component for the polymerization of olefins which comprises the steps of contacting (a) a magnesium dialkoxide soluble in an inert solvent, (b) a silicon compound having the hydrogen-silicon bond, and (c) an electron donor compound with one another in the presence of an inert solvent, and contacting the resulting reaction product with (d) a titanium compound.
Inventors
- 👤 Tadashi Yamamoto
- 👤 Masafumi Imai
- 👤 Hiroyuki Furuhashi
- 👤 Hiroshi Ueno
- 👤 Naomi Inaba
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 19:55
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
72 words
A catalyst component comprising: (A) a titanium containing catalyst component obtained by contacting A) a magnesium compound, B) a silicon compound having a hydrogen-silicon bond, C) an electron donor compound, and D) a titanium compound characterized in that the Component A is a magnesium dialkoxide.soluble in an inert solvent and that Components A, B and C are contacted with one another in an inert solvent prior to contact with the titanium compound.
Claim 2
Dependent Claim
72 words
A catalyst component comprising: (A) a titanium containing catalyst component obtained by contacting A) a magnesium compound, B) a silicon compound having a hydrogen-silicon bond, C) an electron donor compound, and D) a titanium compound characterized in that the Component A is a magnesium dialkoxide.soluble in an inert solvent and that Components A, B and C are contacted with one another in an inert solvent prior to contact with the titanium compound.
Claim 3
Dependent Claim
23 words
The catalys component of claim 1 wherein the alkoxide groups of the magnesium dialkoxide have at least 7 carbon atoms and are branched.
Claim 4
Dependent Claim
24 words
The catalyst component of claim 2 wherein the magnesium alkoxide is selected from magnesium di-2-ethylhexyloxide, magnesium di-l-methylhexyloxide, magnesium di-l-ethylpentyloxide, magnesium di-1-methylheptyloxide, and magnesium di-l-ethylhexyloxide.
Claim 5
Dependent Claim
21 words
The catalyst component of any of claims 1 to 3 wherein the silicon compound is selected from trichlorosilane, methyldichlorosilane and dimethylchlorosilane.
Claim 6
Dependent Claim
34 words
The catalyst component of any of claims 1 to 4, wherein the electron donor compounds are selected from ethyl benzoate, diisobutylpthalate, benzoic acid anhydride, benzoyl chloride, diethylpthalate, pthalic acid-di-chloride, pthalic acid anhydride and n-butylmaleate.
Claim 7
Dependent Claim
20 words
The catalyst component of claim 1 wherein Component A is di-2-ethylhexyloxide, Component B is trichlorosilane and Component C is ethylbenzoate.
Claim 8
Dependent Claim
26 words
An olefin polymerization catalyst comprising the catalyst component of any of claims 1-6 and an organo metal compound of Groups I-III metals of the Periodic Table.
Claim 9
Dependent Claim
12 words
The olefin polymerization catalyst of claim 7 wherein the cocatalyst is triethylaluminum.
Claim 10
Dependent Claim
23 words
The olefin polymerization catalyst of claim 7 or claim 8 which is further combined with an electron donor compound and/or an organosilicon compound.
Claim 11
Dependent Claim
18 words
The olefin polymerization catalyst of claim 9 wherein the electron donor is selected from ethyl benzoate and ethyl-p-anisate.
Claim 12
Dependent Claim
19 words
The olefin polymerization catalyst of claim 9 wherein the electron donor compound is a sterically hindered electron donor compound.
Claim 13
Dependent Claim
14 words
The olefin polymerization catalyst of claim 11 wherein the electron donor compound is 2,2,6,6-tetramethylpiperidine.
Claim 14
Dependent Claim
14 words
The olefin polymerization catalyst of claim 9 wherein the organo silicon compound is phenyltriethoxysilane.
Claim 15
Dependent Claim
25 words
A process for the polymerization of olefins which comprises polymerizing one or more olefins in the presence of the catalyst of any of claims 7-13.
Claim 16
Dependent Claim
11 words
The process in accordance with claim 14 wherein propylene is homopolymerized.
Claim 17
Dependent Claim
14 words
The process in accordance with claim 14 wherein propylene is randomly copolymerized with ethylene.
Claim 18
Dependent Claim
20 words
The process in accordance with claim 14 wherein propylene is block polymerized with ethylene to form an ethylene-propylene block copolymer.
References Cited (Backward Citations)
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