US4711940A
Expired / Lapsed
US
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Process for preparing catalyst component for polymerization of olefins
Assignee: Tonen General Sekiyu KK
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Filing: 1986-10-29
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Granted: 1987-12-08
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Expires: 2006-10-29
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
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:01
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
136 words
A process for the polymerization of olefins which comprises polymerizing one or more olefins in the presence of a catalyst comprising (a) a titanium containing catalyst component obtained by contacting (i) Component A, a magnesium dialkoxide soluble in inert solvents represented by the formula Mg(OR) (OR 1 ) where R and R 1 are the same or different branched alkyls or alkyl substituted cycloalkyls, each R and R 1 having 7 or more carbon atoms. (ii) Component B, a silicon compound having a hydrogen-silicon bond. (iii) Component C, an electron donor compound, and (iiii) a titanium compound with the proviso that Component A, B and C are contacted with one another in an inert solvent prior to contact with the titanium compound and (b) and organo metal compound of Groups I-III metals of the Periodic Table.
Claim 2
Dependent Claim
136 words
A process for the polymerization of olefins which comprises polymerizing one or more olefins in the presence of a catalyst comprising (a) a titanium containing catalyst component obtained by contacting (i) Component A, a magnesium dialkoxide soluble in inert solvents represented by the formula Mg(OR) (OR 1 ) where R and R 1 are the same or different branched alkyls or alkyl substituted cycloalkyls, each R and R 1 having 7 or more carbon atoms. (ii) Component B, a silicon compound having a hydrogen-silicon bond. (iii) Component C, an electron donor compound, and (iiii) a titanium compound with the proviso that Component A, B and C are contacted with one another in an inert solvent prior to contact with the titanium compound and (b) and organo metal compound of Groups I-III metals of the Periodic Table.
Claim 3
Dependent Claim
11 words
The process in accordance with claim 1 wherein propylene is homopolymerized.
Claim 4
Dependent Claim
14 words
The process in accordance with claim 1 wherein propylene is randomly copolymerized with ethylene.
Claim 5
Dependent Claim
20 words
The process in accordance with claim 1 wherein propylene is block polymerized with ethyene to form an ethylene-propylene block copolymer.
Claim 6
Dependent Claim
18 words
The process in accordance with claim 1 wherein the silicon compound is selected from trichlorosilane, methyldichlorosilane and dimethylchlorosilane.
Claim 7
Dependent Claim
25 words
The process in accordance with claim 1 wherein the magnesium alkoxide is selected from magnesium di-2-ethylhexyloxide, magnesium di-1-methylhexyloxide, magnesium di-1-ethylpentyloxide, magnesium di-1-methylheptyloxide and magnesium di-1-ethylhexyloxide.
Claim 8
Dependent Claim
31 words
The process in accordance with claim 1 wherein the electron donor compound is selected from ethyl benzoate, diisobutylpthalate, benzoic acid anhydride, benzoyl chloride, diethylpthalate, pthalic acid-di-chloride, pthalic acid anhydride and n-butylmaleate.
Claim 9
Dependent Claim
22 words
The process in accordance with claim 1 wherein Component A is magnesium di-2-ethylhexyloxide, Component B is trichlorosilane and Component C is ethylbenzoate.
Claim 10
Dependent Claim
14 words
The process in accordance with claim 1 wherein the organo metal compound is triethylaluminum.
Claim 11
Dependent Claim
17 words
The process in accordance with claim 1 further comprising an electron donor compound and/or an organosilicon compound.
Claim 12
Dependent Claim
19 words
The process in accordance with claim 10 wherein the further electron donor is selected from ethyl benzoate and ethyl-p-anisate.
Claim 13
Dependent Claim
20 words
The process in accordance with claim 10 wherein the further electron donor compound is a sterically hindered electron donor compound.
Claim 14
Dependent Claim
15 words
The process in accordance with claim 12 wherein the further electron donor compound is 2,2.6,6,-tetramethylpiperidine.
Claim 15
Dependent Claim
13 words
THe process in accordance with claim 10 wherein the organosilicon compound is phenyltriethoxysilane.
References Cited (Backward Citations)
JPS5792009A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1990-12-07 | 1991-06-08 | 1991-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-07 | 1995-06-08 | 1995-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-07 | 1999-06-08 | 1999-12-08 | $7700.00 | Window Closed / Lapsed |