Claims
- 1. A polymerization process which comprises polymerizing or copolymerizing olefins in the presence of an olefin polymerization catalyst formed from
- (A) a solid titanium component which contains magnesium, titanium, halogen and an electron donor as the essential components prepared by contacting of a magnesium compound with a titanium compound and an electron donor, said magnesium compound or a complex of said magnesium compound with said electron donor being reacted with the titanium compound in the liquid phase, or said magnesium compound having no reducibility and said titanium compound, both in liquid form, being reacted in the presence of said electron donor;
- (B) an organoaluminum compound; and
- (C) an organosilicon compound represented by the following formula
- SiR.sup.21 R.sup.22.sub.m (OR.sup.23).sub.3-m
- wherein R.sup.21 represents a cyclopentyl group, a cyclopentyl group substituted by 1 to 4 alkyl groups having 1 to 4 carbon atoms, an alkyl group having 2 to 4 carbon atoms substituted by a cyclopentyl group or a cyclopentyl group substituted by 1 to 4 alkyl groups having 1 to 4 carbon atoms, a cyclopentenyl group, a cyclopentenyl group substituted by 1 to 4 alkyl groups having 1 to 4 carbon atoms, a cyclopentadienyl group, a cyclopentadienyl group substituted by 1 to 4 alkyl groups having 1 to 4 carbon atoms, an indenyl group, an indenyl group substituted by 1 to 4 alkyl groups having 1 to 4 carbon atoms, an indanyl group, an indanyl group substituted by 1 to 4 alkyl groups having 1 to 4 carbon atoms, a tetrahydroindenyl group, a tetrahydroindenyl group substituted by 1 to 4 alkyl groups having 1 to 4 carbon atoms, a fluorenyl group or a fluorenyl group substituted by 1 to 4 alkyl groups having 1 to 4 carbon atoms;
- R.sup.22 to R.sup.23 are identical or different and each represents a hydrocarbon group; and
- O.ltoreq.m<3.
- 2. The process of claim 1 in which the solid titanium catalyst component (A) is obtained by using a titanium compound of the following formula
- Ti(OR).sub.g X.sub.4-g
- wherein R represents a hydrocarbon group, X represents a halogen atom and g is a number of 0 to 4.
- 3. The process of claim 1 wherein the olefins to be polymerized or copolymerized are alpha-olefins having 2 to 20 carbon atoms.
- 4. The process of claim 1 in which the olefins to be polymerized or copolymerized are propylene, 1-butene or a monomeric mixture of the alpha-olefins containing more than 50% by weight of propylene and/or 1-butene.
- 5. The process of claim 1 in which the olefins to be copolymerized are a mixture of propylene with 7 to 50 mole % of an alpha-olefin having 2 or 4-20 carbon atoms.
Priority Claims (3)
Number |
Date |
Country |
Kind |
63-149503 |
Jun 1988 |
JPX |
|
1-014595 |
Jan 1989 |
JPX |
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1-050871 |
Mar 1989 |
JPX |
|
Parent Case Info
This application is a continuation of application Ser. No. 08/097,908, filed Jul. 29, 1993; now abandoned which is a continuation of application Ser. No. 07/607,361, filed Oct. 31, 1990; now abandoned which is a division of application Ser. No. 07/366,547, filed Jun. 15, 1989, now U.S. Pat. No. 4,998,479.
US Referenced Citations (5)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0115195 |
Aug 1984 |
EPX |
0322798 |
May 1989 |
EPX |
61-78803 |
Apr 1986 |
JPX |
Non-Patent Literature Citations (1)
Entry |
Patent Abstracts of Japan, vol. 11, No. 101 (C-413)[2548], 31 Mar. 1987; & JPA-61 252 218 (Mitsubishi) Oct. 11, 1986, abstract. |
Divisions (1)
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Number |
Date |
Country |
Parent |
366547 |
Jun 1989 |
|
Continuations (2)
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Number |
Date |
Country |
Parent |
97908 |
Jul 1993 |
|
Parent |
607361 |
Oct 1990 |
|