Claims
- 1. A solid catalyst for gaseous phase or slurry polymerization of .alpha.-olefins, said solid catalyst being formed by
- (i) providing a carrier comprising a porous inorganic oxide or organic compound having a particle size of 20 to 200 .mu.m;
- (ii) depositing a compound of a transition metal and an aluminoxane compound onto said carrier to produce a solid catalyst component having a particle size of 20 to 200 .mu.m
- wherein said compound of a transition metal is represented by the following formula (I)
- R.sub.k.sup.1 R.sub.l.sup.2 R.sub.m.sup.3 R.sub.n.sup.4 M (I)
- wherein
- R.sup.1 represents a cycloalkadienyl group,
- R.sup.2, R.sup.3 and R.sup.4 are identical or different and each represents a cycloalkadienyl group, an aryl group, an alkyl group, a cycloalkyl group, an aralkyl group, a halogen atom, a hydrogen atom or a group of the formula --OR.sup.a, --SR.sup.b or --NR.sub.2.sup.c in which each of R.sup.a, R.sup.b and R.sup.c represents an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group or an organic silyl group,
- M represents zirconium, titanium or hafnium
- k is 1, 2, 3 or 4,
- l, m and n are each 0, 1, 2 or 3, and
- k+l+m+n=4
- wherein said aluminoxane compound is represented by the following formula (II)-1 ##STR12## or by the following formula (III)-1 ##STR13## wherein R represents a hydrocarbon group, in formula (II)-1, a is 2 to 50, and in formula (III)-1, a is 4 to 52,
- wherein said transition metal of said compound of a transition metal is present in an amount of 0.003 to 3 mmol per gram of said carrier, and
- wherein said aluminum of said aluminoxane compound is present in an amount such that an atomic ratio of said aluminum to the transition metal of said compound of a transition metal is from 15 to 1000;
- (iii) prepolymerizing an .alpha.-olefin in an amount of 0.2 to 30 g/g of said solid catalyst component in the presence of said solid catalyst component to form a prepolymer having an intrinsic viscosity (.eta.), measured in decahydronaphthalene at 135.degree. C., of from 0.2 to 20 dl/g.
Priority Claims (4)
Number |
Date |
Country |
Kind |
61-198037 |
Aug 1986 |
JPX |
|
61-198038 |
Aug 1986 |
JPX |
|
61-203638 |
Sep 1986 |
JPX |
|
62-34591 |
Feb 1987 |
JPX |
|
Parent Case Info
This is a division of application Ser. No. 08/227,590 filed Apr. 14, 1994, now abandoned; which is a continuation of application Ser. No. 07/987,545, filed Dec. 7, 1992, now abandoned; which is a continuation of application Ser. No. 07/196,081 filed Apr. 19, 1988, now abandoned; which is the national phase entry of International Application No. PCT/JP87/00629, filed Aug. 26, 1987.
US Referenced Citations (23)
Foreign Referenced Citations (5)
Number |
Date |
Country |
220436 |
Feb 1959 |
AUX |
0129368 |
Dec 1984 |
EPX |
59-213706 |
Dec 1984 |
JPX |
1300734 |
Dec 1972 |
GBX |
2024832 |
Jan 1980 |
GBX |
Non-Patent Literature Citations (1)
Entry |
Matkovshii, et al., Polymer Science (USSR), vol. 16, No. 1 (1974), pp. 207-215. |
Divisions (1)
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Number |
Date |
Country |
Parent |
227590 |
Apr 1994 |
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Continuations (2)
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Number |
Date |
Country |
Parent |
987545 |
Dec 1992 |
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Parent |
196081 |
Apr 1988 |
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