# US 5,347,025 A · Catalyst for polymerization of vinyl compound

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- Number: US 5,347,025 A
- Document ID: US5347025A
- Status: Granted
- Kind: A
- Application number: 08/117,290
- Filed: 1993-09-07
- Granted: 1994-09-13
- Earliest claimed: 1992-09-09
- Assignees: Tosoh Corporation
- Inventors: Satoru Yamada; Akihiro Yano
- Web page: https://patentgrep.com/patent/US5347025A

## CPC

- C07F 17/00: Metallocenes
- C08F 10/00: Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F 4/65912: {in combination with an organoaluminium compound}
- C08F 4/65922: {containing at least two cyclopentadienyl rings, fused or not}
- Y10S 526/943: Polymerization with metallocene catalysts
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A novel catalyst for polymerization of a vinyl compound is provided which comprises, as a catalyst component (A), an organometal complex represented by General Formula (1) below: ##STR1## where Cp.sup.1 and Cp.sup.2 are independently a substituted or unsubstituted cyclopentadienyl group; R.sup.1 is a group selected from alkylene groups or arylalkylene groups having 1 to 20 carbons, dialkylsillylene groups, dialkylgermanylene groups, alkylphosphinediyl groups, or alkylimino groups and R.sup.1 crosslinking Cp.sup.1 and Cp.sup.2 together; m is 0 or 1; M is titanium, zirconium, or hafnium; and R.sup.2, R.sup.3, and R.sup.4 are independently hydrogen hydrocarbon group of 1 to 12 carbons, an alkoxy group, or an aryloxy group, and a catalyst component (B) represented by the general formula (2) or (3) ##STR2## where n is an integer of from 4 to 60, and R.sup.5 is a hydrocarbon group. A process for producing a vinyl compound polymer which employs the catalyst defined above is also provided.

## Claims

### Claim 1

An organometal complex represented by General Formula (1) below: ##STR8## where Cp.sup.1 and Cp.sup.2 are independently a cyclopentadienyl group; R.sup.1 is a group selected from alkylene groups or arylalkylene groups having 1 to 20 carbons, dialkylsillylene groups, dialkylgermanylene groups, alkylphosphinediYl groups, or alkylimino groups, and R.sup.1 crosslinking Cp.sup.2 together; m is 0 or 1; M is titanium, zirconium, or hafnium; and R.sup.2, R.sup.3, and R.sup.4 are independently hydrogen, a hydrocarbon group of 1 to 12 carbons, an alkoxy group, or an aryloxy group.

### Claim 2 (depends on 1)

A organometal complex according to claim 1, wherein M is titanium, R.sup.2 is phenyl, and R.sup.3 and R.sup.4 are respectively hydrogen.

### Claim 3 (depends on 1)

A organometal complex according to claim 1, wherein M is titanium, R.sup.3 is methyl, and R.sup.2 and R.sup.4 are respectively hydrogen.