# US 4,396,750 A · Process for synthesizing silylated polyalkenamers

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- Number: US 4,396,750 A
- Document ID: US4396750A
- Status: Granted
- Kind: A
- Application number: 06/266,878
- Filed: 1981-05-26
- Granted: 1983-08-02
- Earliest claimed: 1981-05-26
- Assignees: The United States of America as represented by the Secretary of the Navy
- Inventors: Thomas J. Katz; Michael A. Shippey
- Web page: https://patentgrep.com/patent/US4396750A

## CPC

- C08G 61/08: of carbocyclic compounds containing one or more carbon-to-carbon double bonds in the ring
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

## Abstract

A process for polymerizing cycloalkenes into polyalkenamers is described wherein trisubstituted silyl groups are attached to the cycloalkenes. The silyl groups thus attached do not act as a poison to the polymerization process. Trimethylsilyl group can be substituted by other desired functional groups after the polymerization.

## Claims

### Claim 1

A polymer, poly(1-trimethylsilyl-but-1-ene-1,4 diyl) belonging to the group given by the formula ##STR4## where n is the number of 1-trimethylsilylcyclobutene molecules used in the polymerization process for the number molecular weight of said polymer to be between 17,000 to 78,000.

### Claim 2 (depends on 1)

The polymer of claim 1 which has a viscosity in toluene at 29.5.degree. C. to be at least 2.14 dL/gm.

### Claim 3 (depends on 1)

The polymer of claim 1 which is soluble in benzene, toluene, tetrahydrofuran, methylene chloride and chloroform.

### Claim 4 (depends on 1)

The polymer of claim 1 which is insoluble in methanol.