# US 4,400,531 A · 4-Vinyl-2-methylene butanedioic acid compounds

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 4,400,531 A
- Document ID: US4400531A
- Status: Granted
- Kind: A
- Application number: 06/290,907
- Filed: 1981-08-07
- Granted: 1983-08-23
- Earliest claimed: 1981-08-07
- Assignees: The Procter & Gamble Company
- Inventors: Rodney D. Bush
- Web page: https://patentgrep.com/patent/US4400531A

## CPC

- C08F 122/26: of unsaturated alcohols {(C08F122/1006 takes precedence)}
- C07C 69/593: Dicarboxylic acid esters having only one carbon-to-carbon double bond
- C07C 235/00: Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms
- C08F 218/08: Vinyl acetate
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS

## Abstract

4-Vinyl-2-methylenebutanedioic acid and its esters, as well as amide and nitrile analogs of these compounds, are disclosed. These compounds are capable of undergoing a rapid free radical cyclopolymerization reaction. The compounds, themselves, may be used as film-formers (for example, in paints or plastics) or may be used as groups pendant from a backbone, especially a low molecular weight backbone, to form other, more complex film-forming polymer precursor materials.

## Claims

### Claim 1

A compound having a formula selected from the group consisting of ##STR18## wherein R is selected from the group consisting of H, C.sub.1 -C.sub.18 alkyl, and C.sub.6 -C.sub.18 aryl.

### Claim 2 (depends on 1)

A compound according to claim 1 having the formula ##STR19##

### Claim 3 (depends on 2)

A compound according to claim 2 wherein R is selected from the group consisting of H and C.sub.1 -C.sub.6 alkyl.

### Claim 4 (depends on 3)

A compound according to claim 3 wherein R is selected from the group consisting of H, methyl and butyl.