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US4400531A
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4-Vinyl-2-methylene butanedioic acid compounds
Assignee: Procter and Gamble Co
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Filing: 1981-08-07
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Granted: 1983-08-23
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Expires: 2001-08-07
Abstract
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.
Inventors
- 👤 Rodney D. Bush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:00
CPC Classifications
C; C08; C08F; C08F122/00; C08F122/10; C08F122/26; C07; C07C; C07C235/00; C07C69/00; C07C69/52; C07C69/593; C08F218/00; C08F218/02; C08F218/04; C08F218/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
33 words
A compound having a formula selected from the group consisting of ##STR18## wherein R is selected from the group consisting of H, C 1 -C 18 alkyl, and C 6 -C 18 aryl.
Claim 2
Dependent Claim
33 words
A compound having a formula selected from the group consisting of ##STR18## wherein R is selected from the group consisting of H, C 1 -C 18 alkyl, and C 6 -C 18 aryl.
Claim 3
Dependent Claim
10 words
A compound according to claim 1 having the formula ##STR19##
Claim 4
Dependent Claim
22 words
A compound according to claim 2 wherein R is selected from the group consisting of H and C 1 -C 6 alkyl.
Claim 5
Dependent Claim
19 words
A compound according to claim 3 wherein R is selected from the group consisting of H, methyl and butyl.
References Cited (Backward Citations)
US2153987A
Cited
US2254382A
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US3165486A
Cited
US3280067A
Cited
US3784578A
Cited
US3773810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-22 | 1987-02-21 | 1987-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-22 | 1991-02-21 | 1991-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-22 | 1995-02-21 | 1995-08-23 | $7700.00 | Window Closed / Lapsed |