US4299979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerizable monoethylenic carboxylic acids which decarboxylate on heating
Assignee: DeSoto Inc
•
Filing: 1979-06-21
•
Granted: 1981-11-10
•
Expires: 1999-06-21
Abstract
Abstract Carboxy functional addition-polymerizable monoethylenically unsaturated monomers and their volatile amine salts are disclosed, along with addition copolymers useful in coatings prepared therefrom. Both monomers and polymers decompose on heating. The monomers are bisamides comprised of a monoethylenically unsaturated amide and malonic acid half amide joined through their amide functionalities by a divalent saturated aliphatic group having 1-4 carbon atoms.
Inventors
- 👤 Edward J. Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:52
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/60
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
78 words
An addition polymerizable monoethylenically unsaturated carboxylic acid monomer which decarboxylates on heating and has the structural formula: ##STR14## wherein R is a polymerizable monoethylenically unsaturated organic radical; R 1 and R 2 are selected from the group consisting of hydrogen and C 1 -C 4 alkyl; R 3 is selected from the group consisting of C 1 -C 4 divalent aliphatic groups; and X + is selected from the group consisting of the proton and protonated volatile amines.
Claim 2
Dependent Claim
78 words
An addition polymerizable monoethylenically unsaturated carboxylic acid monomer which decarboxylates on heating and has the structural formula: ##STR14## wherein R is a polymerizable monoethylenically unsaturated organic radical; R 1 and R 2 are selected from the group consisting of hydrogen and C 1 -C 4 alkyl; R 3 is selected from the group consisting of C 1 -C 4 divalent aliphatic groups; and X + is selected from the group consisting of the proton and protonated volatile amines.
Claim 3
Dependent Claim
40 words
The addition polymerizable carboxylic acid monomer according to claim 1, wherein R is selected from the group consisting of H 2 C═CH-- and ##STR15## R 3 is --CH 2 --, and both R 1 and R 2 are the same.
Claim 4
Dependent Claim
74 words
An addition polymerizable monoethylenically unsaturated carboxylic acid which decarboxylates on heating having the formula: ##STR16## wherein R is selected from the group consisting of H 2 C═CH-- and ##STR17## R 1 and R 2 are selected from the group consisting of hydrogen and C 1 -C 4 alkyl, and both R 1 and R 2 are the same; and X + is selected from the group consisting of the proton and protonated volatile amines.
Claim 5
Dependent Claim
74 words
An addition polymerizable monoethylenically unsaturated carboxylic acid which decarboxylates on heating having the formula: ##STR16## wherein R is selected from the group consisting of H 2 C═CH-- and ##STR17## R 1 and R 2 are selected from the group consisting of hydrogen and C 1 -C 4 alkyl, and both R 1 and R 2 are the same; and X + is selected from the group consisting of the proton and protonated volatile amines.
Claim 6
Dependent Claim
25 words
The addition polymerizable carboxylic acid monomer in accordance with claim 3, wherein R 1 and R 2 are hydrogen and X + is the proton.
Claim 7
Dependent Claim
24 words
The addition polymerizable carboxylic acid monomer in accordance with claim 3 which is selected from acrylamidomethylmalonamic acid and its salts with a volatile amine.
References Cited (Backward Citations)
US2699427A
Cited
US2777772A
Cited
US3056832A
Cited
US3178385A
Cited
US3470079A
Cited
US3536525A
Cited
US3751451A
Cited
US3652671A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |