US4408018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acetoacetate functionalized polymers and monomers useful for crosslinking formulations
Assignee: Rohm and Haas Co
•
Filing: 1982-10-29
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Granted: 1983-10-04
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Expires: 2002-10-29
Abstract
Abstract An acetoacetate moiety may be introduced into polymers and used via Michael Reaction for crosslinking with alpha, beta-unsaturated esters.
Inventors
- 👤 Benjamin Bartman
- 👤 Graham Swift
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:26
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/022; C08F8/00; C08G; C08G61/00; C08G61/12; C08F2800/00; C08F2800/20; C08F2810/00; C08F2810/20; C08G2261/00; C08G2261/10; C08G2261/13; C08G2261/135; C08G2261/30; C08G2261/33; C08G2261/334; C08G2261/35; C08G2261/354; C08G2261/40; C08G2261/42; C08G2261/70; C08G2261/75; C08G2261/76
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
86 words
A method for effecting the crosslinking of polymers comprising the steps of introducing into an acrylate polymer backbone a plurality of pendant acetoacetate moieties, mixing said polymer with a crosslinking quantity of at least one polyacrylate having at least two groups of the structure ##STR4## pendantly attached to an organic radical selected from the group consisting of alkyl, aryl, alkyl-aryl and polymeric radicals, and with a strong base catalyst effective to initiate a Michael Reaction and effecting reaction between said pendant acetoacetate moieties and said polyacrylate.
Claim 2
Independent Claim
86 words
A method for effecting the crosslinking of polymers comprising the steps of introducing into an acrylate polymer backbone a plurality of pendant acetoacetate moieties, mixing said polymer with a crosslinking quantity of at least one polyacrylate having at least two groups of the structure ##STR4## pendantly attached to an organic radical selected from the group consisting of alkyl, aryl, alkyl-aryl and polymeric radicals, and with a strong base catalyst effective to initiate a Michael Reaction and effecting reaction between said pendant acetoacetate moieties and said polyacrylate.
Claim 3
Dependent Claim
47 words
A method in accordance with claim 1 wherein said polymer is an acrylate polymer and in which said acetoacetate moiety is introduced by copolymerization of a member of the group consisting of HEMA acetoacetate and HEA acetoacetate during the polymerization of the monomers forming said acrylate polymer.
Claim 4
Dependent Claim
13 words
A method in accordance with claim 2 wherein said polyacrylate is trimethylolpropane triacrylate.
Claim 5
Dependent Claim
30 words
A method in accordance with claim 3 wherein the catalyst is selected from the group consisting of an alcohol solution of tertrabutyl-ammonium hydroxide and an alcohol solution of potassium hydroxide.
Claim 6
Dependent Claim
11 words
A crosslinked polymer when produced by the method of claim 1.
Claim 7
Dependent Claim
11 words
A crosslinked polymer when produced by the method of claim 2.
Claim 8
Dependent Claim
11 words
A crosslinked polymer when produced by the method of claim 3.
Claim 9
Dependent Claim
11 words
A crosslinked polymer when produced by the method of claim 4.
Claim 10
Dependent Claim
16 words
A crosslinked polymer in accordance with claim 2 wherein said acrylate polymer is a styrene-acrylate copolymer.
References Cited (Backward Citations)
US2101107A
Cited
US3201373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |