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US4022743A
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Aqueous dispersions of vinyl acetate/polyacrylate ester of pentaerythritol/hydroxymethyl diacetone acrylamide copolymers having improved adhesion properties
Assignee: Shell USA Inc
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Filing: 1975-11-28
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Granted: 1977-05-10
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Expires: 1995-11-28
Abstract
Abstract Vinyl acetate based aqueous dispersion having improved wet adhesion properties are prepared by copolymerizing vinyl acetate with about 3 to about 10 percent by weight of a polyacrylate ester and about 0.5 to 3 percent by weight of hydroxymethyl diacetone acrylamide, said percentages being based on the total weight of the copolymer. Optionally, other monomers copolymerizable therewith can be included in the copolymer. Aqueous dispersions of this invention have utility as vehicles in protective coating formulations.
Inventors
- 👤 Ralph F. Patella
- 👤 Joseph A. Vona
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:33
CPC Classifications
C; C09; C09D; C09D131/00; C09D131/02; C09D131/04; C08; C08F; C08F218/00; C08F218/02; C08F218/04; C08F218/08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/04; C08K5/05; C08L; C08L31/00; C08L31/02; C08L31/04; C08L71/00; C08L71/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
41 words
An aqueous copolymer dispersion coating composition comprising a copolymer of vinyl acetate dispersed in water in the presence of an anionic or nonionic surfactant or mixture thereof wherein the copolymer contains by weight based on the total weight of the copolymer
Claim 2
Dependent Claim
41 words
An aqueous copolymer dispersion coating composition comprising a copolymer of vinyl acetate dispersed in water in the presence of an anionic or nonionic surfactant or mixture thereof wherein the copolymer contains by weight based on the total weight of the copolymer
Claim 3
Dependent Claim
75 words
5 to 70 percent vinyl acetate; 3 to 10 percent tri or tetraacrylate or methacrylate ester of pentaerythritol; 0.5 to 3 percent hydroxymethyl diacetone acrylamide; and 0 to 26.5 percent other monomer selected from the group consisting of alkyl acrylate or methacrylate esters wherein the alkyl group contains from 1 to 18 carbon atoms and mono- or dialkyl esters of polymerizable unsaturated dibasic acids wherein the alkyl group contains from 1 to 10 carbon atoms.
Claim 4
Dependent Claim
75 words
5 to 70 percent vinyl acetate; 3 to 10 percent tri or tetraacrylate or methacrylate ester of pentaerythritol; 0.5 to 3 percent hydroxymethyl diacetone acrylamide; and 0 to 26.5 percent other monomer selected from the group consisting of alkyl acrylate or methacrylate esters wherein the alkyl group contains from 1 to 18 carbon atoms and mono- or dialkyl esters of polymerizable unsaturated dibasic acids wherein the alkyl group contains from 1 to 10 carbon atoms.
Claim 5
Dependent Claim
23 words
The composition of claim 1 wherein the other monomer is an alkyl acrylte wherein the alkyl group contains 1 to 18 carbon atoms.
Claim 6
Dependent Claim
12 words
The composition of claim 2 wherein the other monomer is butyl acrylate.
Claim 7
Dependent Claim
25 words
The composition of claim 1 wherein the other monomer is a dialkyl maleate or fumarate wherein the alkyl group contains 1 to 10 carbon atoms.
Claim 8
Dependent Claim
12 words
The composition of claim 4 wherein the other monomer is dioctyl maleate.
Claim 9
Dependent Claim
12 words
The composition of claim 1 wherein the polyacrylate ester is pentaerythritol triacrylate.
Claim 10
Dependent Claim
30 words
The composition of claim 1 wherein the hydroxymethyl diacetone acrylamide is present in the amount of about 1.25 to about 2 weight percent based on the total weight of copolymer.
Claim 11
Dependent Claim
35 words
The composition of claim 1 wherein the tri or tetraacrylate or methacrylate ester of pentaerythritil is present in the amount of about 3.5 to about 7 weight percent based on the total weight of copolymer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |