Patent US3765928A successfully refreshed from Google Patents.
US3765928A
Expired / Lapsed
US
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Ethylene/alpha, beta-unsaturated acid interpolymers as adhesive systems for polyurethanes
Assignee: Union Carbide Corp
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Filing: 1971-03-31
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Granted: 1973-10-16
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Expires: 1991-03-31
Abstract
Abstract Laminates are prepared by bonding a layer or coating of ethylene/alpha,beta-olefinically unsaturated acid interpolymer to a substrate, and thereafter reacting a foamable mixture comprising polyisocyanate and polyol to produce cellular polyurethane such that at least a portion of said polyurethane becomes bonded to said substrate through said interpolymer during the foaming reaction.
Inventors
- 👤 W Smarook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:04
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; B; B32; B32B; B32B15/00; B32B15/04; B32B15/046; B32B15/08; B32B15/082; B32B27/00; B32B27/06; B32B27/065; B32B27/30; B32B5/00; B32B5/18; B32B5/20; B32B7/00; B32B7/04; B32B7/10; B05; B05D; B05D7/00; B05D7/50; B05D7/52; B05D7/54; B05D7/544; B32B2255/00; B32B2255/06; B32B2255/26; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2307/00; B32B2307/10; B32B2307/102; B32B2307/30; B32B2307/304; B32B2439/00; B32B2439/40; B32B2439/62; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
22 words
The method of claim 1 wherein said interpolymer contains from about 60 to about 82 weight per cent of ethylene polymerized therein.
Claim 2
Dependent Claim
61 words
The method of claim 1 wherein said interpolymer contains up to about 35 weight per cent of a component of the group consisting of the C1-C12 alkanol esters of acids of the group consisting of acrylic, methacrylic, itaconic, citraconic, crotonic, maleic, and fumaric acids; vinyl formate; vinyl acetate; vinyl propionate; vinyl butyrate; vinyl chloride; vinylidene chloride; acrylamide; N-vinylacrylamide, N-vinylacetamide; and N-methyl-N-vinylacetamide.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein said alpha, beta-olefinically unsaturated carboxylic acid is acrylic acid.
Claim 4
Dependent Claim
14 words
The method of claim 1 wherein said alpha,beta-olefinically unsaturated carboxylic acid is methacrylic acid.
Claim 5
Dependent Claim
17 words
The method of claim 1 wherein said substrate is of the group consisting of aluminum and steel.
Claim 6
Independent Claim
160 words
A method for bonding polyurethane foam to a substrate which comprises: i. electrodepositing a coating of inter-polymer onto said substrate from an electrolytic solution of an interpolymer comprising from about 45 to about 98.5 per cent by weight of ethylene and from about 1.5 to about 50 per cent by weight of the salt of an alpha,beta-olefinically unsaturated carboxylic acid of 3 to 15 carbon atoms polymerized therein, said salt being formed by neutralizing carboxyl groups of said acid with an alkaline compound of the group consisting of Group IA metal hydroxide, Group IIA metal hydroxide, amines, ammonia, and ammonium hydroxide; ii. permitting said coating of iNterpolymer to dry; iii. and thereafter reacting a foamable mixture comprising polyisocyanate, polyol, and blowing agent to produce cellular polyurethane, the reaction of said foamable mixture being effected in contact with said coating of interpolymer so that said cellular polyurethane becomes bonded to said substrate through said coating of interpolymer during the foaming reaction.
Claim 7
Dependent Claim
12 words
The method of claim 7 wherein said alkaline compound is ammonium hydroxide.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |