US3760031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive compositions from epoxide and ethylene vinyl acetate copolymer having unsaturated carboxylic acid grafted thereto
Assignee: Asahi Kasei Corp
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Filing: 1972-01-14
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Granted: 1973-09-18
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Expires: 1992-01-14
Abstract
Abstract Adhesive compositions for effecting adhesion between an ethylene-vinyl acetate copolymer and a solid material comprising (A) a grafted product obtained by reacting an ethylene-vinyl acetate copolymer or a derivative thereof with a carboxylic acid or its anhydride having a conjugated double bond in the molecule and (B) a compound having epoxide group.
Inventors
- 👤 K Sato
- 👤 A Niki
- 👤 H Kitamura
- 👤 M Morimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:56
CPC Classifications
C; C09; C09J; C09J163/00; C08; C08F; C08F255/00; C08F255/02; C08F255/026; C08F263/00; C08F263/02; C08F263/04; C09J7/00; C09J7/10; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C09J2451/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
32 words
Adhesive compositions according to claim 1 wherein said carboxylic acid or its anhydride having a conjugated double bond is selected from the group consisting of maleic acid, maleic anhydride and acrylic acid.
Claim 2
Dependent Claim
23 words
Adhesive compositions according to claim 1 wherein said derivative of ethylene-vinyl acetate copolymer is selected from chlorinated, chlorosulfonated and sulfonated ethylene-vinyl acetate copolymers.
Claim 3
Dependent Claim
38 words
Adhesive compositions according to claim 1 wherein said compound having an epoxide group is selected from the group consisting of epichlorohydrin derivatives of bis-phenol A, epichlorohydrin derivatives of pentaerythritol, vinyl cyclohexane dioxide, butadiene oxide and divinyl benzene dioxides.
Claim 4
Dependent Claim
13 words
Adhesive compositions according to claim 1, wherein said carboxylic acid is maleic acid.
Claim 5
Dependent Claim
13 words
Adhesive compositions according to claim 1, wherein said carboxylic acid is maleic anhydride.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |