Patent US3738971A successfully refreshed from Google Patents.
US3738971A
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US
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Interpolymers of acrylates,unsaturated acids and hydroxylated amides as pressure-sensitive adhesives
Assignee: Goodrich Corp
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Filing: 1971-09-07
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Granted: 1973-06-12
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Expires: 1991-09-07
Abstract
Abstract PRESSURE-SENSITIVE ADHESIVES HAVING AN EXCELLENT BALANCE OF TACK AND STRENGTH ARE PREPARED BY POLYMERIZING TOGETHER (1) A MAJOR AMOUNT OF AN ALKYL ACRYLATE WHEREIN THE ALKYL GROUP CONTAINS AT LEAST 6 CARBON ATOMS, (2) A MINOR AMOUNT OF AN A,B-OLEFINICALLY UNSATURATED CARBOXYLIC ACID, AND (3) A SMALL AMOUNT OF AN A,B-OLEFINICALLY UNSATURATED HYDROXYLATED AMIDE AND (4) OPTIONALLY AN ALKYL ACRYLATE WHEREIN THE ALKYL GROUP CONTAINS 4 TO 5 CARBON ATOMS. THE PRESSURE-SENSITIVE ADHESIVES ARE PARTICULARLY USEFUL AS TRANSPARENT TAPE ADHESIVES.
Inventors
- 👤 A Coffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:58
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/385; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1808; C09J2301/00; C09J2301/30; C09J2301/302
Claims Analysis
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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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |