US4142014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminate carrying a discrete layer of metal salts of long chain alkyl vinyl ether-maleic anhydride copolymers
Assignee: ISP Investments LLC
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Filing: 1973-04-06
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Granted: 1979-02-27
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Expires: 1993-04-06
Abstract
Abstract Metal salts of hydrolyzed long chain alkyl vinyl ether-maleic anhydride copolymers and thermally resistant release coating compositions comprising solutions or emulsions of said salts.
Inventors
- 👤 Thomas S. Mestetsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:41
CPC Classifications
C; C08; C08F; C08F8/00; Y; Y10; Y10T; Y10T428/00; Y10T428/14; Y10T428/1438; Y10T428/28; Y10T428/2839; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31855; Y10T428/31942; Y10T428/31949; Y10T428/31957
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
83 words
A laminated product comprising a non-absorptive substrate, at least one surface of which carries a discrete, continuous layer deposited from a surface release composition comprising an organic solvent solution containing a metal salt of a hydrolyzed vinyl ether-maleic anhydride copolymer wherein alkyl contains 8-22 carbon atoms and the metal salt contains from 5 mole % to 350 mole % of the metal based on the copolymer; said layer being in contact with a second substantially non-absorptive surface from which it is readily releasable.
Claim 2
Dependent Claim
83 words
A laminated product comprising a non-absorptive substrate, at least one surface of which carries a discrete, continuous layer deposited from a surface release composition comprising an organic solvent solution containing a metal salt of a hydrolyzed vinyl ether-maleic anhydride copolymer wherein alkyl contains 8-22 carbon atoms and the metal salt contains from 5 mole % to 350 mole % of the metal based on the copolymer; said layer being in contact with a second substantially non-absorptive surface from which it is readily releasable.
Claim 3
Dependent Claim
16 words
The laminated product of claim 1 wherein the surface release composition additionally contains an emulsifying agent.
References Cited (Backward Citations)
US2047398A
Cited
US2894921A
Cited
US2876894A
Cited
US3436378A
Cited
US3637459A
Cited
US3765934A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-26 | 1982-08-28 | 1983-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-26 | 1986-08-28 | 1987-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-26 | 1990-08-28 | 1991-02-27 | $7700.00 | Window Closed / Lapsed |