US4301216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nylon/san laminates
Assignee: GE Chemicals Inc
•
Filing: 1979-08-27
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Granted: 1981-11-17
•
Expires: 1999-08-27
Abstract
Abstract Multi-layered composites and laminates comprising a layer of a polyamide resin and a layer of a carboxylated SAN copolymer resin. The composites and laminates exhibit excellent interlayer adhesion and are thermoformable.
Inventors
- 👤 Thomas S. Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:07
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/30; B32B27/302; B32B27/34; B32B2307/00; B32B2307/70; B32B2307/738; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T428/31743; Y10T428/3175
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
55 words
A composite structure comprising a layer of polyamide adjacent to and bonded to a layer of SAN copolymer resin, said SAN copolymer resin being copolymerized with from about 0.5 to about 5 wt. % of a compound selected from the group consisting of itaconic acid, citraconic acid, acrylic acid, maleic acid, maleic anhydride and acrylamide.
Claim 2
Dependent Claim
55 words
A composite structure comprising a layer of polyamide adjacent to and bonded to a layer of SAN copolymer resin, said SAN copolymer resin being copolymerized with from about 0.5 to about 5 wt. % of a compound selected from the group consisting of itaconic acid, citraconic acid, acrylic acid, maleic acid, maleic anhydride and acrylamide.
Claim 3
Dependent Claim
72 words
A composite structure comprising a layer of polyamide adjacent and bonded to a layer of SAN copolymer resin, said SAN copolymer resin being copolymerized with from 100 to 50 parts by weight of a copolymer of styrene, acrylonitrile and from 0.5 to 5 wt. % of a compound selected from the group consisting of itaconic acid, maleic anhydride and acrylamide and from 0 to 50 parts by weight of a compatible elastomer.
Claim 4
Dependent Claim
72 words
A composite structure comprising a layer of polyamide adjacent and bonded to a layer of SAN copolymer resin, said SAN copolymer resin being copolymerized with from 100 to 50 parts by weight of a copolymer of styrene, acrylonitrile and from 0.5 to 5 wt. % of a compound selected from the group consisting of itaconic acid, maleic anhydride and acrylamide and from 0 to 50 parts by weight of a compatible elastomer.
Claim 5
Dependent Claim
23 words
The composite structure of claim 2 wherein said styrene, said acrylonitrile and said compound are graft copolymerized in the presence of an elastomer.
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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) | 1984-11-16 | 1985-05-18 | 1985-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-16 | 1989-05-18 | 1989-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-16 | 1993-05-18 | 1993-11-17 | $7700.00 | Window Closed / Lapsed |