US4444840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calendered AES film
Assignee: Polycast Technology Corp
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Filing: 1982-08-09
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Granted: 1984-04-24
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Expires: 2002-08-09
Abstract
Abstract Calendered AES film containing 25-40% rubber; usually pigmented.
Inventors
- 👤 John M. Wefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:51
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/30; B32B27/06; B32B27/08; B32B27/18; B32B27/20; B32B27/302; B32B27/32; B32B2307/00; B32B2307/70; B32B2307/718; B32B2309/00; B32B2309/08; B32B2309/10; B32B2309/105; B32B2323/00; B32B2323/16; B32B2355/00; B32B2355/02; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/269; Y10T428/31504; Y10T428/31826; Y10T428/3183; Y10T428/31855; Y10T428/31931; Y10T428/31935
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
87 words
A laminate comprising a thermoplastic substrate having on at least one surface a layer of calendered film having a thickness of from 4 to 50 mils, comprising a graft copolymer composition of resin forming material on an olefin copolymer rubber spine, the rubber content of the composition being from 25% to 40% by weight, and the composition containing 5% to 20% by weight of pigment, the said resin forming material being styrene and acrylonitrile and the said olefin copolymer rubber being ethylene-propylene copolymer or ethylene-propylene-non-conjugated diene terpolymer.
Claim 2
Dependent Claim
87 words
A laminate comprising a thermoplastic substrate having on at least one surface a layer of calendered film having a thickness of from 4 to 50 mils, comprising a graft copolymer composition of resin forming material on an olefin copolymer rubber spine, the rubber content of the composition being from 25% to 40% by weight, and the composition containing 5% to 20% by weight of pigment, the said resin forming material being styrene and acrylonitrile and the said olefin copolymer rubber being ethylene-propylene copolymer or ethylene-propylene-non-conjugated diene terpolymer.
Claim 3
Dependent Claim
20 words
A laminate as in claim 1 in which the composition contains 5% to 20% by weight of titanium dioxide pigment.
Claim 4
Dependent Claim
18 words
A laminate as in claim 1 in which the substrate of the said laminate is an ABS composition.
References Cited (Backward Citations)
US3489821A
Cited
US4202948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-24 | 1987-10-24 | 1988-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-24 | 1991-10-24 | 1992-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-24 | 1995-10-24 | 1996-04-24 | $7700.00 | Window Closed / Lapsed |