US4148842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blends of a polycarbonate resin and interpolymer modifier
Assignee: General Electric Co
•
Filing: 1978-06-15
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Granted: 1979-04-10
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Expires: 1998-06-15
Abstract
Abstract {PG,1 Blends of a polycarbonate resin and an interpolymer modifier comprising crosslinked (meth)acrylate, crosslinked styrene-acrylonitrile, and uncrosslinked styrene-acrylonitrile polymeric components are disclosed. The blends have improved processing as compared to the processing characteristics of the polycarbonate resin alone and are impact resistant. They are more weather resistant than blends of the polycarbonate resin and ABS graft copolymers.
Inventors
- 👤 Arthur J. Yu
- 👤 Joseph Silberberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:40
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/003; C08L69/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
25 words
A weatherable, impact resistant blend comprising: (1) a polycarbonate resin; and (2) an interpolymer modifier comprising crosslinked (meth)acrylate, crosslinked styrene-acrylonitrile, and uncrosslinked styrene-acrylonitrile polymeric components.
Claim 2
Dependent Claim
25 words
A weatherable, impact resistant blend comprising: (1) a polycarbonate resin; and (2) an interpolymer modifier comprising crosslinked (meth)acrylate, crosslinked styrene-acrylonitrile, and uncrosslinked styrene-acrylonitrile polymeric components.
Claim 3
Dependent Claim
50 words
A blend as claimed in claim 1 wherein the interpolymer comprises from about 5% to about 50%, by weight, of the (meth)acrylate component, from about 5% to about 35%, by weight, of the crosslinked styrene-acrylonitrile component, and from about 15% to about 90%, by weight, of the uncrosslinked styrene-acrylonitrile component.
Claim 4
Dependent Claim
25 words
A blend as claimed in claim 1 or 2 which comprises a weight ratio of polycarbonate to interpolymer of from about 90:10 to about 5:95.
Claim 5
Dependent Claim
25 words
A blend as claimed in either claim 1 or 2 wherein the weight ratio of polycarbonate to interpolymer is from about 70:30 to about 30:70.
Claim 6
Dependent Claim
41 words
A blend as claimed in either claim 1 or 2, wherein the (meth)acrylate component is selected from the group consisting of the crosslinked C 2 -C 10 alkyl acrylates, the crosslinked C 8 -C 22 alkyl methacrylates and compatible mixtures thereof.
Claim 7
Dependent Claim
23 words
A blend as claimed in either claim 1 or 2, wherein the (meth)acrylate component is a crosslinked C 4 -C 8 alkyl acrylate.
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) | 1982-04-09 | 1982-10-09 | 1983-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-09 | 1986-10-09 | 1987-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-09 | 1990-10-09 | 1991-04-10 | $7700.00 | Window Closed / Lapsed |