US4430476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinous composition comprising a polycarbonate resin, a linear low density polyolefin and an alkenyl aromatic copolymer
Assignee: General Electric Co
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Filing: 1982-01-29
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Granted: 1984-02-07
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Expires: 2002-01-29
Abstract
Abstract Novel thermoplastic molding compositions are disclosed which comprise a polycarbonate resin, an alkenyl aromatic copolymer and a linear low density polyolefin.
Inventors
- 👤 Ping Y. Liu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:31
CPC Classifications
C; C08; C08L; C08L69/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
99 words
A composition which comprises a. from about 35 to 90 weight percent of an aromatic polycarbonate resin; b. from about 0.5 to 20 weight percent of linear low density polyethylene having a density of from about 0.89 to 0.96 gms/cc; and c. from about 9.5 to 45 weight percent of an acrylonitrile-butadiene-styrene resin or an acrylonitrile-butadiene-alphamethyl styrene resin; the weight percent of each of a, b and c based upon the total weight of a, b and c and the impact strength of said composition as measured by the ASTM D-256 double gate test being above about 7.0 ft/lbs.
Claim 2
Dependent Claim
99 words
A composition which comprises a. from about 35 to 90 weight percent of an aromatic polycarbonate resin; b. from about 0.5 to 20 weight percent of linear low density polyethylene having a density of from about 0.89 to 0.96 gms/cc; and c. from about 9.5 to 45 weight percent of an acrylonitrile-butadiene-styrene resin or an acrylonitrile-butadiene-alphamethyl styrene resin; the weight percent of each of a, b and c based upon the total weight of a, b and c and the impact strength of said composition as measured by the ASTM D-256 double gate test being above about 7.0 ft/lbs.
Claim 3
Dependent Claim
22 words
A composition in accordance with claim 1 wherein the density of the linear low density polyethylene is from about 0.915 to 0.945.
Claim 4
Dependent Claim
29 words
A composition in accordance with claim 2 wherein the linear low density polyethylene is prepared from ethylene and an alpha olefin having from four to eight carbon atoms, inclusive.
Claim 5
Dependent Claim
13 words
A composition in accordance with claim 3 wherein the alpha olefin is butene-1.
Claim 6
Dependent Claim
34 words
A composition in accordance with claim 2 wherein the aromatic polycarbonate is of the formula ##STR4## wherein R 1 and R 2 are hydrogen, (lower) alkyl or phenyl and n is at least 30.
Claim 7
Dependent Claim
16 words
A composition in accordance with claim 2 wherein the aromatic polycarbonate is derived from bisphenol A.
Claim 8
Dependent Claim
16 words
A composition in accordance with claim 3 wherein the aromatic polycarbonate is derived from bisphenol A.
Claim 9
Dependent Claim
16 words
A composition in accordance with claim 4 wherein the aromatic polycarbonate is derived from bisphenol A.
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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) | 1987-02-06 | 1987-08-08 | 1988-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-06 | 1991-08-08 | 1992-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-06 | 1995-08-08 | 1996-02-07 | $7700.00 | Window Closed / Lapsed |