US4563502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition
Assignee: General Electric Co
•
Filing: 1984-01-27
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Granted: 1986-01-07
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Expires: 2004-01-27
Abstract
Abstract Thermoplastic molding composition of a polycarbonate and a linear low density polyethylene wherein a C 4 -C 7 alpha-olefin is the comonomer.
Inventors
- 👤 Ping Y. Liu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:53
CPC Classifications
C; C08; C08L; C08L69/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
74 words
A thermoplastic composition which comprises: (a) from about 85 to about 96 weight percent of (a)+(b) of a high molecular weight aromatic polycarbonate resin; and (b) from about 4 to about 15 weight percent of (a)+(b) of a linear low density polyethylene resin having a density of from about 0.89 to about 0.96 gm./cc., said polyethylene resin comprising polymer chain units derived from ethylene and a minor amount of a comonomer consisting of butene-1.
Claim 2
Dependent Claim
74 words
A thermoplastic composition which comprises: (a) from about 85 to about 96 weight percent of (a)+(b) of a high molecular weight aromatic polycarbonate resin; and (b) from about 4 to about 15 weight percent of (a)+(b) of a linear low density polyethylene resin having a density of from about 0.89 to about 0.96 gm./cc., said polyethylene resin comprising polymer chain units derived from ethylene and a minor amount of a comonomer consisting of butene-1.
Claim 3
Dependent Claim
25 words
A thermoplastic composition as defined in claim 1 wherein the linear low density polyethylene has a density of from about 0.915 to about 0.945 gm./cc.
Claim 4
Dependent Claim
24 words
A thermoplastic composition as defined in claim 1 wherein the linear low density polyethylene is the product of a low pressure gas phase process.
Claim 5
Dependent Claim
43 words
A thermoplastic molding composition as defined in claim 1 wherein the linear low density polyethylene is a virgin ethylene copolymer formed from ethylene and butene-1 with a melt flow ratio of ≧22 to ≦32, and an unsaturated group content of ≦1C=C/1000 carbon atom.
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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) | 1989-01-06 | 1989-07-08 | 1990-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-06 | 1993-07-08 | 1994-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-06 | 1997-07-08 | 1998-01-07 | $7700.00 | Window Closed / Lapsed |