US4604423A
Expired / Lapsed
US
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Composition
Assignee: General Electric Co
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Filing: 1984-11-19
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Granted: 1986-08-05
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Expires: 2004-11-19
Abstract
Abstract A composition comprising a. a major amount of an aromatic polycarbonate; b. a minor amount of an impact modified comprising (i) an amorphous polyester comprising units derived from 1,4-cyclohexane dimethanol and aromatic dicarboxylic acid or ester forming derivative; and (ii) an olefin acrylate polymeric resin; the components (i) and (ii) in such quantities that said composition has the following properties (a) thick section notched Izod impact resistance better than a, (b) compatibility as measured by Izod impact resistance of a part made from a double gated mold better than that for a+b (i) or a+b (ii); and (c) better resistance against basic organic solution as measured by notched Izod in thin section than a+b (i); and (d) a flexural property and heat strength improving quantity of glass fiber which additionally maintains the ductility of (a) and (b) under notched Izod impact testing before and after aging in a basic organic solution.
Inventors
- 👤 Ping Y. Liu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:59
CPC Classifications
C; C08; C08L; C08L69/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
152 words
A composition comprising a. a major amount of an aromatic polycarbonate; b. a minor amount of an impact modifier comprising (i) an amorphous polyester comprising units derived from 1,4-cyclohexane dimethanol and aromatic dicarboxylic acid or ester forming derivative; and (ii) an olefin acrylate polymeric resin; the components (i) and (ii) in such quantities that said composition has the following properties (a) thick section notched Izod impact resistance or ductility at break higher than a, (b) double gate Izod impact or ductility at break of a weld line higher than a+b(i) or a+b(ii); and (c) higher resistance against basic organic solution as measured by notched Izod impact resistance or ductility at break in thin section than a+b(i); and (d) a flexural property and heat strength improving quantity of glass fiber which additionally maintains the ductility of (a) and (b) under notched Izod impact testing before and after aging in a basic organic solution.
Claim 2
Dependent Claim
152 words
A composition comprising a. a major amount of an aromatic polycarbonate; b. a minor amount of an impact modifier comprising (i) an amorphous polyester comprising units derived from 1,4-cyclohexane dimethanol and aromatic dicarboxylic acid or ester forming derivative; and (ii) an olefin acrylate polymeric resin; the components (i) and (ii) in such quantities that said composition has the following properties (a) thick section notched Izod impact resistance or ductility at break higher than a, (b) double gate Izod impact or ductility at break of a weld line higher than a+b(i) or a+b(ii); and (c) higher resistance against basic organic solution as measured by notched Izod impact resistance or ductility at break in thin section than a+b(i); and (d) a flexural property and heat strength improving quantity of glass fiber which additionally maintains the ductility of (a) and (b) under notched Izod impact testing before and after aging in a basic organic solution.
Claim 3
Dependent Claim
22 words
The composition in accordance with claim 1 wherein the aromatic polycarbonate is at least about 75 weight percent of a and b.
Claim 4
Dependent Claim
20 words
The composition in accordance with claim 1 wherein b is at least about 4 weight percent of a and b.
Claim 5
Dependent Claim
20 words
The composition in accordance with claim 2 wherein b is at least about 4 weight percent of a and b.
Claim 6
Dependent Claim
22 words
The composition in accordance with claim 4 wherein the amorphous polyester b(i) is made of 1,4-cyclohexane dimethanol units, isophthalate and terephthalate units.
Claim 7
Dependent Claim
45 words
The composition in accordance with claim 4 wherein the copolymer b(ii) is made from alpha olefins of two to about ten carbon atoms, inclusive and the acrylate portion is an acrylate ester wherein the ester group is alkyl of one to six carbon atoms, inclusive.
Claim 8
Dependent Claim
45 words
The composition in accordance with claim 5 wherein the copolymer b(ii) is made from alpha olefins of two to about ten carbon atoms, inclusive and the acrylate portion is an acrylate ester wherein the ester group is alkyl of one to six carbon atoms, inclusive.
Claim 9
Dependent Claim
12 words
The composition in accordance with claim 7 wherein b(ii) is ethylene ethylacrylate.
Claim 10
Dependent Claim
19 words
The composition in accordance with claim 8 wherein the impact modifier b is at least about 8 weight percent.
Claim 11
Dependent Claim
25 words
The composition in accordance with claim 9 wherein b(i) is at least about 4 weight percent and b(ii) is at least about 4 weight percent.
Claim 12
Dependent Claim
15 words
The composition in accordance with claim 4 wherein the aromatic polycarbonate is bisphenol A polycarbonate.
Claim 13
Dependent Claim
15 words
The composition in accordance with claim 5 wherein the aromatic polycarbonate is bisphenol A polycarbonate.
Claim 14
Dependent Claim
15 words
The composition in accordance with claim 6 wherein the aromatic polycarbonate is bisphenol A polycarbonate.
Claim 15
Dependent Claim
15 words
The composition in accordance with claim 7 wherein the aromatic polycarbonate is bisphenol A polycarbonate.
Claim 16
Dependent Claim
15 words
The composition in accordance with claim 8 wherein the aromatic polycarbonate is bisphenol A polycarbonate.
Claim 17
Dependent Claim
24 words
The composition in accordance with claim 1 wherein the glass fiber is from about 5 to about 40 weight percent of a and b.
Claim 18
Dependent Claim
24 words
The composition in accordance with claim 16 wherein the glass fiber is from about 7 to about 25 weight percent of a and b.
Claim 19
Dependent Claim
9 words
An article molded from a composition of claim 16.
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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) | 1989-08-04 | 1990-02-03 | 1990-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-04 | 1994-02-03 | 1994-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-04 | 1998-02-03 | 1998-08-05 | $7700.00 | Window Closed / Lapsed |