US4226950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plasticized, impact modified polycarbonates
Assignee: General Electric Co
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Filing: 1978-07-06
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Granted: 1980-10-07
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Expires: 1998-07-06
Abstract
Abstract Novel thermoplastic molding compositions are disclosed which comprise (a) a bisphenol-A polycarbonate; (b) an alcohol terminated polyester of neopentyl glycol (2,2-dimethyl-1,3-propane-diol) and adipic acid; in admixture with (c) a minor amount of at least one component selected from the group comprising polyolefins, olefin based copolymers and olefin based terpolymers, such as, ethylene-propylene copolymers, ethylene-butadiene copolymers, propylene-butadiene copolymers, ethylene-propylene-butadiene terpolymers, ethylene-acrylic acid copolymers, propylene-acrylic acid copolymers, ethylene-ethyl acrylate copolymers, ethylene-vinyl acetate copolymers and ethylene-propylene-acrylic acid terpolymers; or (d) an amount of at least one component selected from the group comprising methyl methacrylate-butadiene-styrene copolymers, methyl methacrylate-acrylonitrile-butadiene-styrene copolymers and acrylonitrile-butadiene-styrene copolymers.
Inventors
- 👤 Fred F. Holub
- 👤 Phillip S. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:22
CPC Classifications
C; C08; C08L; C08L69/00; C08K; C08K5/00; C08K5/04; C08K5/10; C08L101/00; C08L23/00; C08L25/00; C08L55/00; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
98 words
A thermoplastic molding composition comprising: (a) a bisphenol-A polycarbonate having an I.V. of about 0.2-1.0; (b) about 0.1-10 weight percent based upon said polycarbonate of an oligomeric ester plasticizer: 2,2-dimethyl-1,3propane-diol and adipic acid; in admixture with (c) an impact modifier of about 0.1-10 weight percent based upon said polycarbonate of at least one component selected from the group consisting of polyolefins, olefin based copolymers and olefin based terpolymers, or (d) about 0.1-50 weight percent based upon said polycarbonate of at least one component selected from the group consisting of methyl methacrylate-butadiene-styrene copolymers, methyl methacrylate-acrylonitrile-butadiene-styrene copolymers and acrylonitrile-butadiene-styrene copolymers.
Claim 2
Dependent Claim
98 words
A thermoplastic molding composition comprising: (a) a bisphenol-A polycarbonate having an I.V. of about 0.2-1.0; (b) about 0.1-10 weight percent based upon said polycarbonate of an oligomeric ester plasticizer: 2,2-dimethyl-1,3propane-diol and adipic acid; in admixture with (c) an impact modifier of about 0.1-10 weight percent based upon said polycarbonate of at least one component selected from the group consisting of polyolefins, olefin based copolymers and olefin based terpolymers, or (d) about 0.1-50 weight percent based upon said polycarbonate of at least one component selected from the group consisting of methyl methacrylate-butadiene-styrene copolymers, methyl methacrylate-acrylonitrile-butadiene-styrene copolymers and acrylonitrile-butadiene-styrene copolymers.
Claim 3
Dependent Claim
41 words
The composition of claim 1 wherein the impact modifier (c) is selected from the group consisting of ethylene-propylene copolymers, ethylene-butadiene copolymers, propylene-butadiene copolymers, ethylene-propylene-butadiene terpolymers, ethylene-acrylic acid copolymers, propylene-acrylic acid copolymers, ethylene-ethyl acrylate copolymers, ethylene-vinyl acetate copolymers and ethylene-propylene-acrylic acid terpolymers.
Claim 4
Dependent Claim
12 words
The composition of claim 2 wherein the impact modifier is component (c).
Claim 5
Dependent Claim
12 words
The composition of claim 2 wherein the impact modifier is component (d).
Claim 6
Dependent Claim
32 words
The composition of claim 2 wherein (c) is selected from the group consisting essentially of ethylene-acrylic acid copolymers, propylene-acrylic acid copolymers, ethylene-ethyl acrylate copolymers, ethylene-vinyl acetate copolymers and ethylene-propylene acrylic acid terpolymers.
Claim 7
Dependent Claim
18 words
The composition of claim 1 wherein component (b) is present in an amount of about 1-5 weight percent.
Claim 8
Dependent Claim
19 words
The composition of claim 1 wherein the component (c) is present in an amount of about 2-6 weight percent.
Claim 9
Dependent Claim
18 words
The composition of claim 1 wherein component (d) is present in an amount of about 2-20 weight percent.
Claim 10
Dependent Claim
16 words
The composition of claim 1 which includes a flame retardant amount of a flame retardant agent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-07 | 1984-04-07 | 1984-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-07 | 1988-04-07 | 1988-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-07 | 1992-04-07 | 1992-10-07 | $7700.00 | Window Closed / Lapsed |