US4885335A
Expired / Lapsed
US
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Low gloss thermoplastic blends
Assignee: General Electric Co
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Filing: 1988-12-27
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Granted: 1989-12-05
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Expires: 2008-12-27
Abstract
Abstract A low gloss thermoplastic with good physical properties comprises a blend of a polycarbonate with an acrylonitrile-styrene-acrylate interpolymer and a gloss-reducing amount of a glycidyl (meth)acrylate copolymer.
Inventors
- 👤 Robert R. Gallucci
- 👤 Ronald J. Wroczynski
- 👤 James F. Jones
- 👤 Stefan F. Rasch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:35
CPC Classifications
C; C08; C08L; C08L69/00; C08L69/005
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
89 words
A low-gloss thermoplastic blend comprising: (a) at least one thermoplastic aromatic carbonate polymer; (b) an acrylonitrile-styrene-acrylate (ASA) interpolymer, the ratio of (a) to (b) being in the range of from about 10:90 to 90:10 by weight; and (c) an effective gloss-reducing amount of from about 0.05 to 5% of at least one polymer of glycidyl methacrylate, in which, where said polymer of glycidyl methacrylate is a copolymer, at least one comonomer is selected from the group consisting of styrene, acrylonitrile, and esters, other than glycidol esters, of (meth)acrylic acids.
Claim 2
Dependent Claim
89 words
A low-gloss thermoplastic blend comprising: (a) at least one thermoplastic aromatic carbonate polymer; (b) an acrylonitrile-styrene-acrylate (ASA) interpolymer, the ratio of (a) to (b) being in the range of from about 10:90 to 90:10 by weight; and (c) an effective gloss-reducing amount of from about 0.05 to 5% of at least one polymer of glycidyl methacrylate, in which, where said polymer of glycidyl methacrylate is a copolymer, at least one comonomer is selected from the group consisting of styrene, acrylonitrile, and esters, other than glycidol esters, of (meth)acrylic acids.
Claim 3
Dependent Claim
70 words
A low-gloss thermoplastic blend comprising: (a) at least one thermoplastic aromatic polycarbonate; (b) an acrylonitrile-styrene-acrylate interpolymer, the ratio of (a) to (b) being in the range of from about 10:90 to 75:25 by weight; and (c) from about 0.05% to 5% of at least one copolymer of glycidyl methacrylate with at least one monomer from the group consisting of styrene, acrylonitrile, and a (meth)acrylate ester other than the glycidol ester.
Claim 4
Dependent Claim
70 words
A low-gloss thermoplastic blend comprising: (a) at least one thermoplastic aromatic polycarbonate; (b) an acrylonitrile-styrene-acrylate interpolymer, the ratio of (a) to (b) being in the range of from about 10:90 to 75:25 by weight; and (c) from about 0.05% to 5% of at least one copolymer of glycidyl methacrylate with at least one monomer from the group consisting of styrene, acrylonitrile, and a (meth)acrylate ester other than the glycidol ester.
Claim 5
Dependent Claim
16 words
The thermoplastic blend defined in claim 2 herein said polycarbonate is derived principally from isphenol A.
Claim 6
Dependent Claim
36 words
The thermoplastic blend defined in claim 1 wherein said interpolymer (b) comprises a styrene-acrylonitrile matrix and a core-shell impact modifier of which the shell is styrene-acrylonitrile copolymer and the core is a crosslinked butyl (meth)acrylate rubber.
Claim 7
Dependent Claim
61 words
The thermoplastic blend defined in claim 4 wherein said polymer (b) comprises from about 15 to about 90% of an uncrosslinked matrix of acrylonitrile-styrene polymerized and partly grafted on a core-shell impact modifier, said impact modifier comprising from about 5 to about 50% of a crosslinked (meth)acrylate elastomer core with from about 15 to about 35% of a crosslinked styrene-acrylonitrile shell.
Claim 8
Dependent Claim
17 words
The thermoplastic blend defined in claim 2 wherein said glycidyl methacrylate copolymer is a copolymer with styrene.
Claim 9
Dependent Claim
21 words
The thermoplastic blend defined in claim 2 wherein said glycidyl methacrylate copolymer is a copolymer with styrene and an alkyl (meth)acrylate.
Claim 10
Dependent Claim
38 words
The thermoplastic blend defined in claim 1 wherein said polymer (a) is a polycarbonate derived principally from bisphenol A and phosgene, said polymer (b) is ASA and said polymer (c) is a copolymer of glycidyl methacrylate with styrene.
Claim 11
Dependent Claim
35 words
The thermoplastic blend defined in claim 1 wherein said component (a) is a polycarbonate derived principally from bisphenol A and phosgene, (b) is ASA and (c) is a copolymer of glycidyl methacrylate with methyl methacrylate.
Claim 12
Dependent Claim
116 words
A low-gloss thermoplastic blend comprising: (a) a polycarbonate derived principally from bisphenol A and phosgene; (b) an acrylonitrile-styrene-acrylate interpolymer resin having a styrene-acrylonitrile matrix and a core-shell impact modifier of which the shell is styrene-acrylonitrile copolymer and the core is a crosslinked butyl (meth)acrylate rubber; and (c) an effective gloss-reducing amount of a copolymer of glycidyl methacrylate with at least one comonomer selected from the group consisting of styrene, methyl methacrylate, and an alkyl acrylate; the ratio of (a) to (b) being in the range of about 10:90 to about 75:25 and the amount of (c) being in the range of about 0.05 to 5% calculated on the basis of the weight of (a) plus (b).
Claim 13
Dependent Claim
116 words
A low-gloss thermoplastic blend comprising: (a) a polycarbonate derived principally from bisphenol A and phosgene; (b) an acrylonitrile-styrene-acrylate interpolymer resin having a styrene-acrylonitrile matrix and a core-shell impact modifier of which the shell is styrene-acrylonitrile copolymer and the core is a crosslinked butyl (meth)acrylate rubber; and (c) an effective gloss-reducing amount of a copolymer of glycidyl methacrylate with at least one comonomer selected from the group consisting of styrene, methyl methacrylate, and an alkyl acrylate; the ratio of (a) to (b) being in the range of about 10:90 to about 75:25 and the amount of (c) being in the range of about 0.05 to 5% calculated on the basis of the weight of (a) plus (b).
Claim 14
Dependent Claim
24 words
A low gloss thermoplastic blend as defined in claim 10 wherein said copolymer (c) is the copolymer of about 20% glycidyl methacrylate with styrene.
Claim 15
Dependent Claim
30 words
A low gloss thermoplastic blend as defined in claim 10 wherein said copolymer (c) is the copolymer of about 15% glycidyl methacrylate with methyl methacrylate, styrene, and an alkyl acrylate.
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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) | 1992-12-04 | 1993-06-05 | 1993-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-04 | 1997-06-05 | 1997-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-04 | 2001-06-05 | 2001-12-05 | $7700.00 | Window Closed / Lapsed |