US4511693A
Expired / Lapsed
US
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Polycarbonate/addition polymer blends
Assignee: General Electric Co
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Filing: 1982-12-20
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Granted: 1985-04-16
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Expires: 2002-12-20
Abstract
Abstract A thermoplastic composition includes compatible blends of a mixed polycarbonate comprising units derived from a first dihydric phenol, which is a bis(hydroxyaryl) sulfone, a second dihydric phenol; and one or more thermoplastic polymers containing hetero groups.
Inventors
- 👤 Daniel W. Fox
- 👤 Edward N. Peters
- 👤 Gary F. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:54
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08L69/00; Y; Y10; Y10S; Y10S525/00; Y10S525/903; Y10S525/906
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
63 words
A thermoplastic resin composition comprising: (a) a mixed polycarbonate comprising units derived from a first dihydric phenol, which is a bis(hydroxyaryl)sulfone, and a second dihydric phenol, said first and second dihydric phenols in a mole ratio of about 1:5 to 5:1; and (b) one or more thermoplastic addition polymers comprising a styrene polymer, said composition having been admixed to produce a compatible composition.
Claim 2
Dependent Claim
63 words
A thermoplastic resin composition comprising: (a) a mixed polycarbonate comprising units derived from a first dihydric phenol, which is a bis(hydroxyaryl)sulfone, and a second dihydric phenol, said first and second dihydric phenols in a mole ratio of about 1:5 to 5:1; and (b) one or more thermoplastic addition polymers comprising a styrene polymer, said composition having been admixed to produce a compatible composition.
Claim 3
Dependent Claim
22 words
The composition of claim 1, wherein the polycarbonate comprises from about 1 to about 99 percent by weight of total resin weight.
Claim 4
Dependent Claim
22 words
The composition of claim 2, wherein the polycarbonate comprises from about 10 to about 90 percent by weight of total resin weight.
Claim 5
Dependent Claim
22 words
The composition of claim 3, wherein the polycarbonate comprises from about 20 to about 80 percent by weight of total resin weight.
Claim 6
Dependent Claim
25 words
The composition of claim 2, wherein the thermoplastic addition polymer comprises from about 80 to about 20 percent by weight of the total resin weight.
Claim 7
Dependent Claim
23 words
The composition of claim 5 wherein the addition polymer comprises from about 90 to about 10 percent by weight of total resin weight.
Claim 8
Dependent Claim
25 words
The composition of claim 4, wherein the thermoplastic addition polymer comprises from about 80 to about 20 percent by weight of the total resin weight.
Claim 9
Dependent Claim
13 words
The composition of claim 1, wherein the polycarbonate comprises units derived from bis(3,5-dimethyl-4-hydroxyphenyl)sulfone.
Claim 10
Dependent Claim
14 words
The composition of claim 8, wherein the polycarbonate also comprises units derived from 2,2'bis(4-hydroxyphenyl)propane.
Claim 11
Dependent Claim
24 words
The composition of claim 9, wherein the bis(3,5-dimethyl-4-hydroxyphenyl)sulfone and the 2,2'-bis(4-hydroxyphenyl)propane units are in a mole ratio of from about 1:99 to about 99:1.
Claim 12
Dependent Claim
12 words
The composition of claim 1, wherein the polycarbonate comprises units of 2,2'-bis(4-hydroxyphenyl)propane.
Claim 13
Dependent Claim
14 words
The composition of claim 1, wherein the polycarbonate consists of units derived from bis(3,5-dimethyl-4-hydroxyphenyl)sulfone.
Claim 14
Dependent Claim
30 words
A composition as defined in claim 1, wherein the thermoplastic addition polymer also includes a polymer selected from the group consisting of an alkyl acrylate, and a vinyl halide resin.
Claim 15
Dependent Claim
14 words
A composition as defined in claim 1, which also includes a condensation polymer resin.
Claim 16
Dependent Claim
24 words
A composition as defined in claim 14, wherein the condensation polymer resin is a polyester resin, a copolyetherester block copolymer resin, or a mixture.
Claim 17
Dependent Claim
18 words
A composition as defined in claim 13, wherein the thermoplastic addition polymer resin is a styrene polymer resin.
Claim 18
Dependent Claim
50 words
A composition as defined in claim 16, wherein the styrene polymer is prepared by polymerizing a conjugated diene monomer or a conjugated diene monomer with a monomer copolymerizable therewith or an acrylic acid ester to provide an elastomeric backbone and thereafter grafting at least one grafting monomer onto said backbone.
Claim 19
Dependent Claim
31 words
A composition as defined in claim 17, wherein the conjugated diene monomer is butadiene and the grafting monomer is selected from styrene, an acrylonitrile, an acrylic acid ester, or mixtures thereof.
Claim 20
Dependent Claim
15 words
A composition as defined in claim 16, wherein the styrene resin is a butadiene/styrene/acrylonitrile resin.
Claim 21
Dependent Claim
15 words
A composition as defined in claim 16, wherein the styrene resin is a styrene-acrylonitrile resin.
Claim 22
Dependent Claim
15 words
A composition as defined in claim 20, wherein the styrene resin contains about 30% acrylonitrile.
Claim 23
Dependent Claim
16 words
A composition as defined in claim 16, wherein the styrene resin is a styrene-maleic anhydride resin.
Claim 24
Dependent Claim
21 words
A composition as defined in claim 22, wherein the styrene maleic anhydride resin contains between 15 and 33 percent maleic anhydride.
Claim 25
Dependent Claim
16 words
A composition as defined in claim 16, wherein the styrene resin is a styrene-methyl methacrylate resin.
Claim 26
Dependent Claim
15 words
A composition as defined in claim 24, wherein the styrene-methylmethacrylate resin contains about 30% methylmethacrylate.
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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) | 1988-04-15 | 1988-10-15 | 1989-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-15 | 1992-10-15 | 1993-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-15 | 1996-10-15 | 1997-04-16 | $7700.00 | Window Closed / Lapsed |