US4595729A
Expired / Lapsed
US
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Polycarbonate/addition polymer blends
Assignee: General Electric Co
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Filing: 1985-01-18
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Granted: 1986-06-17
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Expires: 2005-01-18
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
2026-11-08 11:57
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08L69/00
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
73 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 containing hetero groups, selected from alkyl acrylate resins, vinyl chloride polymers, or combinations thereof, said composition having been admixed to produce a compatible composition.
Claim 2
Dependent Claim
73 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 containing hetero groups, selected from alkyl acrylate resins, vinyl chloride polymers, or combinations thereof, said composition having been admixed to produce a compatible composition.
Claim 3
Dependent Claim
19 words
A composition as defined in claim 1, wherein the thermoplastic addition polymer resin is an alkyl acrylate polymer resin.
Claim 4
Dependent Claim
14 words
A composition as defined in claim 2, wherein the alkyl acrylate is poly(methyl methacrylate).
Claim 5
Dependent Claim
37 words
A composition as defined in claim 2, wherein the alkyl acrylate is a copolymer of methylmethacrylate and a vinyl monomer wherein the amount of methyl methacrylate is greater than about 70 percent by weight of the copolymer.
Claim 6
Dependent Claim
17 words
A composition as defined in claim 1, wherein the thermoplastic addition polymer resin is a poly(vinyl chloride).
Claim 7
Dependent Claim
37 words
A composition as defined in claim 5, wherein the poly(vinyl chloride)polymer is a copolymer of vinyl chloride with an olefinically unsaturated polymerizable compound which contains at least about 80 percent by weight of vinyl chloride incorporated therein.
Claim 8
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 9
Dependent Claim
22 words
The composition of claim 7, wherein the polycarbonate comprises from about 10 to about 90 percent by weight of total resin weight.
Claim 10
Dependent Claim
22 words
The composition of claim 7, wherein the polycarbonate comprises from about 20 to about 80 percent by weight of total resin weight.
Claim 11
Dependent Claim
25 words
The composition of claim 7, wherein the thermoplastic addition polymer comprises from about 80 to about 20 percent by weight of the total resin weight.
Claim 12
Dependent Claim
23 words
The composition of claim 7, wherein the addition polymer comprises from about 90 to about 10 percent by weight of total resin weight.
Claim 13
Dependent Claim
25 words
The composition of claim 9, wherein the thermoplastic addition polymer comprises from about 80 to about 20 percent by weight of the total resin weight.
Claim 14
Dependent Claim
13 words
The composition of claim 1, wherein the polycarbonate comprises units derived from bis(3,5-dimethyl-4-hydroxyphenyl)sulfone.
Claim 15
Dependent Claim
14 words
The composition of claim 13, wherein the polycarbonate also comprises units derived from 2,2'-bis(4-hydroxyphenyl)propane.
Claim 16
Dependent Claim
24 words
The composition of claim 14, 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 17
Dependent Claim
12 words
The composition of claim 1, wherein the polycarbonate comprises units of 2,2'-bis(4-hydroxyphenyl)propane.
Claim 18
Dependent Claim
26 words
A composition as defined in claim 1, wherein the thermoplastic addition polymer resin is a mixture of an alkyl acrylate polymer resin and a poly(vinyl chloride).
Claim 19
Dependent Claim
20 words
A composition as defined in claim 17, wherein the thermoplastic addition polymer is a mixture of polymethylmethacrylate and poly(ethylene terephthalate).
Claim 20
Dependent Claim
20 words
A composition as defined in claim 17, wherein said vinyl chloride polymer is a mixture of poly(ethylene terephthalate) and polyvinylchloride.
Claim 21
Dependent Claim
18 words
A composition as defined in claim 18, wherein the polycarbonate:polymethylmethacrylate:poly(ethylene terephthalate) ratio by weight is approximately 40:40:20 percent.
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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) | 1989-06-16 | 1989-12-16 | 1990-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-16 | 1993-12-16 | 1994-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-16 | 1997-12-16 | 1998-06-17 | $7700.00 | Window Closed / Lapsed |