US4510289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polycarbonate/condensation polymer blends
Assignee: General Electric Co
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Filing: 1982-12-20
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Granted: 1985-04-09
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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 condensation 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
2026-10-30 22:13
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08L69/00; Y; Y10; Y10S; Y10S525/00; Y10S525/903; Y10S525/906
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
62 words
A thermoplastic resin composition comprising: (a) a mixed polycarbonate consisting of units derived from a first dihydric phenol, which is a bis(hydroxyaryl)sulfone, and a second dihydric phenol, said first and second dihydric phenols being in a mole ratio of 1:5 to 7:3; and (b) a thermoplastic condensation polymer comprising an aromatic polycarbonate, said composition having been admixed to produce a compatible composition.
Claim 2
Dependent Claim
62 words
A thermoplastic resin composition comprising: (a) a mixed polycarbonate consisting of units derived from a first dihydric phenol, which is a bis(hydroxyaryl)sulfone, and a second dihydric phenol, said first and second dihydric phenols being in a mole ratio of 1:5 to 7:3; and (b) a thermoplastic condensation polymer comprising an aromatic polycarbonate, said composition having been admixed to produce a compatible composition.
Claim 3
Dependent Claim
23 words
The composition of claim 1, wherein the mixed polycarbonate comprises from about 1 to about 99 percent by weight of total resin weight.
Claim 4
Dependent Claim
23 words
The composition of claim 2, wherein the mixed polycarbonate comprises from about 10 to about 90 percent by weight of total resin weight.
Claim 5
Dependent Claim
81 words
A thermoplastic resin composition comprising: (a) from about 20 to about 80 percent by weight of a mixed polycarbonate consisting of units derived from a first dihydric phenol, which is a bis(hydroxyaryl)sulfone, and a second dihydric phenol, said first and second dihydric phenols being in a mole ratio of 1:5 to 7:3; and (b) from 80 to about 20 percent by weight of a thermoplastic condensation polymer comprising an aromatic polycarbonate, said composition having been admixed to produce a compatible composition.
Claim 6
Dependent Claim
81 words
A thermoplastic resin composition comprising: (a) from about 20 to about 80 percent by weight of a mixed polycarbonate consisting of units derived from a first dihydric phenol, which is a bis(hydroxyaryl)sulfone, and a second dihydric phenol, said first and second dihydric phenols being in a mole ratio of 1:5 to 7:3; and (b) from 80 to about 20 percent by weight of a thermoplastic condensation polymer comprising an aromatic polycarbonate, said composition having been admixed to produce a compatible composition.
Claim 7
Dependent Claim
24 words
The composition of claim 2, wherein the thermoplastic condensation polymer comprises from about 99 to 1 percent by weight of the total resin weight.
Claim 8
Dependent Claim
24 words
The composition of claim 3, wherein the thermoplastic condensation polymer comprises from about 90 to about 10 percent by wight of total resin weight.
Claim 9
Dependent Claim
25 words
The composition of claim 4, wherein a thermoplastic condensation polymer comprises from about 80 to about 20 percent by weight of the total resin weight.
Claim 10
Dependent Claim
14 words
The composition of claim 1, wherein the mixed polycarbonate comprises units derived from bis(3,5-dimethyl-4-hydroxyphenyl)sulfone.
Claim 11
Dependent Claim
15 words
The composition of claim 8, wherein the mixed polycarbonate also comprises units derived from 2,2'-bis(4-hydroxyphenyl)propane.
Claim 12
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 13
Dependent Claim
13 words
The composition of claim 1, wherein the mixed polycarbonate comprises units of 2,2'-bis(4-hydroxyphenyl)propane.
Claim 14
Dependent Claim
15 words
The composition of claim 1, wherein the mixed polycarbonate consists of units derived from bis(3,5-dimethyl-4-hydroxyphenyl)sulfone.
Claim 15
Dependent Claim
40 words
A composition as defined in claim 1, wherein the thermoplastic condensation polymer also includes a polymer selected from the group consisting of a polyester, a copolyestercarbonate, a polyarylate, a poly(aryl ether), a copolyetherester block copolymer, a polyhydroxyether, and a polyimide.
Claim 16
Dependent Claim
15 words
A composition as defined in claim 13, which also includes a thermoplastic addition polymer resin.
Claim 17
Dependent Claim
35 words
A composition as defined in claim 14, wherein said thermoplastic addition polymer resin is selected from a styrene resin, an alkyl acrylate resin, a vinyl halide resin, or a mixture of any of the foregoing.
Claim 18
Dependent Claim
24 words
A composition as defined in claim 13, wherein the aromatic polycarbonate (b) is the reaction product of a dihydric phenol and a carbonate precursor.
Claim 19
Dependent Claim
20 words
A composition as defined in claim 16, wherein the dihydric phenol is bisphenol-A and the carbonate precursor is carbonyl chloride.
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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) | 1988-04-08 | 1988-10-08 | 1989-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-08 | 1992-10-08 | 1993-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-08 | 1996-10-08 | 1997-04-09 | $7700.00 | Window Closed / Lapsed |