US4839426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Misciblizing blends of polycarbonate and styrene copolymers
Assignee: General Electric Co
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Filing: 1987-08-10
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Granted: 1989-06-13
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Expires: 2007-08-10
Abstract
Abstract Blends of polycarbonate resins with styrene-acrylonitrile types of copolymers are rendered miscible by the presence of a polysulfone-carbonate resin.
Inventors
- 👤 Robert R. Gallucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:11
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08L69/00; C08L2205/00; C08L2205/02
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
60 words
A thermoplastic molding composition, which comprises; a miscible blend of from 25 to 87 parts by weight of a polycarbonate resin of a non-dihydric phenol sulfone; from 10 to 75 parts by weight of a thermoplastic copolymer of a styrenic monomer with acrylonitrile monomer having from 20 to 35 percent acrylonitrile segments; and a miscibilizing proportion of a polysulfonecarbonate copolymer.
Claim 2
Dependent Claim
60 words
A thermoplastic molding composition, which comprises; a miscible blend of from 25 to 87 parts by weight of a polycarbonate resin of a non-dihydric phenol sulfone; from 10 to 75 parts by weight of a thermoplastic copolymer of a styrenic monomer with acrylonitrile monomer having from 20 to 35 percent acrylonitrile segments; and a miscibilizing proportion of a polysulfonecarbonate copolymer.
Claim 3
Dependent Claim
45 words
The composition of claim 1 wherein the styrene-acrylonitrile copolymer has from 23 to 32 percent of acrylonitrile segments and the composition is made up of 75 parts by weight polysulfone-carbonate, 25 parts by weight polycarbonate and up to 75 parts by weight of styrene-acrylonitrile copolymer.
Claim 4
Dependent Claim
48 words
The composition of claim 1 wherein the styrene-acrylonitrile copolymer has from 23 to 32 percent of acrylonitrile segments and its composition is made up of 50 parts by weight of polysulfone-carbonate, 50 parts by weight of polycarbonate and up to 35 parts by weight of the styrene-acrylonitrile copolymer.
Claim 5
Dependent Claim
49 words
The composition of claim 1 wherein the styrene-acrylonitrile copolymer has from 23 to 32 percent of acrylonitrile segments and the composition is made up of 25 parts by weight of the polysulfone-carbonate, 75 parts by weight of polycarbonate and up to 17 parts by weight of the styrene-acrylonitrile copolymer.
Claim 6
Dependent Claim
48 words
The composition of claim 1 wherein styrene-acrylonitrile copolymer has from 23 to 32 percent of acrylonitrile segments and the composition is made up of 13 parts by weight of polysulfone-carbonate, 87 parts by weight of the polycarbonate and up to 10 parts by weight of the styrene-acrylonitrile copolymer.
Claim 7
Dependent Claim
58 words
The composition of claim 1 wherein the styrene acrylonitrile copolymer has from 23 to 32 percent of acrylonitrile segments and its composition is made up of from 13 to 75 parts by weight of the polysulfone-carbonate, from 25 to 87 parts by weight of the polycarbonate and from 10 to 75 parts by weight of the styrene-acrylonitrile copolymer.
Claim 8
Dependent Claim
51 words
The composition of claim 1 wherein the styrenic monomer is a compound of the formula: ##STR9## wherein X is selected from the group consisting of hydrogen or alkyl of from 1 to 5 carbon atoms, inclusive; and the acrylonitrile monomer is of the formula: ##STR10## wherein X is as defined above.
Claim 9
Dependent Claim
15 words
The composition of claim 7 wherein the polycarbonate is the homopolymer of 2,2-bis(hydroxyphenyl)propane and phosgene.
Claim 10
Dependent Claim
11 words
The composition of claim 8 wherein the thermoplastic copolymer is styrene-acrylonitrile.
Claim 11
Dependent Claim
11 words
The composition of claim 9 wherein the styrene-acrylonitrile copolymer is acrylonitrile-butadiene-styrene.
Claim 12
Dependent Claim
11 words
The composition of claim 9 wherein the styrene-acrylonitrile copolymer is acrylate-styrene-acrylonitrile.
Claim 13
Dependent Claim
11 words
The composition of claim 9 wherein its styrene-acrylonitrile copolymer is olefin-styrene-acrylonitrile.
Claim 14
Dependent Claim
19 words
The composition of claim 1 wherein the polysulfone-carbonate copolymer is the copolymer of bisphenol A and dixylenolsulfone and phosgene.
Claim 15
Dependent Claim
23 words
The composition of claim 1 wherein the polysulfone-carbonate copolymer is the copolymer of a 1 or more: 1 ratio of dixylenolsulfone to bisphenol-A.
Claim 16
Dependent Claim
10 words
The composition of claim 14 wherein the ratio is 1:1.
Claim 17
Dependent Claim
9 words
An article molded from the composition of claim 1.
References Cited (Backward Citations)
US4511693A
Cited
US4665122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-12 | 1992-12-12 | 1993-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-12 | 1996-12-12 | 1997-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-12 | 2000-12-12 | 2001-06-13 | $7700.00 | Window Closed / Lapsed |