US4489181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic polycarbonate-polysulfone carbonate molding compositions
Assignee: General Electric Co
•
Filing: 1983-11-07
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Granted: 1984-12-18
•
Expires: 2003-11-07
Abstract
Abstract Compositions of an aromatic polycarbonate, a polysulfone carbonate and a filler are disclosed which have good electrical properties, high modulus and molten solder resistance.
Inventors
- 👤 Daniel W. Fox
- 👤 Robert R. Gallucci
- 👤 Edward N. Peters
- 👤 Gary F. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:33
CPC Classifications
C; C08; C08L; C08L69/00; C08K; C08K3/00; C08K3/01; C08K3/013; C08K7/00; C08K7/02; C08K7/04; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0333; H05K1/0353; H05K1/0373
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
153 words
A thermoplastic filled molding composition which comprises: (a) a blend of from 99 to 1 parts by weight of (i) an aromatic homo-polycarbonate derived from bisphenol-A and from 1 to 99 parts by weight of (ii) an aromatic polysulfone carbonate resin derived from: (1) a diaryl phenol of formula I: ##STR3## wherein R 1 and R 2 are hydrogen, (lower) alkyl of from 1 to 6 carbons or phenyl; X and Y are halogen; and a is 0, 1, 2, 3 or 4; (2) a diaryl phenol of formula II: ##STR4## wherein R 3 and R 4 may be the same or different and are (lower) alkyl of from 1 to 6 carbon atoms; b is 0 or 1 to 3, X, Y and a are the same as set forth in (i) and E is SO 2 or S; (b) an effective amount of filler that increases the modulus of the composition.
Claim 2
Dependent Claim
153 words
A thermoplastic filled molding composition which comprises: (a) a blend of from 99 to 1 parts by weight of (i) an aromatic homo-polycarbonate derived from bisphenol-A and from 1 to 99 parts by weight of (ii) an aromatic polysulfone carbonate resin derived from: (1) a diaryl phenol of formula I: ##STR3## wherein R 1 and R 2 are hydrogen, (lower) alkyl of from 1 to 6 carbons or phenyl; X and Y are halogen; and a is 0, 1, 2, 3 or 4; (2) a diaryl phenol of formula II: ##STR4## wherein R 3 and R 4 may be the same or different and are (lower) alkyl of from 1 to 6 carbon atoms; b is 0 or 1 to 3, X, Y and a are the same as set forth in (i) and E is SO 2 or S; (b) an effective amount of filler that increases the modulus of the composition.
Claim 3
Dependent Claim
21 words
A thermoplastic molding composition as defined in claim 1 wherein the polycarbonate (a)(i) is the reaction product of 2,2-bis(4-hydroxyphenol)propane and phosgene.
Claim 4
Dependent Claim
44 words
A thermoplastic molding composition as defined in claim 1 wherein from 10-90 mole % of the aromatic polysulfone carbonate (a)(ii) is the reaction product of diaryl phenol of formula I and 90-10 mole % is the reaction product of diaryl phenol of formula II.
Claim 5
Dependent Claim
18 words
A thermoplastic molding composition as defined in claim 3 wherein the diaryl phenol of formula I is 2,2-bis(4-hydroxyphenyl)propane.
Claim 6
Dependent Claim
18 words
A thermoplastic molding composition as defined in claim 3 wherein the diaryl phenol of formula II is bis(3,5-dimethyl-4-hydroxyphenyl)sulfone.
Claim 7
Dependent Claim
42 words
A thermoplastic molding composition as defined in claim 1 wherein the filler is selected from calcium carbonate, talc, mica, alumina trihydrate, feldspar, silica, glass flakes, solid glass spheres, hollow glass spheres, aramid fibers, glass fibers, carbon fibers, wollastonite, asbestos and mixtures thereof.
Claim 8
Dependent Claim
14 words
A thermoplastic molding composition as defined in claim 6 wherein the filler is mica.
Claim 9
Dependent Claim
15 words
A thermoplastic molding composition as defined in claim 6 wherein the filler is glass fibers.
Claim 10
Dependent Claim
15 words
A thermoplastic molding composition as defined in claim 6 wherein the filler is carbon fibers.
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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) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |