US4496693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compatibilization of polycarbonate blends
Assignee: General Electric Co
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Filing: 1983-12-01
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Granted: 1985-01-29
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Expires: 2003-12-01
Abstract
Abstract A composition comprising an admixture of a. an aromatic carbonate polymer, b. a polyolefin or modified polyolefin in sufficient quantity to impact modify the aromatic carbonate polymer, and c. an amount of catalyst sufficient to compatibilize a and b selected from the group consisting of basic compounds of alkali or alkaline earth metals.
Inventors
- 👤 Niles R. Rosenquist
- 👤 John A. Tyrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:36
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/30; C08L; C08L23/00; C08L69/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
55 words
A composition comprising an admixture of a. an aromatic carbonate polymer, b. a polyolefin or modified polyolefin in sufficient quantity to impact modify the aromatic carbonate polymer, and c. an amount of catalyst sufficient to compatibilize a and b selected from the group consisting of hydroxides, oxides and amides of alkali and alkaline earth metals.
Claim 2
Dependent Claim
55 words
A composition comprising an admixture of a. an aromatic carbonate polymer, b. a polyolefin or modified polyolefin in sufficient quantity to impact modify the aromatic carbonate polymer, and c. an amount of catalyst sufficient to compatibilize a and b selected from the group consisting of hydroxides, oxides and amides of alkali and alkaline earth metals.
Claim 3
Dependent Claim
26 words
The composition in accordance with claim 1 wherein the alkali metals are sodium, lithium and potassium and the alkaline earth metals are calcium, strontum and barium.
Claim 4
Dependent Claim
13 words
The composition in accordance with claim 2 wherein the alkali metals are employed.
Claim 5
Dependent Claim
81 words
The composition in accordance with claim 1 wherein the polyolefin or modified polyolefin is selected from polyethylene; polypropylene; polyisobutylene; a copolymer of an olefin from about two to four carbon atoms, inclusive, and a C 1-6 alkylacrylate wherein alkyl is one to three carbon atoms, inclusive, acrylic acid or methacrylic acid; a copolymer of ethylene and propylene, ethylene and other alpha olefins four to eight carbon atoms, inclusive, and propylene and other alpha olefins of four to eight carbon atoms, inclusive.
Claim 6
Dependent Claim
26 words
The composition in accordance with claim 4 wherein the polyolefin or modified polyolefin is from about 2 to about 15 weight percent of a and b.
Claim 7
Dependent Claim
21 words
The composition in accordance with claim 5 wherein the polyolefin or modified polyolefin is from about 3 to 12 weight percent.
Claim 8
Dependent Claim
16 words
The composition in accordance with claim 6 wherein the aromatic carbonate polymer is derived from bisphenol-A.
Claim 9
Dependent Claim
21 words
The composition in accordance with claim 7 wherein component b is a copolymer of an olefin and a C 1-6 alkylacrylate.
Claim 10
Dependent Claim
12 words
The composition in accordance with claim 8 wherein the olefin is ethylene.
Claim 11
Dependent Claim
13 words
The composition in accordance with claim 9 wherein C 1-6 alkylacrylate is ethylacrylate.
Claim 12
Dependent Claim
13 words
The composition in accordance with claim 3 wherein the alkali metal is lithium.
Claim 13
Dependent Claim
13 words
The composition in accordance with claim 3 wherein the alkali metal is sodium.
Claim 14
Dependent Claim
13 words
The composition in accordance with claim 3 wherein the alkali metal is potassium.
Claim 15
Dependent Claim
16 words
The composition in accordance with claim 11 wherein the compound is lithium hydroxide or lithium oxide.
Claim 16
Dependent Claim
13 words
The composition in accordance with claim 14 wherein the compound is lithium hydroxide.
Claim 17
Dependent Claim
17 words
The composition in accordance with claim 7 wherein the compound is an alkali metal hydroxide or oxide.
Claim 18
Dependent Claim
16 words
The composition in accordance with claim 16 wherein the compound is lithium hydroxide or lithium oxide.
Claim 19
Dependent Claim
13 words
The composition in accordance with claim 17 wherein the compound is lithium hydroxide.
References Cited (Backward Citations)
US3431224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-29 | 1988-07-30 | 1989-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-29 | 1992-07-30 | 1993-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-29 | 1996-07-30 | 1997-01-29 | $7700.00 | Window Closed / Lapsed |