US4634737A
Expired / Lapsed
US
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Copolyester-carbonate composition
Assignee: General Electric Co
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Filing: 1985-11-19
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Granted: 1987-01-06
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Expires: 2005-11-19
Abstract
Abstract A glass free copolyester-carbonate composition exhibiting improved resistance to mild organic solvents comprising, in admixture: (i) at least one high molecular weight thermoplastic aromatic copolyester-carbonate resin containing from about 25 to about 90 mole percent ester bonds; (ii) at least one amorphous polyester resin containing the reaction products of (a) at least one polyol selected form 1,4-cyclohexanedimethanol or a mixture of 1,4-cyclohexanedimethanol and ethylene glycol, and (b) at least one aromatic dicarboxylic acid or its ester forming reactive derivative selected from isophthalic acid, terephathalic acid, or mixtures thereof; and (iii) at least one polymer selected from (a) an olefin acrylate copolymer, (b) a polyolefin, and (c) an olefin diene terpolymer; components (ii) and (iii) being present in amounts at least effective to impart to said composition a resistance to mild organic solvents greater than that possessed by said copolyester-carbonate resin.
Inventors
- 👤 Ping Y. Liu
- 👤 Edward L. Belfoure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:03
CPC Classifications
C; C08; C08L; C08L69/00; C08L69/005
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
142 words
A glass free copolyester carbonate composition exhibiting improved resistance to mild organic solvents consisting essentially of, in admixture: (i) at least one high molecular weight thermoplastic aromatic copolyester-carbonate resin containing from about 25 to about 90 mole percent ester bonds; (ii) at least one polyester resin containing the reaction products of (a) at least one polyol selected from 1,4-cyclohexanedimethanol or a mixture of 1,4-cyclohexanedimethanol and ethylene glycol, and (b) at least one aromatic dicarboxylic acid or its ester forming reactive derivative selected from isophthalic acid, terephthalic acid, or mixtures thereof; and (iii) at least one polymer selected from (a) an olefin acrylate copolymer, (b) a polyolefin, and (c) an olefin diene terpolymer; components (ii) and (iii) being present in amounts at least effective to impart to said composition a resistance to mild organic solvents greater than that possessed by said copolyester-carbonate resin.
Claim 2
Dependent Claim
142 words
A glass free copolyester carbonate composition exhibiting improved resistance to mild organic solvents consisting essentially of, in admixture: (i) at least one high molecular weight thermoplastic aromatic copolyester-carbonate resin containing from about 25 to about 90 mole percent ester bonds; (ii) at least one polyester resin containing the reaction products of (a) at least one polyol selected from 1,4-cyclohexanedimethanol or a mixture of 1,4-cyclohexanedimethanol and ethylene glycol, and (b) at least one aromatic dicarboxylic acid or its ester forming reactive derivative selected from isophthalic acid, terephthalic acid, or mixtures thereof; and (iii) at least one polymer selected from (a) an olefin acrylate copolymer, (b) a polyolefin, and (c) an olefin diene terpolymer; components (ii) and (iii) being present in amounts at least effective to impart to said composition a resistance to mild organic solvents greater than that possessed by said copolyester-carbonate resin.
Claim 3
Dependent Claim
28 words
The composition of claim 1 which contains from about 2 to about 25 weight percent of (ii) and from about 1 to about 20 weight percent of (iii).
Claim 4
Dependent Claim
28 words
The composition of claim 2 which contains from about 4 to about 20 weight percent of (ii) and from about 2 to about 15 weight percent of (iii).
Claim 5
Dependent Claim
28 words
The composition of claim 3 which contains from about 5 to about 15 weight percent of (ii) and from about 3 to about 10 weight percent of (iii).
Claim 6
Dependent Claim
12 words
The composition of claim 1 wherein (iii) is an olefin acrylate copolymer.
Claim 7
Dependent Claim
42 words
The composition of claim 5 wherein said olefin acrylate copolymer is a copolymer of an olefin and at least one of a C 1 -C 6 alkyl acrylate, a C 1 -C 6 alkyl methacrylate, acrylic acid, methacrylic acid, or mixtures thereof.
Claim 8
Dependent Claim
23 words
The composition of claim 6 wherein said olefin acrylate copolymer is a copolymer of an olefin and a C 1 -C 6 acrylate.
Claim 9
Dependent Claim
12 words
The composition of claim 7 wherein said alkyl acrylate is ethyl acrylate.
Claim 10
Dependent Claim
10 words
The composition of claim 8 wherein said olefin is ethylene.
Claim 11
Dependent Claim
10 words
The composition of claim 1 wherein (iii) is a polyolefin.
Claim 12
Dependent Claim
12 words
The composition of claim 10 wherein said polyolefin is an olefin copolymer.
Claim 13
Dependent Claim
13 words
The composition of claim 11 wherein said olefin copolymer is ethylene propylene copolymer.
Claim 14
Dependent Claim
12 words
The composition of claim 1 wherein (iii) is an olefin diene terpolymer.
Claim 15
Dependent Claim
16 words
The composition of claim 13 wherein said olefin diene terpolymer is an ethylene propylene diene terpolymer.
Claim 16
Dependent Claim
13 words
The composition of claim 14 wherein said diene is selected from the norbornenes.
Claim 17
Dependent Claim
10 words
The composition of claim 15 wherein said diene is norbornene.
Claim 18
Dependent Claim
11 words
The composition of claim 15 wherein said diene is ethylidene norbornene.
Claim 19
Dependent Claim
18 words
The composition of claim 1 wherein said polyol of (ii) is a mixture of 1,4-cyclohexanedimethanol and ethylene glycol.
Claim 20
Dependent Claim
20 words
The composition of claim 18 wherein the molar ratio of 1,4-cyclohexanedimethanol to ethylene glycol is from about 4:1 to 1:4.
Claim 21
Dependent Claim
17 words
The composition of claim 19 wherein said acid or its ester forming reactive derivative is terephthalic acid.
Claim 22
Dependent Claim
12 words
The composition of claim 1 wherein said polyol of (ii) is 1,4-cyclohexanedimethanol.
Claim 23
Dependent Claim
23 words
The composition of claim 21 wherein said acid or its ester forming reactive derivative is a mixture of isophthalic acid and terephthalic acid.
Claim 24
Dependent Claim
32 words
The composition of claim 1 wherein said copolyester-carbonate resin of (i) is comprised of the reaction products of at least one dihydric phenol, a carbonate precursor, and at least one ester precursor.
Claim 25
Dependent Claim
11 words
The compsoition of claim 23 wherein said carbonate precursor is phosgene.
Claim 26
Dependent Claim
19 words
The composition of claim 24 wherein said ester precursor is selected from isophthaloyl dichloride, terephthaloyl dichloride, or mixtures thereof.
Claim 27
Dependent Claim
11 words
The composition of claim 25 wherein said dihydric phenol is bisphenol-A.
Claim 28
Dependent Claim
22 words
The composition of claim 26 wherein said copolyester-carbonate resin has an ester content of from about 70 to about 80 mole percent.
Claim 29
Dependent Claim
33 words
The composition of claim 27 wherein said ester content is comprised of from about 1 to about 10 mole percent terephthalic ester and from about 90 to about 99 mole percent isophthalic ester.
Claim 30
Dependent Claim
19 words
The composition of claim 1 which further contains a flame retardant amount of at least one flame retardant compound.
Claim 31
Dependent Claim
24 words
The composition of claim 29 wherein said flame retardant compound is selected from the alkali or alkaline earth metal salts of organic sulfonic acids.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |