Patent US4628074A successfully refreshed from Google Patents.
US4628074A
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Polycarbonate compositions
Assignee: General Electric Co
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Filing: 1985-11-14
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Granted: 1986-12-09
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Expires: 2005-11-14
Abstract
Abstract Resinous composition exhibiting improved impact strength consisting essentially of, in physical admixture: (i) a blend containing (a) at least one aromatic carbonate polymer, and (b) at least one amorphous copolyester resin; and (ii) an amount at least effective to improve the impact strength of said blend of at least one olefin diene terpolymer.
Inventors
- 👤 Omar M. Boutni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:43
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08L69/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
99 words
Resinous polycarbonate composition exhibiting improved impact strength consisting essentially of, in physical admixture: (i) a blend consisting essentially of (a) at least one aromatic polycarbonate resin, and (b) at least one copolyester resin containing the reaction products of (A) at least one polyol selected from 1,4-cyclohexanedimethanol or a mixture of 1,4-cyclohexanedimathanol 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 (ii) an amount at least effective to improve the impact strength of said blend of at least one olefin diene terpolymer.
Claim 2
Dependent Claim
99 words
Resinous polycarbonate composition exhibiting improved impact strength consisting essentially of, in physical admixture: (i) a blend consisting essentially of (a) at least one aromatic polycarbonate resin, and (b) at least one copolyester resin containing the reaction products of (A) at least one polyol selected from 1,4-cyclohexanedimethanol or a mixture of 1,4-cyclohexanedimathanol 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 (ii) an amount at least effective to improve the impact strength of said blend of at least one olefin diene terpolymer.
Claim 3
Dependent Claim
32 words
The composition of claim 1 wherein said amount of said olefin diene terpolymer is from about 1 to about 25 weight percent, based on the total amounts of (i) and (ii) present.
Claim 4
Dependent Claim
17 words
The composition of claim 2 wherein said amount is from about 2 to about 20 weight percent.
Claim 5
Dependent Claim
17 words
The composition of claim 3 wherein said amount is from about 3 to about 15 weight percent.
Claim 6
Dependent Claim
16 words
The composition of claim 1 wherein said olefin diene terpolymer is an ethylene propylene diene terpolymer.
Claim 7
Dependent Claim
11 words
The composition of claim 5 wherein said diene is a norbornene.
Claim 8
Dependent Claim
10 words
The composition of claim 6 wherein said norbornene is norbornene.
Claim 9
Dependent Claim
11 words
The composition of claim 6 wherein said norbornene is ethylidene norbornene.
Claim 10
Dependent Claim
18 words
The composition of claim 1 wherein said polyol is selected from a mixture of 1,4-cyclohexanedimethanol and ethylene glycol.
Claim 11
Dependent Claim
21 words
The composition of claim 9 wherein the molar ratio of said 1,4-cyclohexanedimethanol to ethylene glycol is from 4:1 to about 1:4.
Claim 12
Dependent Claim
26 words
The composition of claim 10 wherein said aromatic dicarboxylic acid or its ester forming reactive derivative is selected from a mixture of isophthalic and terephthalic acids.
Claim 13
Dependent Claim
83 words
The composition of claim 1 wherein said aromatic polycarbonate resin contains at least the following recurring structural unit ##STR4## wherein R is independently selected from monovalent hydrocarbon radicals, monovalent hydrocarbonoxy radicals, and halogen radicals, R' is independently selected from monovalent hydrocarbon radicals, monovalent hydrocarbonoxy radicals, or halogen radicals, W is selected from divalent hydrocarbon radicals, --O--, --S--, --S--S--, ##STR5## b is either zero or one, and n and n' are independently selected from integers having a value of from 0 to 4 inclusive.
Claim 14
Dependent Claim
9 words
The composition of claim 12 wherein b is one.
Claim 15
Dependent Claim
22 words
The composition of claim 13 wherein said divalent hydrocarbon radical represented by W is selected from alkylene, alkylidene, cycloalkylene, or cycloalkylidene radicals.
Claim 16
Dependent Claim
12 words
The composition of claim 14 wherein W is selected from alkylidene radicals.
Claim 17
Dependent Claim
11 words
The composition of claim 15 wherein said alkylidene radical is 2,2-propylidene.
Claim 18
Dependent Claim
11 words
The composition of claim 16 wherein n and n' are zero.
Claim 19
Dependent Claim
18 words
The composition of claim 1 which contains a flame retardant amount of at least one flame retardant additive.
Claim 20
Dependent Claim
24 words
The composition of claim 18 wherein said flame reatardant additive is selected from the alkali or alkaline earth metal salts of organic sulfonic acids.
References Cited (Backward Citations)
US4559388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1989-12-08 | 1990-06-09 | 1990-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-08 | 1994-06-09 | 1994-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-08 | 1998-06-09 | 1998-12-09 | $7700.00 | Window Closed / Lapsed |