US4349658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant aromatic polyester-carbonate copolymer compositions
Assignee: General Electric Co
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Filing: 1980-12-31
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Granted: 1982-09-14
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Expires: 2000-12-31
Abstract
Abstract Polyester-carbonate copolymers, blends of polyesters with polyester-carbonate copolymers and block copolymer compositions of polyester-carbonate copolymers have improved flame retardance when portions of the copolymer contain fluorinated diphenol copolymer. The fluorinated diphenol has at least one fluorinated alkyl or fluorinated aryl group upon the methylene carbon atom positioned between the aromatic ring structures of the diphenol. Polyester-carbonate copolymers, the blends of polyesters with the polyester-carbonate copolymers and block polymer compositions of polyester-carbonate copolymers are flame retardant.
Inventors
- 👤 Victor Mark
- 👤 Charles V. Hedges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:25
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/682
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
91 words
A high molecular weight polyester-carbonate copolymer composition of matter having improved flame resistance comprising bisphenol ester units and bisphenol-carbonate units, said bisphenol-carbonate units having the general formula: ##STR8## wherein R is selected from the group consisting of a fluorinated alkyl radical and a fluorinated aryl radical; R' is selected from the group consisting of fluorinated alkyl radical, fluorinated aryl radical, alkyl radical and hydrogen; and Y 1 , Y 2 , Y 3 and Y 4 are each independently selected from the group consisting of hydrogen, alkyl radical, chlorine and bromine.
Claim 2
Dependent Claim
91 words
A high molecular weight polyester-carbonate copolymer composition of matter having improved flame resistance comprising bisphenol ester units and bisphenol-carbonate units, said bisphenol-carbonate units having the general formula: ##STR8## wherein R is selected from the group consisting of a fluorinated alkyl radical and a fluorinated aryl radical; R' is selected from the group consisting of fluorinated alkyl radical, fluorinated aryl radical, alkyl radical and hydrogen; and Y 1 , Y 2 , Y 3 and Y 4 are each independently selected from the group consisting of hydrogen, alkyl radical, chlorine and bromine.
Claim 3
Dependent Claim
20 words
The high molecular weight polyester-carbonate copolymer of claim 1 wherein R is a straight chain or branched fluorinated alkyl radical.
Claim 4
Dependent Claim
24 words
The high molecular weight polyester-carbonate copolymer of claim 1, wherein R is a fluorinated alkyl radical having from 1 to about 22 carbon atoms.
Claim 5
Dependent Claim
19 words
The high molecular weight polyester-carbonate copolymer of claims 1, 2 or 3, wherein R is a perfluorinated alkyl radical.
Claim 6
Dependent Claim
24 words
The high molecular weight polyester-carbonate copolymer of claim 1, wherein R is a fluorinated aryl radical having from 6 to about 16 carbon atoms.
Claim 7
Dependent Claim
16 words
The high molecular weight polyester-carbonate copolymer of claim 1, wherein R is a perfluorinated aryl radical.
Claim 8
Dependent Claim
22 words
The high molecular weight polyestercarbonate of claim 1, wherein R' is an alkyl radical having from 1 to about 6 carbon atoms.
Claim 9
Dependent Claim
23 words
The high molecular weight polyestercarbonate of claim 1 wherein R' is a fluorinated aryl radical having from 6 to about 16 carbon atoms.
Claim 10
Dependent Claim
23 words
The high molecular weight polyester-carbonate of claim 1 wherein R' is a fluorinated alkyl radical having from 1 to about 22 carbon atoms.
Claim 11
Dependent Claim
34 words
The high molecular weight polyester-carbonate copolymer of claim 1 wherein the alkyl radical of Y 1 , Y 2 , Y 3 or Y 4 is from about 1 to about 4 carbon atoms.
Claim 12
Dependent Claim
68 words
The high molecular weight polyester-carbonate copolymer of claim 1, wherein the bisphenol ester units have the general formula: ##STR9## wherein Ar is selected from the group consisting of meta-phenylene, meta-phenylene having halogen or monovalent lower alkyl groups thereon, para-phenylene and para-phenylene having halogen or monovalent lower alkyl groups thereon, and R, R', Y 1 , Y 2 , Y 3 and Y 4 are defined in claim 1.
Claim 13
Dependent Claim
13 words
The high molecular weight polyester-carbonate copolymer of claim 11, wherein Ar is: ##STR10##
Claim 14
Dependent Claim
13 words
The high molecular weight polyester-carbonate copolymer of claim 11, wherein Ar is: ##STR11##
Claim 15
Dependent Claim
82 words
The high molecular weight polyester-carbonate copolymer of claim 1, further comprising recurring units derived from at least one non-fluorinated bisphenol having the general formula: ##STR12## wherein Y 1 , Y 2 , Y 3 and Y 4 are defined in claim 1, and W is selected from the group consisting of C 1 -C 9 alkylene, C 2 -C 9 alkylidene, C 5 -C 15 cycloalkylene, C 5 -C 15 cycloalkylidene, a single bond, --O--, --S--, --SO--, --SO 2 -- and --CO--.
Claim 16
Dependent Claim
15 words
The high molecular weight polyester-carbonate copolymer of claim 14 wherein the non-fluorinated bisphenol is 4,4'-isopropylidenediphenol.
Claim 17
Dependent Claim
26 words
The high molecular weight polyester-carbonate copolymer of claims 1, 11 or 14 wherein the aromatic polyester units and the aromatic polycarbonate units occur in random-block order.
Claim 18
Dependent Claim
15 words
The high molecular weight polyester-carbonate copolymer of claim 1 wherein the fluorinated bisphenol is 4,4'-(1-methyltrifluoroethylidene)bisphenol.
Claim 19
Dependent Claim
15 words
The high molecular weight polyester-carbonate copolymer of claim 1 wherein the fluorinated bisphenol is 4,4'-(1H-trifluoroethylidene)bisphenol.
Claim 20
Dependent Claim
15 words
The high molecular weight polyester-carbonate copolymer of claim 1 wherein the fluorinated bisphenol is 4,4'-(1-trifluoromethyltrifluoroethylidene)bisphenol.
Claim 21
Dependent Claim
16 words
The high molecular weight polyester-carbonate copolymer of claim 1, further comprising a blend with a polyester.
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) | 1985-09-13 | 1986-03-15 | 1986-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-13 | 1990-03-15 | 1990-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-13 | 1994-03-15 | 1994-09-14 | $7700.00 | Window Closed / Lapsed |