US4379910A
Expired / Lapsed
US
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Flame retardant aromatic polycarbonate compositions made from fluorinated diphenols
Assignee: General Electric Co
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Filing: 1980-12-31
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Granted: 1983-04-12
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Expires: 2000-12-31
Abstract
Abstract Improved flame retardance is imparted to high molecular weight aromatic polycarbonate resins by selecting appropriate fluorinated diphenols and incorporating them in homopolymers or copolymers. The fluorinated diphenols have at least one fluorinated alkyl or fluorinated aryl group upon the methylene carbon atom positioned between the two phenol ring structures. The polycarbonates having improved flame retardance are made from fluorinated diphenols and halogen-containing carbonate precursors. Copolycarbonates having improved flame retardance are derived from the fluorinated diphenols and non-fluorinated diphenols. The flame retardant polycarbonates may be used in films and molded articles where improved resistance to flame is desirable.
Inventors
- 👤 Victor Mark
- 👤 Charles V. Hedges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:09
CPC Classifications
C; C08; C08L; C08L69/00
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
96 words
A high-molecular weight aromatic polycarbonate having improved flame-retardance, said polycarbonate having the general formula: ##STR7## wherein n is an integer from 5 to 1,000; R is a radical selected from the group consisting of a fluorinated alkyl radical having from three to about twenty-two carbon atoms 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
96 words
A high-molecular weight aromatic polycarbonate having improved flame-retardance, said polycarbonate having the general formula: ##STR7## wherein n is an integer from 5 to 1,000; R is a radical selected from the group consisting of a fluorinated alkyl radical having from three to about twenty-two carbon atoms 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
18 words
The high-molecular weight polycarbonate of claim 1, wherein R is a straight chain or branched fluorinated alkyl radical.
Claim 4
Dependent Claim
14 words
The high-molecular weight polycarbonate of claim 1, wherein R is a perfluorinated alkyl radical.
Claim 5
Dependent Claim
22 words
The high-molecular weight polycarbonate of claim 1, wherein R is a fluorinated aryl radical having from 6 to about 16 carbon atoms.
Claim 6
Dependent Claim
16 words
The high-molecular weight polycarbonate of claims 1 or 4, wherein R is a perfluorinated aryl radical.
Claim 7
Dependent Claim
21 words
The high-molecular weight polycarbonate of claim 1, wherein R' is an alkyl radical having from 1 to about 6 carbon atoms.
Claim 8
Dependent Claim
32 words
The high-molecular weight polycarbonate 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 9
Dependent Claim
142 words
A high-molecular weight copolycarbonate composition of matter having improved flame retardance comprising units derived from: (a) a fluorinated bisphenol having the general formula: ##STR8## (b) a non-fluorinated bisphenol having the general formula: ##STR9## wherein R is a radical 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; Y 1 , Y 2 , Y 3 and Y 4 are each independently selected from the group consisting of hydrogen, alkyl radical, chlorine and bromine; 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-- and (c) a carbonate precursor.
Claim 10
Dependent Claim
142 words
A high-molecular weight copolycarbonate composition of matter having improved flame retardance comprising units derived from: (a) a fluorinated bisphenol having the general formula: ##STR8## (b) a non-fluorinated bisphenol having the general formula: ##STR9## wherein R is a radical 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; Y 1 , Y 2 , Y 3 and Y 4 are each independently selected from the group consisting of hydrogen, alkyl radical, chlorine and bromine; 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-- and (c) a carbonate precursor.
Claim 11
Dependent Claim
49 words
The high-molecular weight copolycarbonate of claim 8, having the formula: ##STR10## wherein R, R', Y 1 , Y 2 , Y 3 , Y 4 and W are defined in claim 8; m and m' are integers from 1 to 1,000; and m and m' is at least 5.
Claim 12
Dependent Claim
26 words
The high-molecular weight polycarbonate copolymer of claims 8 or 9, wherein R is a fluorinated alkyl radical having from about 1 to about 22 carbon atoms.
Claim 13
Dependent Claim
17 words
The high-molecular weight polycarbonate copolymer of claims 8 or 9, wherein R is a perfluorinated alkyl radical.
Claim 14
Dependent Claim
24 words
The high-molecular weight polycarbonate of claims 8 or 9, wherein R is a fluorinated aryl radical having from 6 to about 16 carbon atoms.
Claim 15
Dependent Claim
16 words
The high-molecular weight polycarbonate of claims 8 or 9, wherein R is a perfluorinated aryl radical.
Claim 16
Dependent Claim
23 words
The high-molecular weight polycarbonate of claims 8 or 9, wherein R' is an alkyl radical having from 1 to about 6 carbon atoms.
Claim 17
Dependent Claim
13 words
The high-molecular weight polycarbonate of claim 8, wherein the non-fluorinated bisphenol is 4,4'-isopropylidenediphenol.
Claim 18
Dependent Claim
35 words
The high-molecular weight polycarbonate copolymer of claims 8 or 9, wherein the alkyl radical of Y 1 , Y 2 , Y 3 or Y 4 is from about 1 to about 4 carbon atoms.
Claim 19
Dependent Claim
13 words
The high-molecular weight polycarbonate of claim 8, wherein the fluorinated bisphenol is 4,4'-(1H-trifluoroethylidene)bisphenol.
Claim 20
Dependent Claim
13 words
The high-molecular weight polycarbonate of claim 8, wherein the fluorinated bisphenol is 4,4'-(1-methyltrifluoroethylidene)bisphenol.
Claim 21
Dependent Claim
13 words
The high-molecular weight polycarbonate of claim 8, wherein the fluorinated bisphenol is 4,4'-(1-trifluoromethyltrifluoroethylidene)bisphenol.
Claim 22
Dependent Claim
15 words
The high molecular weight polycarbonate of claim 1, wherein the polycarbonate is derived from 4,4'-(1H-1,1-perfluorobutylidene)bisphenol.
Claim 23
Dependent Claim
134 words
A composition comprising a blend of a. the high molecular weight aromatic polycarbonate having improved flame retardance, said polycarbonate having the general formula: ##STR11## wherein n is an integer from 5 to 1,000; R is an radical selected from the group consisting of a fluorinated alkyl radical and a fluorinated aryl radical; R 1 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; and b. a polymer selected from the group consisting of a polyester or non-fluorinated aromatic polycarbonate, said aromatic polycarbonate selected from the group consisting of linear aromatic polycarbonates, branched polycarbonates, and linear and branched aromatic polycarbonates.
Claim 24
Dependent Claim
134 words
A composition comprising a blend of a. the high molecular weight aromatic polycarbonate having improved flame retardance, said polycarbonate having the general formula: ##STR11## wherein n is an integer from 5 to 1,000; R is an radical selected from the group consisting of a fluorinated alkyl radical and a fluorinated aryl radical; R 1 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; and b. a polymer selected from the group consisting of a polyester or non-fluorinated aromatic polycarbonate, said aromatic polycarbonate selected from the group consisting of linear aromatic polycarbonates, branched polycarbonates, and linear and branched aromatic polycarbonates.
Claim 25
Dependent Claim
21 words
The composition of claim 21, wherein the polymer is the non-fluorinated aromatic polycarbonate, said non-fluorinated aromatic polycarbonate derived from 4,4'-isopropylidene diphenol.
Claim 26
Dependent Claim
10 words
The composition of claim 21 wherein the polymer is polyester.
Claim 27
Dependent Claim
23 words
The composition of claims 21, 22 or 23 wherein R is a fluorinated alkyl radical having from 1 to about 22 carbon atoms.
Claim 28
Dependent Claim
20 words
The blend of claims 21, 22 or 23 wherein the flame retardant high molecular weight polycarbonate is derived from 4,4'-(1H-trifluoroethylidene)bisphenol.
Claim 29
Dependent Claim
21 words
The blend of claims 21, 22 or 23 wherein the flame retardant high molecular weight polycarbonate is derived from 4,4'-(1H-1,1-perfluoro-butylidene) bisphenol.
Claim 30
Dependent Claim
20 words
The blend of claims 21, 22 or 23 wherein the flame retardant high molecular weight polycarbonate is derived from 4,4'-(1-trifluoromethyltrifluoroethylidene)bisphenol.
Claim 31
Dependent Claim
26 words
The composition of claim 8 wherein R is a fluorinated alkyl radical having from three to about twenty-two carbon atoms, inclusive, and a fluorinated aryl radical.
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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) | 1986-04-11 | 1986-10-11 | 1987-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-11 | 1990-10-11 | 1991-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-11 | 1994-10-11 | 1995-04-12 | $7700.00 | Window Closed / Lapsed |