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US4155949A
Expired / Lapsed
US
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Fire retardant polycarbonate resin composition
Assignee: Mitsubishi Gas Chemical Co Inc
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Filing: 1977-05-13
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Granted: 1979-05-22
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Expires: 1997-05-13
Abstract
Abstract A fire retardant polycarbonate resin composition comprises diantimony tetroxide and a polycarbonate member selected from the class of halogenated polycarbonates and a mixture of (1) a halogen compound and (2) a polycarbonate.
Inventors
- 👤 Seiichi Kamiyama
- 👤 Mitsuo Miura
- 👤 Koji Takenaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:53
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/2279; C08L; C08L101/00; C08L69/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
105 words
A fire retardant polycarbonate resin composition having improved thermal stability and impact strength which comprises antimony tetroxide and a polycarbonate member selected from the halogen-containing class of (A) halogenated polycarbonates wherein the halogen is bromo or chloro and (B) a mixture of (1) an organic halogen compound containing at least 30 percent by weight of halogen and the decomposition temperature of which is not lower than 250° C., wherein the halogen is bromo or chloro and (2) a polycarbonate, the amount of diantimony tetroxide in (A) and the amount of halogen compound and antimony tetroxide in (B) being sufficient to retard fire in the composition.
Claim 2
Dependent Claim
105 words
A fire retardant polycarbonate resin composition having improved thermal stability and impact strength which comprises antimony tetroxide and a polycarbonate member selected from the halogen-containing class of (A) halogenated polycarbonates wherein the halogen is bromo or chloro and (B) a mixture of (1) an organic halogen compound containing at least 30 percent by weight of halogen and the decomposition temperature of which is not lower than 250° C., wherein the halogen is bromo or chloro and (2) a polycarbonate, the amount of diantimony tetroxide in (A) and the amount of halogen compound and antimony tetroxide in (B) being sufficient to retard fire in the composition.
Claim 3
Dependent Claim
21 words
A fire retardant polycarbonate resin composition according to claim 1 in which the polycarbonate has bis(hydroxyaryl) alkane as a monomeric unit.
Claim 4
Dependent Claim
20 words
A fire retardant polycarbonate resin composition according to claim 2 in which the polycarbonate contains at least 70 carbonate bonds.
Claim 5
Dependent Claim
27 words
A fire retardant polycarbonate resin composition according to claim 1 in which the halogenated polycarbonate contains at least one nuclear halogenated bis(hydroxyaryl) alkane as a monomeric unit.
Claim 6
Dependent Claim
20 words
A fire retardant polycarbonate resin composition according to claim 4 in which the polycarbonate contains at least 70 carbonate bonds.
Claim 7
Dependent Claim
31 words
A fire retardant polycarbonate resin composition according to claim 4 in which the nuclear halogenated bis(hydroxyaryl) alkane is selected from a nuclear brominated bis(hydroxyaryl) alkane and a nuclear chlorinated bis(hydroxyaryl) alkane.
Claim 8
Dependent Claim
23 words
A fire retardant polycarbonate resin composition according to claim 2 in which the bis(hydroxyaryl) alkane is selected from 2,2-bis(4-hydroxyphenyl) propane and bis(4-hydroxyphenyl) methane.
Claim 9
Dependent Claim
25 words
A fire retardant polycarbonate resin composition according to claim 4 in which the nuclear halogenated bis(4-hydroxyaryl) alkane is selected from 2,2-bis(4-hydroxy-3,5-dibromophenyl) propane and 2,2-bis(4-hydroxy-3,5-dichlorophenyl) propane.
Claim 10
Dependent Claim
23 words
A fire retardant polycarbonate resin composition according to claim 4 in which the bis(4-hydroxyaryl) alkane is selected from 2,2-bis(4-hydroxyphenyl) propane and bis(4-hydroxyphenyl) methane.
Claim 11
Dependent Claim
38 words
A fire retardant polycarbonate resin composition according to claim 1 in which the organic halogen compound is selected from the class of hexabromobenzene, hexabromobiphenyl, 2,2-bis(4-hydroxy-3,5-dibromophenyl) propane, perchloropentacyclodecane, pentabromotoluene, pentabromophenol, tetrabromophthalic anhydride, pentachlorophenol, pentachlorotoluene, decachlorodiphenyl ether and decabromodiphenyl ether.
Claim 12
Dependent Claim
37 words
A fire retardant polycarbonate resin composition according to claim 1 in which the diantimony tetroxide is contained in an amount of 0.1-50 parts by weight per 100 parts by weight of the polycarbonate or the halogenated polycarbonate.
Claim 13
Dependent Claim
34 words
A fire retardant polycarbonate resin composition according to claim 11 in which the amount of diantimony tetroxide is 0.2-30 parts by weight per 100 parts by weight of the polycarbonate or the halogenated polycarbonate.
Claim 14
Dependent Claim
34 words
A fire retardant polycarbonate resin composition according to claim 11 in which the amount of diantimony tetroxide is 0.3-20 parts by weight per 100 parts by weight of the polycarbonate or the halogenated polycarbonate.
Claim 15
Dependent Claim
34 words
A fire retardant polycarbonate resin composition according to claim 1 in which the amount of the halogen compound is not more than 20 parts by weight per 100 parts by weight of the polycarbonate.
Claim 16
Dependent Claim
34 words
A fire retardant polycarbonate resin composition according to claim 14 in which the amount of the halogen compound is not more than 15 parts by weight per 100 parts by weight of the polycarbonate.
Claim 17
Dependent Claim
34 words
A fire retardant polycarbonate resin composition according to claim 14 in which the amount of the halogen compound is not more than 10 parts by weight per 100 parts by weight of the polycarbonate.
Claim 18
Dependent Claim
28 words
A fire retardant polycarbonate resin composition according to claim 1 in which there is additionally contained a thermoplastic resin selected from styrene resins, polyolefine resins, and polyester resins.
Claim 19
Dependent Claim
27 words
A fire retardant polycarbonate resin composition according to claim 17 in which the styrene resin is selected from acrylonitrile-styrene copolymer, acrylonitrile-chlorostyrene copolymer, acrylonitrile-polybutadiene-styrene copolymer, and acrylonitrile-polybutadiene-chlorostyrene copolymer.
Claim 20
Dependent Claim
23 words
A fire retardant polycarbonate resin composition according to claim 17 in which the polyolefine resin is selected from polyethylene, polypropylene and polyvinyl chloride.
Claim 21
Dependent Claim
61 words
A fire retardant polycarbonate resin composition which comprises diantimony tetroxide, a brominated or chlorinated polycarbonate, and an organic halogen compound containing at least 30 percent by weight of halogen and the decomposition temperature of which is not lower than 250° C., wherein the halogen is bromo or chloro, the amount of diantimony tetroxide being sufficient to retard fire in the composition.
Claim 22
Dependent Claim
61 words
A fire retardant polycarbonate resin composition which comprises diantimony tetroxide, a brominated or chlorinated polycarbonate, and an organic halogen compound containing at least 30 percent by weight of halogen and the decomposition temperature of which is not lower than 250° C., wherein the halogen is bromo or chloro, the amount of diantimony tetroxide being sufficient to retard fire in the composition.
Claim 23
Dependent Claim
35 words
A fire retardant polycarbonate resin composition according to claim 20 in which the amount of the halogen compound is not more than 20 parts by weight per 100 parts by weight of the halogenated polycarbonate.
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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) | 1982-05-21 | 1982-11-20 | 1983-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-21 | 1986-11-20 | 1987-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-21 | 1990-11-20 | 1991-05-22 | $7700.00 | Window Closed / Lapsed |