EP0501347A2
Expired / Lapsed
EP
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Thermoplastic siloxane-polycarbonate resin composition
Assignee: Mitsubishi Gas Chemical Co Inc
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Filing: 1992-02-21
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Granted: —
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Expires: 2012-02-21
Abstract
Abstract A thermoplastic resin composition comprising (a) 100 parts by weight of thermoplastic copolycarbonate comprising 0.1 to 50% by weight of structural unit of the following general formula (1) and 99.9 to 50% by weight of structural unit of the following general formula (2): and (b) 0.1 to 30 parts by weight of electroconductive carbon black can produce a molding product having good mechanical properties and surface smoothness with good moldability.
Inventors
- 👤 Toshiaki c/o Mitsubishi Gas Chemical Takata
- 👤 Tadami c/o Mitsubishi Gas Chemical Kinugawa
- 👤 Hideo c/o Mitsubishi Gas Chemical Otaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 11:09
CPC Classifications
C; C08; C08L; C08L69/00; C08K; C08K3/00; C08K3/02; C08K3/04; C08L83/00; C08L83/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
166 words
A thermoplastic resin composition which comprises 100 parts by weight of (a) thermoplastic copolycarbonate resin comprising 0.1 to 50% by weight of structural unit represented by the following general formula (1) and 99.9% to 50% by weight of structural unit represented by the following general formula (2): wherein R¹ is an alkylene group having 2 to 6 carbon atoms or an alkylidene group having 2 to 6 carbon; R² and R³ each are an alkyl group having 1 to 3 carbon atoms, a phenyl group or a substituted phenyl group; n is an integer of 1 to 200; A is a straight, branched or cyclic alkylidene group having 1 to 10 carbon atoms, an aryl-substituted alkylidene group, an arylenedialkylidene group, -O-, -S-, -CO-, or -SO₂-; R⁴, R⁵, R⁶ and R⁷ each are hydrogen, a halogen, an alkyl group having 1 to 4 carbon atoms or an alkenyl group having 1 to 4 carbon atoms, and (b) 0.1 to 30 parts by weight of electroconductive carbon black.
Claim 2
Dependent Claim
35 words
A thermoplastic resin composition according to Claim 1, wherein R¹ is an alkylene group having 2 to 6 carbon atoms and R² and R³ each are an alkyl group having 1 to 3 carbon atoms.
Claim 3
Dependent Claim
24 words
A thermoplastic resin composition according to Claim 1, wherein the structural unit of the general formula (2) is derived from 2,2-bis(4-hydroxyphenyl)propane and 1,1-bis(4-hydroxyphenyl) cyclohexane.
Claim 4
Dependent Claim
26 words
A thermoplastic resin composition according to Claim 1, wherein the structural unit of the general formula (2) is derived from at least two kinds of bisphenols.
Claim 5
Dependent Claim
28 words
A thermoplastic resin composition according to Claim 4, wherein the structural unit of the general formula (2) is derived from a combination of 2,2-bis(4-hydroxyphenyl)propane and bis(4-hydroxyphenyl)ether or bis(4-hydroxyphenyl)sulfide.
Claim 6
Dependent Claim
24 words
A thermoplastic resin composition according to Claim 1, wherein the thermoplastic copolycarbonate resin (a) has a viscosity average molecular weight of 10,000 to 50,000.
Claim 7
Dependent Claim
58 words
A thermoplastic resin composition according to Claim 1, which further contains 1 to 40% by weight of (c) thermoplastic polyester resin on the basis of sum total of the thermoplastic copolycarbonate resin (a) and the thermoplastic polyester resin (c) and contains 0.1 to 30 parts by weight of the electroconductive carbon black on the same basis of (a)+(c).
Claim 8
Dependent Claim
20 words
A thermoplastic resin composition according to Claim 1, wherein the thermoplastic polyester resin (c) is polyethylene terephthalate or polybutylene terephthalate.
Claim 9
Dependent Claim
60 words
a thermoplastic resin composition according to Claim 1, which further contains 1 to 50% by weight of (d) thermoplastic aromatic vinyl copolymer on the basis of sum total of the thermoplastic copolycarbonate resin (a) and the thermoplastic aromatic vinyl copolymer (d) and contains 0.1 to 30 parts by weight of the electroconductive carbon black on the same basis of (a)+(d).
References Cited (Backward Citations)
No citation records indexed.
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