Patent US5488086A successfully refreshed from Google Patents.
US5488086A
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Polycarbonate resin composition
Assignee: Idemitsu Kosan Co Ltd
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Filing: 1991-12-25
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Granted: 1996-01-30
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Expires: 2011-12-25
Abstract
Abstract PCT No. PCT/JP91/01755 Sec. 371 Date Jul. 28, 1992 Sec. 102(e) Date Jul. 28, 1992 PCT Filed Dec. 25, 1991 PCT Pub. No. WO92/12208 PCT Pub. Date Jul. 23, 1992.A polycarbonate resin composition which is superior in impact resistance, fluidity, solvent resistance, wear resistance and sliding characteristics. The polycarbonate resin composition comprises (A) a mixture of polycarbonate (PC) and a polycarbonate-polydimethylsiloxane (PC-PDMS) copolymer and (B) at least one of (i) a thermoplastic resin such as a thermoplastic crystalline resin or a thermoplastic amorphous resin and (ii) a rubber elastomer.
Inventors
- 👤 Takashi Umeda
- 👤 Masaya Okamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:06
CPC Classifications
C; C08; C08L; C08L69/00; C08L101/00; C08L83/00; C08L83/10
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
181 words
A polycarbonate resin composition which comprises (A) a mixture of polycarbonate and a polycarbonate/polydimethylsiloxane copolymer comprising a polycarbonate block of the formula (a): ##STR8## wherein R 1 and R 2 independently are hydrogen, an alkyl group having 1 to 4 carbon atoms, R 3 and R 4 independently are a halogen, an alkyl group having 1 to 20 carbon atoms or an aryl group, x is an integer of at most 5, y is an integer of at most 4, and n is an integer of 1 to 100, and a polydimethylsiloxane block of the formula (b): ##STR9## wherein R 5 and R 6 independently are a 3-(o-hydroxyphenyl)propyl group, a 2-(p-hydroxyphenyl)ethyl group or a group represented by the formula ##STR10## and m is an integer of more than 100, said copolymer mixture having 0.5 to 10% by weight of the polydimethylsiloxane block, 1.0% by weight or less of an n-hexane soluble matter content, and a viscosity average molecular weight of 10,000 to 50,000, and (B) at least one selected from the group consisting of a thermoplastic resin and a rubber elastomer.
Claim 2
Dependent Claim
181 words
A polycarbonate resin composition which comprises (A) a mixture of polycarbonate and a polycarbonate/polydimethylsiloxane copolymer comprising a polycarbonate block of the formula (a): ##STR8## wherein R 1 and R 2 independently are hydrogen, an alkyl group having 1 to 4 carbon atoms, R 3 and R 4 independently are a halogen, an alkyl group having 1 to 20 carbon atoms or an aryl group, x is an integer of at most 5, y is an integer of at most 4, and n is an integer of 1 to 100, and a polydimethylsiloxane block of the formula (b): ##STR9## wherein R 5 and R 6 independently are a 3-(o-hydroxyphenyl)propyl group, a 2-(p-hydroxyphenyl)ethyl group or a group represented by the formula ##STR10## and m is an integer of more than 100, said copolymer mixture having 0.5 to 10% by weight of the polydimethylsiloxane block, 1.0% by weight or less of an n-hexane soluble matter content, and a viscosity average molecular weight of 10,000 to 50,000, and (B) at least one selected from the group consisting of a thermoplastic resin and a rubber elastomer.
Claim 3
Dependent Claim
23 words
The polycarbonate resin composition according to claim 1, wherein the thermoplastic resin (B) is a thermoplastic crystalline resin or a thermoplastic amorphous resin.
Claim 4
Dependent Claim
35 words
The polycarbonate resin according to claim 2, which comprises (A) 1 to 99% by weight of said mixture and said (B) is a thermoplastic crystalline resin in an amount of 99 to 1% by weight.
Claim 5
Dependent Claim
32 words
The polycarbonate resin composition according to claim 3, wherein said (B) is a thermoplastic crystalline resin selected from the group consisting of a polyester resin, a polyamide resin and a polyolefin resin.
Claim 6
Dependent Claim
36 words
The polycarbonate resin composition according to claim 2, which comprises (A) 1 to 99% by weight of said mixture and said (B) is a thermoplastic amorphous resin in an amount of 99 to 1% by weight.
Claim 7
Dependent Claim
40 words
The polycarbonate resin composition according to claim 5, wherein said (b) is at least one thermoplastic amorphous resin selected from the group consisting of general purpose polystyrene resin, high impact resistant polystyrene resin, styrene-maleic acid anhydride copolymer and acrylonitrile-butadiene-styrene resin.
Claim 8
Dependent Claim
23 words
The polycarbonate resin composition according to claim 1, wherein R 5 and R 6 are independently a 3-(o-hydroxyphenyl)propyl group or a 2-(p-hydroxyphenyl)ethyl group.
Claim 9
Dependent Claim
17 words
The polycarbonate resin composition according to claim 1, wherein R 5 and R 6 are independently ##STR11##
Claim 10
Dependent Claim
30 words
The polycarbonate resin composition according to claim 1, which comprises (A) 40 to 99% by weight of said mixture and (B) 60 to 1% by weight of a rubber elastomer.
Claim 11
Dependent Claim
16 words
The polycarbonate resin composition according to claim 1, wherein m is more than 100 to 400.
Claim 12
Dependent Claim
21 words
The polycarbonate resin composition according to claim 10, wherein the polydimethylsiloxane is in an amount of 1 to 10% by weight.
Claim 13
Dependent Claim
18 words
The polycarbonate resin composition according to claim 11, wherein the viscosity average molecular weight is 12,000 to 30,000.
Claim 14
Dependent Claim
72 words
The polycarbonate resin composition according to claim 12, wherein said (B) is selected from the group consisting of polyethylene terephthalate; polybutylene terephthalate; Nylon-6; Nylon-4,6; Nylon 6,6; Nylon-6,10; Nylon 6,12; Nylon-11, Nylon-12; Nylon 6/6,6 copolymer; a homopolymer of an α-olefin selected from the group consisting of ethylene, propylene, butene-1, isobutylene, pentene 1,3-methybutene-1,4-methylpentene-1, hexene-1 and octene; an ethyelene-propylene copolymer; an ethylene-vinyl acetate copolymer; an ethylene-methyl acrylate copolymer; an ethylene-ethylacrylate copolymer and ethylene-methyl methacrylate copolymer.
Claim 15
Dependent Claim
87 words
The polycarbonate resin composition according to claim 12, wherein said (B) is low density polyethylene, high density polyethylene, isotactic polypropylene, atactic polypropylene, polystyrene, styrene-maleic acid anhydride copolymer, acrylonitrile-butadiene-styrene, polybutadiene, styrene-butadiene-styrene, styrene-butadiene rubber, butadiene-acryl rubber, isoprene rubber, isoprene-styrene rubber, isoprene-acryl rubber, ethylene-propylene rubber, natural rubber, butyl rubber, nitrile-butadiene rubber, nitrile-isoprene rubber, chloroprene rubber, isobutylene-isoprene rubber, ethylene-propylene rubber, ethylene-propylene diene rubber, chlorosulfonated polyethylene rubber, halogenated butyl rubber, urethane rubber, copolymer of alkyl acrylate and acrylonitrile, silicone rubber, fluorine rubber, polyester-polyether-polyester block copolymer rubber epichlorohydrin rubber, and ethylene-vinyl acetate rubber.
Claim 16
Dependent Claim
38 words
The polycarbonate resin composition according to claim 12, wherein said (A) is in an amount of 30 to 95% by weight and said (B) is a thermoplastic crystalline resin in an amount of 70 to 5% by weight.
Claim 17
Dependent Claim
37 words
The polycarbonate resin composition according to claim 12, wherein said (A) is in an amount of 40 to 99% by weight and said (B) is a rubber elastomer in an amount of 60 to 1% by weight.
Claim 18
Dependent Claim
34 words
The polycarbonate resin composition according to claim 16, wherein said (A) is in an amount of 5 to 95% by weight and said (B) is in an amount of 50 to 5% by weight.
Claim 19
Dependent Claim
18 words
The polycarbonate resin composition according to claim 12, wherein the n-hexane soluble matter content is 0.3% by weight.
Claim 20
Dependent Claim
18 words
The polycarbonate resin composition according to claim 12, wherein the n-hexane soluble matter content is 0.4% by weight.
Claim 21
Dependent Claim
14 words
The polycarbonate resin composition according to claim 5, wherein said (B) is polystyrene resin.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1999-01-29 | 1999-07-31 | 2000-01-30 | $2000.00 | Window Closed / Lapsed |
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