Patent EP0260552A2 successfully refreshed from Google Patents.
EP0260552A2
Expired / Lapsed
EP
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Graft copolymer rubber and polyphenylene ether resin composition comprising this rubber.
Assignee: Mitsubishi Chemical Corp
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Filing: 1987-09-04
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Granted: —
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Expires: 2007-09-04
Abstract
Abstract A polyphenylene ether resin composition comprising (A) a polyphenylene ether resin, (B) a polystyrene resin, and (C) a graft copolymer prepared by graft-polymerizing one or more vinyl monomers onto a compound rubber having an average particle diameter of 0.08 to 0.6 µm and a structure wherein l0 to 90% by weight of a polyorganosiloxane rubber component and 90 to l0% by weight of a polyalkyl (meth)acrylate rubber component are tangled with each other so as not to separate, the total amount of the polyorganosiloxane rubber component and the polyalkyl (meth)acrylate rubber component being l00% by weight of the compound rubber. This resin composition provides molded products superior in impact resistance, heat resistance, mechanical strength, and surface appearance and is superior in moldability and flow properties.
Inventors
- 👤 Isao Sasaki
- 👤 Naoki Yamamoto
- 👤 Akira Yanagase
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 18:06
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L51/00; C08L51/04; C08F; C08F285/00; C08L71/123; C08L71/126; C08L83/00; C08L83/10
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
100 words
A polyphenylene ether resin composition comprising (A) a polyphenylene ether resin, (B) a polystyrene resin, and (C) a graft copolymer prepared by graft-polymerizing one or more vinyl monomers onto a compound rubber having an average particle diameter of 0.08 to 0.6 µm and a structure wherein l0 to 90% by weight of a polyorganosiloxane rubber component and 90 to l0% by weight of a polyalkyl (meth)acrylate rubber component are tangled with each other so as not to separate, the total amount of the polyorganosiloxane rubber component and the polyalkyl (meth)acrylate rubber component being l00% by weight of the compound rubber.
Claim 2
Dependent Claim
100 words
A polyphenylene ether resin composition comprising (A) a polyphenylene ether resin, (B) a polystyrene resin, and (C) a graft copolymer prepared by graft-polymerizing one or more vinyl monomers onto a compound rubber having an average particle diameter of 0.08 to 0.6 µm and a structure wherein l0 to 90% by weight of a polyorganosiloxane rubber component and 90 to l0% by weight of a polyalkyl (meth)acrylate rubber component are tangled with each other so as not to separate, the total amount of the polyorganosiloxane rubber component and the polyalkyl (meth)acrylate rubber component being l00% by weight of the compound rubber.
Claim 3
Dependent Claim
66 words
The polyphenylene ether resin composition of claim l, wherein the compound rubber consists of a polyorganosiloxane rubber component prepared from an organosiloxane, a crosslinking agent, and if necessary, a graft-linking agent by emulsion polymerization and a polyalkyl (meth)acrylate rubber component prepared by impregnating the polyorganosiloxane rubber with an alkyl (meth)acrylate, a crosslinking agent, and a graft-linking agent, followed by polymerizing the acrylate together with these agents.
Claim 4
Dependent Claim
39 words
The polyphenylene ether resin composition of Claim l or 2, wherein the main skeleton of the polyorgano siloxane rubber component has repeating dimethylsiloxane units and the main skeleton of the polyalkyl (meth)acrylate rubber component has repeating n-butyl acrylate units.
Claim 5
Dependent Claim
28 words
The polyphenylene ether resin composition of Claim l, wherein the gel content of the compound rubber is at least 80% by weight as measured by extraction with toluene.
Claim 6
Dependent Claim
17 words
The polyphenylene ether resin composition of Claim l, wherein the vinyl monomer is an aromatic alkenyl compound.
Claim 7
Dependent Claim
15 words
The polyphenylene ether resin composition of Claim 5, wherein the aromatic alkenyl compound is styrene.
Claim 8
Dependent Claim
15 words
The polyphenylene ether resin composition of Claim l, wherein the vinyl monomer is a methacrylate.
Claim 9
Dependent Claim
14 words
The polyphenylene ether resin composition of Claim 7, wherein the methacrylate is methyl methacrylate.
Claim 10
Dependent Claim
37 words
The polyphenylene ether resin composition of Claim l, which is composed of 20 to 80% by weight of component (A), l9 to 75% by weight of component (B), and l to 40% by weight of component (C).
Claim 11
Dependent Claim
17 words
l0. The polyphenylene ether resin composition of Claim l, which contains additionally a phosphoric ester flame retarder.
Claim 12
Dependent Claim
17 words
The polyphenylene ether resin composition of Claim l0, wherein the phosphoric ester flame retarder is triphenyl phosphate.
Claim 13
Dependent Claim
68 words
The polyphenylene ether resin composition of Claim l0, which is composed of l00 parts by weight of the resin blend comprising 20 to 80% by weight of component (A), l9 to 75% by weight of component (B), l to 40% by weight of component (C), and 0.5 to 35 parts by weight of a phosphoric ester flame retarder per l00 parts by by weight of the resin blend.
Claim 14
Dependent Claim
13 words
The polyphenylene ether resin composition of Claim l, which contains additionally glass fiber.
Claim 15
Dependent Claim
64 words
The polyphenylene ether resin composition of Claim l3, which is composed of l00 parts by weight of the resin blend comprising 20 to 80% by weight of component (A), l9 to 75% by weight of component (B), l to 40% by weight of component (C), and 5 to l00 parts by weight of glass fiber per l00 parts by weight of the resin blend.
Claim 16
Dependent Claim
19 words
The polyphenylene ether resin composition of Claim l, which contains additionally a phosphoric ester flame retarder and glass fiber.
Claim 17
Dependent Claim
17 words
The polyphenylene ether resin composition of Claim l5, wherein the phosphoric ester flame retarder is triphenyl phosphate.
Claim 18
Dependent Claim
77 words
The polyphenylene ether resin composition of Claim l5, which is composed of l00 parts by weight of the resin blend comprising 20 to 80% by weight of component (A), l9 to 75% by weight of component (B), l to 40% by weight of component (C), and 0.5 to 35 parts by weight of a phosphoric ester flame retarder and 5 to l00 parts by weight of glass fiber per l00 parts by weight of the resin blend.
References Cited (Backward Citations)
No citation records indexed.
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