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US4894415A
Expired / Lapsed
US
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Polyphenylene ether resin composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1987-09-10
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Granted: 1990-01-16
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Expires: 2007-09-10
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 mu m and a structure wherein 10 to 90% by weight of a polyorganosiloxane rubber component and 90 to 10% 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 100% 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
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:25
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: 11
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 10 to 90% by weight of a polyorganosiloxane rubber component and 90 to 10% 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 100% 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 10 to 90% by weight of a polyorganosiloxane rubber component and 90 to 10% 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 100% by weight of the compound rubber.
Claim 3
Dependent Claim
61 words
The polyphenylene ether resin composition of claim 1, wherein the compound rubber consists of a polyorganosiloxane rubber component prepared from an organosiloxane, and a crosslinking agent by emulsion polymerization and a polyalkyl (meth) acrylate rubber component prepared by impregnating the polyorganosiloxane rubber with an (meth)acrylate, a crosslinking agent, and a graft-linking agent, followed by polymerizing the acrylate together with these agents.
Claim 4
Dependent Claim
28 words
The polyphenylene ether resin composition of claim 1, wherein the gel content of the compound rubber is at least 80% by weight as measured by extraction with toluene.
Claim 5
Dependent Claim
17 words
The polyphenylene ether resin composition of claim 1, wherein the vinyl monomer is an aromatic alkenyl compound.
Claim 6
Dependent Claim
15 words
The polyphenylene ether resin composition of claim 4, wherein the aromatic alkenyl compound is styrene.
Claim 7
Dependent Claim
15 words
The polyphenylene ether resin composition of claim 1, wherein the vinyl monomer is a methacrylate.
Claim 8
Dependent Claim
14 words
The polyphenylene ether resin composition of claim 6, wherein the methacrylate is methyl methacrylate.
Claim 9
Dependent Claim
37 words
The polyphenylene ether resin composition of claim 1, which is composed of 20 to 80% by weight of component (A), 19 to 75% by weight of component (B), and 1 to 40% by weight of component (C).
Claim 10
Dependent Claim
64 words
The polyphenylene ether resin composition of claim 1, wherein the compound rubber consists of a polyorganosiloxane rubber component prepared from an organosiloxane, a crosslinking agent and 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 11
Dependent Claim
39 words
The polyphenylene ether resin composition of claim 1, 2 or 9, wherein the main skeleton of the polyorganosiloxane rubber component has repeating dimethylsiloxane units and the main skeleton of the polyalkyl (meth)acrylate rubber component has repeating n-butyl acrylate units.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-15 | 1993-07-17 | 1994-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-15 | 1997-07-17 | 1998-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-15 | 2001-07-17 | 2002-01-16 | $7700.00 | Window Closed / Lapsed |