EP0261574A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Curable cross-linked polyphenylene ether interpenetrating polymer network compositions and process
Assignee: General Electric Co
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Filing: 1987-09-16
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Granted: —
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Expires: 2007-09-16
Abstract
Abstract Curable compositions comprising a polyphenylene ether resin free of substituents which inhibit free radicals are combined with a polyvinyl unsaturated compound, such as poly(bisphenol-A fumarate) or divinyl benzene, and, optionally liquid polymerizable unsaturated monovinyl monomers, such as styrene, and cured with an optional catalyst to produce crosslinked interpolymers more rapidly than in the prior art. Before curing, the compositions can be combined with flame retardants, reinforcing fillers and/or impact modifiers.
Inventors
- 👤 Edward Norman Peters
- 👤 Dana Craig Bookbinder
- 👤 Daniel Wayne Fox
- 👤 Gary Francis Smith
- 👤 Douglas Patrick Thomas
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 00:39
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/08; C08F; C08F283/00; C08F283/06; C08F283/08; C08G; C08G65/00; C08G65/34; C08G65/48; C08G65/485; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/126; C08L67/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
152 words
A curable composition comprising: (i) a thermoplastic polyphenylene ether resin substantially free of substituents which are inhibitors of free radicals; (ii)(a) at least one polyvinyl unsaturated compound, alone, or in further combination with (ii)(b) at least one liquid, monovinyl unsaturated compound having a general formula selected from or a mixture of said compounds, wherein R is hydrogen or methyl, Z is hydrogen, halogen, alkyl or alkoxy and p is 0 or a whole number of from 1 to 3, alone, or in further combination with, (ii)(c) at least one liquid monovinyl unsaturated compound copolymerizable with and different from component (ii)(b), said vinyl unsaturated compounds (ii)(a), (ii)(b) and (ii)(c) comprising from about 1 to about 60 percent by weight of (i) and (ii)(a), (ii)(b) and (ii)(c) combined; and, optionally, (iii) an effective amount of a catalyst capable of generating free radicals to initiate polymerization of the vinyl unsaturated compounds (ii)(a), (ii)(b) and (ii)(c).
Claim 2
Dependent Claim
152 words
A curable composition comprising: (i) a thermoplastic polyphenylene ether resin substantially free of substituents which are inhibitors of free radicals; (ii)(a) at least one polyvinyl unsaturated compound, alone, or in further combination with (ii)(b) at least one liquid, monovinyl unsaturated compound having a general formula selected from or a mixture of said compounds, wherein R is hydrogen or methyl, Z is hydrogen, halogen, alkyl or alkoxy and p is 0 or a whole number of from 1 to 3, alone, or in further combination with, (ii)(c) at least one liquid monovinyl unsaturated compound copolymerizable with and different from component (ii)(b), said vinyl unsaturated compounds (ii)(a), (ii)(b) and (ii)(c) comprising from about 1 to about 60 percent by weight of (i) and (ii)(a), (ii)(b) and (ii)(c) combined; and, optionally, (iii) an effective amount of a catalyst capable of generating free radicals to initiate polymerization of the vinyl unsaturated compounds (ii)(a), (ii)(b) and (ii)(c).
Claim 3
Dependent Claim
45 words
A curable composition as defined in Claim 1 which also includes: (iv)(a) an effective amount of a reinforcing agent; (iv)(b) an effective amount of a flame retardant agent; or (iv)(c) an effective amount of an impact modifier, or a combination of any of the foregoing.
Claim 4
Dependent Claim
32 words
A composition as defined in Claim 1 wherein the compounds (ii)(a), (ii)(b) and (ii)(c) comprise from about 15 to about 40 percent by weight of (i) and (ii)(a), (ii)(b) and (ii)(c) combined.
Claim 5
Dependent Claim
149 words
A composition as defined in Claim 1 wherein said polyphenylene ether is a homopolymer or copolymer containing structural units of the formula: in which for each of these units independently each Q¹ is hydrogen, halogen, primary or secondary lower alkyl having up to seven carbon atoms, phenyl, haloalkyl or aminoalkyl wherein at least two carbon atoms separate the halogen or nitrogen atom from the benzene ring, hydrocarbonoxy, or halohydrocarbonoxy wherein at least two carbon atoms separate the halogen and oxygen atoms; and each Q² is independently hydrogen, halogen, primary or secondary lower alkyl, phenyl, haloalkyl, hydrocarbonoxy or halohydrocarbonoxy as defined for Q¹, said polyphenylene ether having terminal groups selected from reaction products of said polyphenylene ether with an organic acid, an organic acid halide, an organic acid anhydride, a ketene, or a compound having more than one of the functional groups or a mixture of any of the foregoing.
Claim 6
Dependent Claim
105 words
A composition as defined in Claim 1 wherein said polyphenylene ether is capped with a compound having the general formula (I)―Z―(II) which is a compound that contains in its molecule both group (I) which is at least one group having the formula where X is F, Cl, Br, I, OH, OR, or O - - R, where R is H or an alkyl or aryl radical and group (II) which is at least one carboxylic acid, acid anhydride, acid amide, imido, carboxylic acid ester, amino or hydroxyl group; wherein groups (I) and (II) are covalently bonded through linkage Z which is a divalent hydrocarbon radical.
Claim 7
Dependent Claim
39 words
A composition as defined in Claim 3 wherein said polyphenylene ether is a poly(2,6-dimethyl-1,4-phenylene ether) or a poly(2,6-dimethyl-co-2,3,6-trimethyl-1,4-phenylene ether) end capped with an acid halide, and acid anhydride or compound having both acid halide and acid anhydride functional groups.
Claim 8
Dependent Claim
26 words
A composition as defined in Claim 4 wherein said polyphenylene ether is end capped with benzoyl chloride, acetic anhydride, maleic anhydride or trimellitic anhydride acid chloride.
Claim 9
Dependent Claim
24 words
A composition as defined in Claim 1 wherein component (ii)(a) comprises a polyunsaturated polyester, a polyvinyl aromatic hydrocarbon or a poly(acrylyl or methacrylyl) compound.
Claim 10
Dependent Claim
19 words
A composition as defined in Claim 8 wherein component (ii)(a) comprises a poly(bisphenol-A fumarate), divinyl benzene, or dimethylene methacrylate.
Claim 11
Dependent Claim
26 words
A composition as defined in Claim 1 wherein component (ii)(b) comprises a vinyl aromatic hydrocarbon and component (ii)(c) comprises a dialkyl fumarate or an N-substituted maleimide.
Claim 12
Dependent Claim
21 words
A composition as defined in Claim 10 wherein component (ii)(b) comprises styrene and component (ii)(c) comprises diethyl fumarate or N-phenyl maleimide.
Claim 13
Dependent Claim
19 words
A composition as defined in Claim 1 wherein component (iii) comprises an organic peroxide or an organic azo compound.
Claim 14
Dependent Claim
14 words
A composition as defined in Claim 8 wherein said organic peroxide comprises t-butyl peroxybenzoate.
Claim 15
Dependent Claim
23 words
A composition as defined in Claim 1 wherein component (iv)(a) comprises a reinforcing amount of glass fibers, polyester fibers or a mixture thereof.
Claim 16
Dependent Claim
18 words
A composition as defined in Claim 1 wherein component (ii)(b) comprises a flame retardant amount of aluminum trihydrate.
Claim 17
Dependent Claim
33 words
A composition as defined in Claim 1 wherein component (iv)(c) comprises an impact improving amount of a styrene-ethylene-butylene-styrene block copolymer or a polymer having a polymerized butyl acrylate core and a styrene shell.
Claim 18
Dependent Claim
63 words
A shaped article of manufacture formed by melt processing a composition as defined in Claim 1 by (1) blending powder or pellets of component (i), with liquid component (ii)(a), optionally, liquid component (ii)(b) or (ii)(c), and, optionally, component (iii); (2) extruding the composition to a desired shape at a temperature below 150°C.; and (3) curing component (ii)(a) and optional components (ii)(b) and (ii)(c).
Claim 19
Dependent Claim
88 words
A shaped article of manufacture formed by melt processing a composition as defined in Claim 2 by (1) blending powder or pellets of component (i) with liquid component (ii)(a), optionally, liquid component (ii)(b) or liquid component (ii)(c); optionally component (iii) and at least one of components (iv)(a); (iv)(b) or (iv)(c); or a mixture of any of said components (iv)(a), (iv)(b) or (iv)(c); (2) extruding the composition to a desired shape at a temperature below 150°C.; and (3) curing component (ii)(a) and optional component (ii)(b) and optional component (ii)(c).
References Cited (Backward Citations)
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