Patent US4708932A successfully refreshed from Google Patents.
Patent EP0189048A2 successfully refreshed from Google Patents.
EP0189048A2
Expired / Lapsed
EP
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Curable epoxy resin compositions
Assignee: Wyeth Holdings LLC
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Filing: 1986-01-10
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Granted: —
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Expires: 2006-01-10
Abstract
Abstract This invention relates to improved reinforced epoxy resin compositions. In addition, it relates to curable epoxy resin compositions comprising non-siliceous reinforcing filaments and epoxy prepolymers combined with aromatic polyamine curing agents.
Inventors
- 👤 David Wei Wang
- 👤 Jeanne Lynn Courter
- 👤 Dalip Kumar Kohli
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 11:03
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/30; C07D207/34; C07D207/36; C07D207/40; C07D207/404; C07D303/00; C07D303/02; C07D303/36; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/32; C08G59/38; C08G59/40; C08G59/50; C08G59/52; C08J; C08J5/00; C08J5/04; C08J5/06; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/06; C08L; C08L63/00; C08L79/00; C08L79/04; C08L79/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
117 words
A fiber resin matrix composition comprised of: (a) non-siliceous reinforcing filaments, and (b) a heat-curable epoxy resin composition comprising: (i) an epoxy prepolymer or combination of prepolymers having more than one epoxide group per molecule, and (ii) an amount effective to promote cure of an amine-functional curing agent or combination of curing agents selected from those of the formula: wherein R is hydrogen or methyl and X is a divalent non-aromatic organic hydrocarbon, non-aromatic hetero-interrupted hydrocarbon, or non-aromatic halo- or alkyl-substituted hydrocarbon radical, wherein the structure of X is characterized by conferring on composites comprised of said fiber resin matrix composition improved interlaminar toughness and residual compression strength after impact, while maintaining compression strength under hot/wet conditions.
Claim 2
Dependent Claim
117 words
A fiber resin matrix composition comprised of: (a) non-siliceous reinforcing filaments, and (b) a heat-curable epoxy resin composition comprising: (i) an epoxy prepolymer or combination of prepolymers having more than one epoxide group per molecule, and (ii) an amount effective to promote cure of an amine-functional curing agent or combination of curing agents selected from those of the formula: wherein R is hydrogen or methyl and X is a divalent non-aromatic organic hydrocarbon, non-aromatic hetero-interrupted hydrocarbon, or non-aromatic halo- or alkyl-substituted hydrocarbon radical, wherein the structure of X is characterized by conferring on composites comprised of said fiber resin matrix composition improved interlaminar toughness and residual compression strength after impact, while maintaining compression strength under hot/wet conditions.
Claim 3
Dependent Claim
48 words
A composition as in Claim 1, wherein X is a divalent radical selected from the group consisting of polymethylene of from 2 to 10 carbon atoms; -(CH 2 CH 2 OCH 2 CH Z OCH 2 CH 2 )-; -CH 2 CH 2 OCH 2 CH 2 -;
Claim 4
Dependent Claim
39 words
A composition as in Claim 2, wherein said curing agent (b)(ii) is selected from compounds of the formula: wherein z is an integer of from 2 to 6, and R is H or CH 3 , or mixtures thereof.
Claim 5
Dependent Claim
22 words
A composition as in Claim 1, wherein said curing agent (b)(ii) is used in combination with a second aromatic polyamine curing agent.
Claim 6
Dependent Claim
29 words
A composition as in Claim 4, wherein said second aromatic polyamine is selected from diamino diphenyl sulfone, bis-3-aminophenoxy diphenyl sulfone, bis-4-aminophenoxy diphenyl sulfone, diaminobenzoate methylene dianiline or phenylene diamine.
Claim 7
Dependent Claim
34 words
A composition as in Claim 1, wherein said non-siliceous filaments (a) comprise carbon, silicon carbide, boron, rayon, polybenzimidazole, polybenzothiazole, polyester, polyamide, polyaramid, metal coated such filaments or a combination of any of the foregoing.
Claim 8
Dependent Claim
67 words
A composition as in Claim 1, wherein the epoxy prepolymer (b)(i) is selected from the group consisting of: wherein x is an integer of from 1 to 4; wherein y is 1 or 2, X is -0- or -N-, R 3 is H or CH 3 and n is 2 to 8, or a mixture of the foregoing; or a mixture of any of the foregoing compounds.
Claim 9
Dependent Claim
33 words
A composition as in Claim 7, wherein component (b) comprises materials with the following parts by weight allocation: from about 75 to 125 parts (b)(i), and from about 30 to 50 parts (b)(ii).
Claim 10
Dependent Claim
34 words
A composition as in Claim 1, which also includes (b)(iii) a small effective amount of a curing catalyst, and, optionally, a minor, effective, property--modifying amount of a bis-maleimide compound or a styrene-butadiene-acrylonitrile core-shell polymer.
Claim 11
Dependent Claim
103 words
A heat-curable epoxy resin composition comprising: (i) an epoxy prepolymer or combination of prepolymers having more than one epoxide group per molecule, and (ii) an amount effective to promote cure of an amine-functional curing agent or combination of curing agents selected from compounds of the formula: wherein R' is hydrogen or methyl, and X is a divalent non-aromatic organic hydrocarbon, non-aromatic hetero-interrupted hydrocarbon, or non-aromatic halo- or alkyl-substituted hydrocarbon radical, wherein the structure of X is characterized by conferring on composites comprised of said epoxy resin composition improved interlaminar toughness and residual compression strength after impact, while maintaining compression strength under hot/wet conditions.
Claim 12
Dependent Claim
103 words
A heat-curable epoxy resin composition comprising: (i) an epoxy prepolymer or combination of prepolymers having more than one epoxide group per molecule, and (ii) an amount effective to promote cure of an amine-functional curing agent or combination of curing agents selected from compounds of the formula: wherein R' is hydrogen or methyl, and X is a divalent non-aromatic organic hydrocarbon, non-aromatic hetero-interrupted hydrocarbon, or non-aromatic halo- or alkyl-substituted hydrocarbon radical, wherein the structure of X is characterized by conferring on composites comprised of said epoxy resin composition improved interlaminar toughness and residual compression strength after impact, while maintaining compression strength under hot/wet conditions.
References Cited (Backward Citations)
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