EP0103392A1
Expired / Lapsed
EP
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Fortified epoxy resin compositions and process for the preparation thereof
Assignee: National Research Council Of Canada Te Ottawa Can
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Filing: 1983-08-05
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Granted: —
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Expires: 2003-08-05
Abstract
Abstract Heat curable epoxy resin compositions comprising a resin-forming polyepoxide and an amine curing agent are fortified (i. e. given increased strength and modulus but without consequent brittleness) by incorporating into the resin mix prior to curing up to 40 parts by weight per hundred parts of resin of a fortifying agent which is the reaction product of an aromatic amine, e. g. aniline, with a mono- or di-epoxide, the fortifier thus obtained optionally further being reacted with an isocyanate or nitrile prior to incorporation into the resin mix.
Inventors
- 👤 Paul Douglas Mclean
- 👤 Andrew Garton
- 👤 Robert Frederick Scott
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 17:43
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/44; C08G59/62; C08G59/64; C08G59/02; C08G59/10; C08G59/182; C08G59/184; C08G59/20; C08G59/22; C08G59/226; C08G59/32; C08G59/38
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
60 words
A iortitied curable epoxy resin composition comprising a resin forming polyepoxide and an amine curing agent therefor, characterized in that the composition further contains, as a fortifier, the reaction product of i) an aromatic amine having an amino group attached to an aromatic ring and ii) a mono-diepoxide, said reaction product optionally being further reacted with an isocyanate or nitrile.
Claim 2
Dependent Claim
60 words
A iortitied curable epoxy resin composition comprising a resin forming polyepoxide and an amine curing agent therefor, characterized in that the composition further contains, as a fortifier, the reaction product of i) an aromatic amine having an amino group attached to an aromatic ring and ii) a mono-diepoxide, said reaction product optionally being further reacted with an isocyanate or nitrile.
Claim 3
Dependent Claim
71 words
A composition according to claim 1, characterized in that the fortifier is the reaction of a mono- or diepoxide with an amine of the formula in which A to E are each hydrogen, C 1 -C4 alkyl, halogen, halogenated C 1 -C 4 alkyl, phenyl, halogenated phenyl, hydroxyl, amino, an alkylene-linked aromatic amine or amide moiety, or an group where X is H, C 1 - C 4 alkyl or phenyl.
Claim 4
Dependent Claim
56 words
A composition according to claim 1 or 2,characterized in that the fortifier is the reaction product of said amine with a monoepoxide of the formula wherein A' and B' are each hydrogen, halogen, C 1 -C 4 alkyl, halo- g enated C 1 -C 4 alkyl, phenyl or halogenated phenyl, or an alkylene-linked aromatic ether moiety.
Claim 5
Dependent Claim
36 words
A composition according to claim 1 or 2, characterized in that the fortifier is the reaction product of said amine with a diepoxide containing two epoxide groups one oi which is less reactive than the other.
Claim 6
Dependent Claim
13 words
A composition according to claim 4, wherein the diepoxide reactant is vinylcyclohexene dioxide.
Claim 7
Dependent Claim
32 words
A composition according to any one of the preceding claims, characterized in that the fortifier is present in an amount of up to 40 parts by wt. per hundred parts of resin.
Claim 8
Dependent Claim
22 words
A composition according to any one of the preceding claims wherein the amine curing agent is methylene dianiline, N-aminoethylpiperazine, metaphenylenediamine or ethylmethylimidazole.
Claim 9
Dependent Claim
70 words
A composition according to any one of claims 1 to 7, wherein the fortifier is a reaction product obtained by reacting the amine with said mono- or di-epoxide and further.reacting the product thus obtained with an isocyanate selected from methyl isocyanate, ethyl isocyanate, phenyl isocyanate, or a halogenated derivative thereof or with a nitrile selected from aminobenzonitrile, phthalonitrile, malononitrile, succinonitrile, adiponitrile, or a halogenated derivative of one of those nitriles.
Claim 10
Dependent Claim
28 words
A fortified, cross-linked polyester resin composition according to any one of claims 1 to 8, which has been cured to effect cross-linking of said polyepoxide with said amine.
Claim 11
Independent Claim
83 words
A method of fortifying amine-cured polyepoxy resin compositions obtained by heat curing a reaction mixture comprising a resin-forming polyepoxide and an amine curing agent, characterized by incorporating into the reaction mixture prior to curing a fortifying agent which comprises the reaction product obtained by reacting i) an aromatic amine having an amine group attached to an aromatic ring, and ii) a mono- or di-epoxide, and optionally further reacting said reaction product with a isocyanate or nitrile, and heat curing the mixture so formed.
Claim 12
Independent Claim
83 words
A method of fortifying amine-cured polyepoxy resin compositions obtained by heat curing a reaction mixture comprising a resin-forming polyepoxide and an amine curing agent, characterized by incorporating into the reaction mixture prior to curing a fortifying agent which comprises the reaction product obtained by reacting i) an aromatic amine having an amine group attached to an aromatic ring, and ii) a mono- or di-epoxide, and optionally further reacting said reaction product with a isocyanate or nitrile, and heat curing the mixture so formed.
Claim 13
Dependent Claim
50 words
A method according to claim 10, characterized in that the fortifying agent is a reaction product obtained by reacting said aromatic amine and said mono- or di-epoxide at a molar ratio of from 1:0.8 to 1:6 and at a temperature of from 75-190°C for a period of about 1 houi.
Claim 14
Dependent Claim
34 words
A method according to claim 11, characterized in that the fortifying agent is obtained by reaction of said amine with said mono- or di-epoxide in the presence of diethylamine hydrochloride, ethylmethylimidazole, alphamethylbenzyldimethylamine or 2-hydroxybenzyldimethylamine.
Claim 15
Dependent Claim
36 words
A method according to claim 10, 11 or 12 characterized in that the fortifying agent is added to the curable resin composition in an amount of from 5-30 parts by weight, per hundred parts of resin.
Claim 16
Independent Claim
31 words
A method according to any one of claims 10 - 13, characterized in that the fortifier is as required by any one of claims 1 - 5, 7 and 8 .
References Cited (Backward Citations)
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