Epoxide resin compositions

Mixtures comprising a major proportion of a monoamide RCONH(CHR1CHR2NH)n CHR1 CHR2NH2 and a minor proportion of a diamide RCONH (CHR 1 CHR 2 NH)n CHR 1 CHR 2 NHCOR, where R is a saturated or unsaturated aliphatic hydrocarbon radical of at least 10 carbon atoms, R1 and R2 are both hydrogen or one is...

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Bibliographische Detailangaben
Hauptverfasser:	HINTON IAN GEOFFREY, HUMPHRIES KEITH WOOD
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CORRECTING FLUIDS DYES FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS AS ADHESIVES USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	Mixtures comprising a major proportion of a monoamide RCONH(CHR1CHR2NH)n CHR1 CHR2NH2 and a minor proportion of a diamide RCONH (CHR 1 CHR 2 NH)n CHR 1 CHR 2 NHCOR, where R is a saturated or unsaturated aliphatic hydrocarbon radical of at least 10 carbon atoms, R1 and R2 are both hydrogen or one is hydrogen and the other is methyl, and n is 1-5, are obtained by condensing a polyamine H2N(CHR1CHR2NH)n CHR1CHR2NH2 with an ester RCOOR3, where R3 is C1-5 alkyl e.g. at 100 DEG -180 DEG C. Suitable polyalkylene polyamines and acids RCOOH are listed. Examples esterify tall oil fatty acid, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linseed oil fatty acid, tung oil fatty acid, coconut fatty acid, fish oil fatty acid, soybean fatty acid and dehydrated castor oil fatty acid with ethanol in the presence of methylene chloride and p-toluene sulphuric acid, and react the products with triethylene tetramine; also tall oil fatty acid ethyl ester is condensed with diethylene triamine. The amide mixtures are hardening agents for epoxide resins (see Division C3).ALSO:The invention comprises hardenable epoxide resin compositions of one or more epoxide resins having an epoxide equivalent greater than one together with a mixture comprising a major proportion of one or more monoamides RCONH (CHR1CHR2NH)n CHR1CHR2NH2 and a minor proportion of one or more diamides RCONH (CHR1CHR2NH)n CHR1CHR2 NHCOR, where R is a saturated or unsaturated aliphatic hydrocarbon radical of at least 10 carbon atoms, R1 and R2 are both hydrogen or one is hydrogen and the other is methyl, and n is 1-5 (see Division C2); a process for curing an epoxide resin by reacting it with a mixture of amides as defined above; and the hardened epoxide resins obtained by the process. Other curing agents and fillers, diluents and modifiers may be present. In examples the epoxide resin is one obtained from epichlorohydrin and 2,2-bis-(4-hydroxyphenyl)-propane; other suitable epoxide resins and epoxide resin precursors are listed.