ADDUCTS CONTAINING EPOXIDE GROUPS FROM POLYEPOXIDE COMPOUNDS AND ACID POLYESTERS OF ALIPHATIC CYCLOALIPHATIC DICARBOXYLIC ACIDS

摘要

Adducts containing epoxide groups are prepared by reacting (I) a polyester of formula HO[CO.R1.COO.R2.O] n COR1COOH, in which R1 is the hydrocarbon residue of an acid obtained by dimerizing and optionally subsequently hydrogenating a C 14-24 unsaturated fatty acid, R2 is the radical of an aliphatic diol and n= 1 to 20, with (II) a cycloaliphatic polyepoxide in which at least one 1,2-epoxide group is attached to adjacent carbon atoms of a 5- or 6-membered ring. From 0À1 to 0À5 equivalents of I are used per epoxide equivalent of II. II may be 31,4-epoxycyclohexylmethyl-3,4-epoxycyclohexane carboxylate or its 6,61-dimethyl homologue or 3 - (31,41 - epoxycyclohexyl) - 8,9- epoxy - 2,4 - dioxaspiro[5.5]undecane. I may be prepared by reacting dimerized oleic acid or dimerized castor oil fatty acid with ethylene glycol, 1,4-butane diol or 1,6-hexanediol. The adducts may be cured with polycarboxylic acid anhydrides, e.g. hexahydrophthalic anhydride. Conventional accelerators, fillers and extenders may be present.