EPOXIDHARZMASSEN MIT VERBESSERTER LAGERSTABILITAET.

摘要

Compsns. (I) comprise: (A) epoxide resin of (no.) average mol. wt. 300-6000 contg. on average 1.5-3.0 epoxide gps. per mol. and (B) polyacrylate resin obtainable by polymerising in organic solvent or solvents of (B1) 30-95 wt.% ester (II) of acrylic and/or methacrylic and/or ethacrylic acid with 1-20C alcohol in presence of (B2) 5-70 wt.% carboxyl gp. -contg. copolymer (III) of (no.) average mol. wt. 500-20,000, obtainable by mass- or soln.-polymerisation of mono-olefinically unsatd. monomers at 180-400 deg.C and 1-200 bars pressure. (B) is prepd. from 30-90 wt.% (II), 5-70 wt.% (III), and 5-70 wt.% other comonomer (III). (II) is ester with mono- to hexa-hydric aliphatic, cycloaliphatic, and/or aromatic alcohol. (III) is copolymer from major proportion of styrene and minor proportion of (meth)acrylic or maleic acid, maleic anhydride, or ester of such acids with 1-20C alcohol. (III) is styrene, alpha-methyl styrene, chlorostyrene, vinyltoluene, tert. butylstyrene, (meth)acrylic, or maleic acid, maleic anhydride, maleate ester, acrylonitrile, (meth)acrylamide, or ether of N-hydroxyalkyl(meth)acrylamide.