Thermally or radiation curable coating compsn. - contg. reaction prod. of vinyl isocyanate and unsaturated hydroxy-carboxylic acid, for printing and varnishing

摘要

A hardenable coating compsn. contains a binder comprising a cpd (A) with olefinic unsaturation and urethane gps. and opt. an unsatd. cpd. (B) copolymerisable with (A) but differing from it., (A) is the reactn. prod. of vinyl isocyanate and a cpd. contg. OH gp(s) and the residue of an ester of a 3-6C carboxylic acid with alpha, beta-unsatn. Used in printing inks and (protective) varnishes for e.g. metals, wood, plastics, leather or paper. The compsn. can be cured by heating opt. in presence of initiators (e.g. organic peroxides) and accelerators (e.g. Co salts) or pref. by irradiation with UV or electron beams. The compsn. dries rapidly and adheres well partic. to metals.