ApplicationNo. 540393 filed on 01/13/1975
US Classes:528/297, 1,2-epoxy containing reactant525/440, Mixed with -N=C=X reactant or polymer derived therefrom (X is chalcogen); or wherein solid polymer is derived from a -N=C=X reactant and also a polycarboxylic acid or derivative and a polyhydroxy reactant525/445, Mixed with ethylenically unsaturated reactant or polymer therefrom525/531, Wherein unsaturated reactant contains only one free carboxyl group525/922, POLYEPOXIDE POLYMER HAVING BEEN REACTED TO YIELD TERMINAL ETHYLENIC UNSATURATION528/302, Two or more carboxylic acid or derivatives or mixtures thereof528/303Ethylenically unsaturated carboxylic acid or ethylenically unsaturated derivative
ExaminersPrimary: Cockeram, H. S.
Attorney, Agent or Firm
Foreign Application Priority Data1972-10-31 JA
AbstractA process for preparing an unsaturated polyurethane resin containing two or more unsaturated monobasic acid residues in its molecular structure which comprises reacting, in the presence of a polymerizable vinyl monomer, (A) a diesterified product of an epoxy compound containing a hydroxyl group, said product obtained by reacting an epoxy compound having two epoxy groups in its molecular structure but not containing a hydroxyl group with unsaturated monobasic acid, with (B) a diisocyanate compound in the presence or absence of (C) oligopolyester glycol containing a saturated or unsaturated dibasic acid group, at the rate of 0.2 to 1.0 mole of the isocyanate group per each mole of said hydroxyl group.