Patent ID: 6177541
Filing Date: 2001-01-23
Classification: C07D,C08G,C08L

Abstract:
A process for producing an isocyanurate derivative of the formula (1): ##STR3##wherein either one of X.sup.1 and X.sup.2 is a R.sup.1 COO group and the other is a OH group, either one of Y.sup.1 and Y.sup.2 is a R.sup.2 COO group and the other is a OH group, either one of Z.sup.1 and Z.sup.2 is a R.sup.3 COO group and the other is a OH group, and each of R.sup.1 , R.sup.2 and R.sup.3 is a C.sub.1-7 organic group, having an ionic chlorine atom content of from 0.1 to 5 ppm, which comprises a first step of forming a reaction solution containing (A) tris-(2,3-epoxypropyl) isocyanurate containing from 10 to 3,000 ppm of hydrolyzable chlorine and (B) a C.sub.2-8 carboxyl group-containing compound in the presence of (C) an arylphosphine and/or a phosphonium salt comprising a non-halogen anion, in such a ratio that the carboxyl group in component (B) is from 1.02 to 1.50 mols per mol of the epoxy group in component (A), and then carrying out a reaction until the concentration of the epoxy group in the reaction solution decreases to a level of from 0.3 to 0.6 eq/kg, and a second step of maintaining the reaction solution at a temperature within a range of from 80 to 130.degree. C. for H hours, wherein 0.2.times.2.5.sup.n.ltoreq.H.ltoreq.2.times.2.5.sup.n, where n=0.1(110-T) where T is the temperature (.degree. C.), to bring the concentration of the epoxy group in the reaction solution to a level of less than 0.1 eq/kg.