PURPOSE: To prepare a resinous material without causing the phase separation even on melting under heating, by copolymerizing a monomeric component consisting of an unsaturated polyfunctional carboxylic acid anhydride and another monomer in a melt of a compound having a hydroxyl group and a specific melting point.
CONSTITUTION: (A) A monomeric component consisting of (i) an unsaturated carboxylic acid anhydride, e.g. maleic anhydride, and (ii) another monomer, e.g. a vinyl ester, is copolymerized in (A) a melt of a compound, e.g. a partial fatty acid ester of a polyhydric alcohol, having hydroxyl groups and ≤150°C melting point preferably at 1:(0.001W0.5) weight ratio between the components (A) and (i) and 1:(0.1W10) weight ratio between the components (A) and (B), and if necessary an additive, e.g. a filler, tackifier or colorant, is mixed therewith to prepare the aimed resinous material.
USE: Adhesives, binders, etc.
MATSUYAMA TAKESHI
OOSHIMA TETSUYA
