RESIN MANUFACTURE

Procedure for the preparation of a varnish resin component for oven drying varnishes by copolymerization of vinyl aromatic hydrocarbons with 8 to 12 carbon atoms, with maleic anhydride in a hydrocarbon, and subsequent partial esterification with monovalent alcohols and alkenoxylation of the copolymer, characterized in that the copolymerization is carried out in the presence of a dispersing agent, consisting of a copolymer of esters of α, β-unsaturated carboxylic acids of long chain aliphatic alcohols in the range of C10 to C20 or mixtures of said alcohols with copolymerizable ethylenically unsaturated compounds, and because the low-viscosity suspension obtained is subsequently partially esterified, and thus continuously transformed into a true resin solution. (Machine-translation by Google Translate, not legally binding)