| abstract |
A crosslinking material, the crosslinking material comprising the reaction product of a reaction mixture comprising:(i) a cyclic unsaturated acid anhydride and/or diacid derivative thereof;(ii) an ethylenically unsaturated monomer; and(iii) an alcohol, amine and/or thiol,wherein the cyclic unsaturated acid anhydride and/or diacid derivative thereof is partially-esterified by reaction with the alcohol, amine and/or thiol; and wherein the wherein the crosslinking material has an acid number of at least 100 mg KOH/g. |