Unsaturated polyester resins, a process for their preparation and compositions containing these polyester resins

Abstract From the Canadian patent

Unsaturated polyester resins having an acid number of from 0 to 50 and a hydroxyl number of from 10 to 150 which are composed of 0,6 to 0,8 moles of groups derived from maleicand/or fumaric acid 0,2 to 0,4 moles of groups derived from norbornene dicarboxylic acid, 0,6 to 0,8 moles of groups derived from ethylene and/or propylene glycol, 0,2 to 0,4 moles of groups derived from diethylene glycol, 0,1 to 0,2 moles of groups derived from benzylalcohol and/or benzoic acid and 0 to 0,2 moles of groups derived from other alcohols , a process for their manufacture by a solventfree or azeotropic esterification of said monomers and compositions which can be cured under influence of W radiation …