Polyesters containing acryloyl groups and a process for their production

Abstract From the Canadian patent

The present invention relates to polyesters which contain one or more acryloyl groups, have a viscosity at 23°C of 2,000 to 20,000 mPa~s and an acid value of 0 to 25 and are based on, the esterification product of I) a dicarboxylic acid component containing A) 20 to 70 mole percent of terephthalic acid B) 30 to 80 mole percent of adipic acid and C) 0 to 30 mole percent of at least one aromatic aliphatic or cycloaliphatic dicarboxylic acid other, than terephthalic or adipic acid having a molecular, weight of 100 to 202 or an anhydride of such dicarboxylic acid, II) at least 1.5 moles based on one mole of the dicarboxylic, acid component of a polyol component containing, D) 0.4 to 1.5 moles …