Patent ID: 9212176
Filing Date: 2015-12-15
Classification: C07D,C08K,C08L,Y02P

Abstract:
1. A method for the manufacture of a composition comprising a polyketal adduct I wherein G is ethylene, 1,4-butylene, or 1,6-hexylene having a valence of g, wherein g=2, R R R R R a is 2, b is each independently 0 or 1, the method comprising forming an ester between a hydrocarbon polyol II and a ketocarboxy compound III in the presence of an ester-forming catalyst, wherein each ketocarboxy compound III is the same or different, L is hydroxy, and the forming an ester is conducted with at least 0.75 equivalents of the ketocarboxy compound III per one equivalent of hydroxy group in the hydrocarbon polyol II, to form a polyketocarboxylic ester IV and ketalizing polyketocarboxylic ester IV with a molar excess of polyol V relative to the Moles of polyketocarboxylic ester IV in the presence of a ketalization catalyst to provide the polyketal adduct I having less than 7 wt % of oligomers, wherein the oligomers are reaction byproducts that have a molecular weight higher than the molecular weight of the polyketal adduct I.