Processability and Characteristics of Novel polyurethanes from Cardanol

摘要

ABSTRACT The development of a new class of polyurethanes from cardanol, a renewable organic resource obtained as a byproduct of the cashew industry, is reported. Cardanol based novolac type phenolic resin has been synthesized by condensing cardanol with formaldehyde in the mole ratio 1:1 using sebacic acid as catalyst. The resulting novolac resin has been subjected to epoxidation followed by hydrolysis to give the hydroxyalkylated derivative (synthesized polyol).The novolac resin/synthesized po.