HYDROXY-TERMINATED AMINE-CONTAINING POLYURETHANE OLIGOMER FOR PRODUCTION OF POLYMER CEMENT

摘要

PURPOSE:To obtain the title oligomer having excellent processability, rapid curability and decreased shrinkage, comprising a reaction product of an organic polyisocyanate with a specified polyether polyol or a saturated polyester polyol. CONSTITUTION:A reaction product from a mixture comprising an organic polyisocyanate (e.g., 2,4-tolylene diisocyanate) and a polyether polyol and/or a saturated polyester polyol having a hydroxyl-terminated tert. amine of a hydroxyl functionality of 1 or 2, an average functionality =2.3 and an average MW =1,000 at a total NCO to total OH equivalent ratio of 0.3-0.99/1 is reacted with, if necessary, a dicarboxylic acid to obtain an amine-containing hydroxy- terminated polyurethane oligomer terminated with the acid and having an acid value of 1.0-5.0mgKOH/g of the mixture.