MACROMONOMER DISPERSANT FOR USE AS A WATER-REDUCING ADDITIVEIN CONCRETE AND IN THE PREPARATION OF STABILIZERS FOR WATER-DISPERSED URETHANES

摘要

Alkoxylated acrylate and methacrylate macromonomers are disclosed that are useful in the preparation of water-reducing additives for concrete, ultraviolet light-curable adhesives, and water-dispersed polyurethanes. The macromonomers are suitably prepared by alkoxylating a hydroxyalkylacrylate o r hydroxyalkylmethacrylate in the presence of a DMC catalyst using the continuous addition of starter (CAOS) in order to prevent the formation of b y- products during the fabrication of the macromonomer.