ANTI-FOAMING AGENT FOR THE FOOD, VARNISH AND PAPER INDUSTRIES

摘要

PCT No. PCT/EP94/00683 Sec. 371 Date Nov. 9, 1995 Sec. 102(e) Date Nov. 9, 1995 PCT Filed Mar. 7, 1994 PCT Pub. No. WO94/21348 PCT Pub. Date Sep. 29, 1994The process of controlling foam in a foam-generating system by adding to the system a foam-inhibiting effective amount of a block copolymer containing alkylene oxide units obtained by reacting a homopolymer or copolymer of alkylene oxides with a diisocyanate or a dicarboxylic acid derivative containing 2 to 44 carbon atoms.