Patent ID: 9156936
Filing Date: 2015-10-13
Classification: C08G,C08L

Abstract:
1. A propylene oxide/ethylene oxide copolymer containing two or more hydroxyl-terminated polyether chains extending from a residue of an initiator compound, wherein the polyether chains each contain an inner block and an outer block, wherein the inner block of each of said polyether chains has a molecular weight of from about 150 to 350 and contains from 10 to 35% by weight of oxypropylene units and from 65 to 90% by weight of oxyethylene units, and the outer block of each of said polyether chains contains from 95 to 100% by weight oxypropylene units and from 0 to 5% by weight oxyethylene units, and further wherein the propylene oxide/ethylene oxide copolymer has a hydroxyl equivalent weight of from 800 to 2000 and a total oxyethylene content of from 5 to 18% by weight.