Patent ID: 8318823
Filing Date: 2012-11-27
Classification: C08G

Abstract:
1. A polyether polyol composition comprising: (a) a first polyether polyol having a hydroxyl functionality of 2, an OH number of 50 to 65 mg of KOH/g, a proportion of primary hydroxyl groups within a range of from 40 to 80%, based on the a total number of primary and secondary hydroxyl groups, in the first polyether polyol, and having a PO content of from 45 to 55% by weight and an EO content of from 40 to 55% by weight; (b) a dispersion of a polymer in a second polyether polyol, wherein the OH number of the dispersion is within a range of from has an OH number of 10 to 30 mg of KOH/g, and wherein the second polyether polyol has a hydroxyl functionality of 3, a proportion of primary hydroxyl groups within a range of from 70 to 90%, based on the a total number of primary and secondary hydroxyl groups in the second polyether polyol, a PO content of from 70 to 90% by weight and an EO content of from 10 to 30% by weight; (c) a third polyether polyol having a hydroxyl functionality of 3, an OH number within a range of from 220 to 290 mg of KOH/g and, a proportion of primary hydroxyl groups within a range of at least 90%, based on the a total number of primary and secondary hydroxyl groups, in the third polyether polyol, and having a PO content of up to 2% by weight and an EO content of at least 75% by weight; (d) a fourth polyether polyol having a hydroxyl functionality of 2, an OH number within a range of from 50 to 70 mg of KOH/g and, a proportion of primary hydroxyl groups within a range of from 0 to 3%, based on the a total number of primary and secondary hydroxyl groups, in the fourth polyether polyol, and having a PO content of at least 95% by weight and an EO content of up to 3% by weight.