Patent ID: 11866543
Assignee: COVESTRO LLC
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A polymer polyol comprising the reaction product of:
(A) a base polyol having a functionality of 2 to 5 and a hydroxyl number of 20 to 150,
(B) a preformed stabilizer comprising the free-radical polymerization product of (1) a macromer, with (2) an ethylenically unsaturated monomer, in the presence of (3) a free-radical polymerization initiator, and, optionally, (4) a polymer control agent, and, optionally, (5) a liquid diluent,, and
(C) an ethylenically unsaturated monomer,, in the presence of
(D) a free-radical polymerization initiator,, and, optionally
(E) a polymer control agent,
wherein the macromer comprises a polyether polyol having (meth)acrylate unsaturation and which comprises the polymerization product of a reaction mixture comprising: (a) a glycidyl (meth)acrylate, (b) a polyether polyol having a hydroxyl number of 10 to 300, a functionality of 2 to 8, and an ethylene oxide content of 2 to 25% by weight, based on the weight of the polyether polyol, and (c) a double metal cyanide catalyst.