Polymer polyols comprising amine based polyether polyols and a process for preparing these polymer polyols
AssigneeCovestro LLC
InventorRick L. Adkins
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Abstract
This invention relates to polymer polyols which comprise one or more base polyols, at least one preformed stabilizer, one or more ethylenically unsaturated monomers, and, in the presence of at least one free radical polymerization catalyst, and optionally, one or more polymer control agents. The base polyol of these polymer polyols comprises one or more amine initiated polyols. The present invention also relates to processes for preparing these polymer polyols, to foams prepared from these polymer polyols, and to processes for producing foams from these polymer polyols.
Claims20
A polymer polyol comprising the free-radical polymerization product of:
- (a) one or more base polyols comprising (1) one or more amine initiated polyols wherein the amine initiator is free of tertiary amine groups and said amine initiated polyols have an equivalent weight of less than 500;
- (b) at least one preformed stabilizer;
- (c) one or more ethylenically unsaturated monomers;
- in the presence of
- (d) at least one free radical polymerization catalyst;
- and, optionally,
- (e) one or more polymer control agents.
A process for the preparation of a polymer polyol comprising
- (I) free-radically polymerizing:
- (a) one or more base polyols comprising (1) one or more amine initiated polyols wherein the amine initiator is free of tertiary amine group and said amine initiated polyols have an equivalent weight of less than 500;
- (b) at least one preformed stabilizer;
- (c) one or more ethylenically unsaturated monomers;
- in the presence of
- (d) at least one free radical polymerization catalyst;
- and, optionally,
- (e) one or more polymer control agents.
Dependencies are inferred from the claim text.