Polymer dispersions in polyester polyols
AssigneeBayer MaterialScience AG
InventorsHartmut Nefzger, Erika Bauer, Erhard Michels
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Abstract
The present invention relates to polymer dispersions in polyester polyols, to a process for their preparation and to their use in the preparation of polyurethanes, and particularly microcellular polyurethanes. The polymer dispersions of the present invention comprise a polyester polyol containing structural units derived from succinic acid.
Claims13
A polymer dispersion comprising at least one polyester polyol that contains one or more structural units derived from succinic acid.
A process for the preparation of polymer dispersions comprising free-radically polymerising
- (1) one or more olefinically unsaturated monomers, with
- (2) one or more polyester polyols that are free of olefinically unsaturated groups and that contain one or more structural units derived from succinic acid, and, optionally,
- (3) one or more polyester polyols that are free of olefinically unsaturated groups and do not contain structural units derived from succinic acid.
A process for the preparation of polymer dispersions comprising free-radically polymerising
- (1) one or more olefinically unsaturated monomers, with
- (4) one or more OH-terminated prepolymers comprising the reaction product of
- (a) one or more polyester polyols containing structural units derived from succinic acid, with
- (b) one or more aromatic polyisocyanates of the diphenylmethane group wherein the total monomer content is less than 50% by wt., and, optionally,
- (2) one or more polyester polyols that are free of olefinically unsaturated groups and do not contain structural units derived from succinic acid.
A polymer dispersion comprising the free-radical polymerization product of:
- (1) one or more olefinically unsaturated monomers, with
- (2) one or more polyester polyols that are free of olefinically unsaturated groups and contain one or more structural units derived from succinic acid, and, optionally,
- (3) one or more polyester polyols that are free of olefinically unsaturated groups and do not contain structural units derived from succinic acid.
A polymer dispersion comprising the free-radical polymerization product of:
- (1) one or more olefinically unsaturated monomers, with
- (4) an OH-terminated prepolymer that comprises the reaction product of:
- (a) one or more polyester polyols that are free of olefinically unsaturated groups and that contain one or more structural units derived from succinic acid, with
- (b) one or more aromatic polyisocyanates of the diphenylmethane group wherein the total monomer content is less than 50% by wt., and, optionally,
- (3) one or more polyester polyols that are free of olefinically unsaturated groups and do not contain structural units derived from succinic acid.
Dependencies are inferred from the claim text.