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US 11,414,544 B2Granted
Ethylenically unsaturated macromers produced from a residue of isocyanate manufacturing, related preformed stabilizers, polymer polyols, foam-forming compositions and foams
AssigneeCovestro LLC
InventorsRick L. Adkins, Don S. Wardius
Life of this patent
Estimating the term…
Abstract
Disclosed are ethylenically unsaturated macromers produced using a residue of an isocyanate manufacturing process. Also disclosed are preformed stabilizers produced using such macromers, polymer polyols produced using such preformed stabilizers, foam-forming compositions produced using such polymer polyols, and foam produced using such compositions.
Claims17
A polymer polyol comprising a reaction product of a reaction mixture comprising:
- (1) a base polyether polyol having a hydroxyl functionality of 2 to 8 and an OH number of 20 to 400;
- (2) a mixture of ethylenically unsaturated monomers comprising styrene and acrylonitrile in amounts such that the weight ratio of styrene to acrylonitrile is from 80:20 to 20:80;
- (3) a preformed stabilizer;
- and
- (4) a free radical initiator,
- wherein the preformed stabilizer comprises a reaction product of a reaction mixture comprising:
- (a) an ethylenically unsaturated macromer;
- (b) an ethylenically unsaturated monomer;
- and
- (c) a free radical initiator, and
- wherein the ethylenically unsaturated macromer comprises a reaction product of a reaction mixture comprising:
- (a) an isocyanate residue that is an organic particulate having a content of bound isocyanate that is 0.1 to 10% by weight, based on the total weight of the organic particulate;
- (b) a polyol having a hydroxyl number of 20 to 75 and a hydroxyl functionality of 2 to 8;
- and
- (c) a hydroxyl-reactive compound containing reactive ethylenic unsaturation.
12 more elements
A polymer polyol comprising a reaction product of a reaction mixture comprising:
- (1) a base polyether polyol having a hydroxyl functionality of 2 to 8 and an OH number of 20 to 400;
- (2) a mixture of ethylenically unsaturated monomers comprising styrene and acrylonitrile in amounts such that the weight ratio of styrene to acrylonitrile is from 80:20 to 20:80;
- (3) a preformed stabilizer;
- and
- (4) a free radical initiator,
- wherein the preformed stabilizer comprises a reaction product of a reaction mixture comprising:
- (a) an ethylenically unsaturated macromer;
- (b) an ethylenically unsaturated monomer;
- and
- (c) a free radical initiator, and
- wherein the ethylenically unsaturated macromer comprises a reaction product of a reaction mixture comprising:
- (a) an organic particulate comprising:
- (i) a crosslinked polymer comprising aromatic groups, biuret groups, urea groups, and carbodiimide groups;
- and
- (ii) a high-boiling hydrocarbon;
- (b) a polyol having a hydroxyl number of 20 to 75 and a hydroxyl functionality of 2 to 8;
- and
- (c) a hydroxyl-reactive compound containing reactive ethylenic unsaturation.
15 more elements
A polymer polyol comprising a reaction product of a reaction mixture comprising:
- (1) a base polyether polyol having a hydroxyl functionality of 2 to 8 and an OH number of 20 to 400;
- (2) a mixture of ethylenically unsaturated monomers comprising styrene and acrylonitrile in amounts such that the weight ratio of styrene to acrylonitrile is from 80:20 to 20:80;
- (3) a preformed stabilizer;
- and
- (4) a free radical initiator,
- wherein the preformed stabilizer comprises a reaction product of a reaction mixture comprising:
- (a) an ethylenically unsaturated macromer;
- (b) an ethylenically unsaturated monomer;
- and
- (c) a free radical initiator, and
- wherein the ethylenically unsaturated macromer comprises a reaction product of a reaction mixture comprising:
- (a) an isocyanate residue that is an organic particulate having a mean particle size of 0.1 to 100 micron;
- (b) a polyol having a hydroxyl number of 20 to 75 and a hydroxyl functionality of 2 to 8;
- and
- (c) a hydroxyl-reactive compound containing reactive ethylenic unsaturation.
12 more elements
Dependencies are inferred from the claim text.