US 8,946,313 B2Granted

Hybrid PHD/PMPO polyols for polyurethane foam applications

AssigneeBayer MaterialScience AG

InventorsRick L. Adkins, Brian L. Neal

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Abstract

This invention relates to hybrid polymer polyols. These hybrid polymer polyols comprise the free-radical polymerization product of (A) a base polyol comprising (1) a polymer modified polyol selected from (a) dispersions of polyureas and/or polyhydrazodicarbonamides in a hydroxyl group containing compound and (b) polyisocyanate polyaddition polyols, and (2) optionally, a polyol having a functionality of 2 to 6 and an OH number of from 20 to 500; (B) optionally, a preformed stabilizer; and (C) one or more ethylenically unsaturated monomers, in the presence of (D) a free-radical polymerization initiator, and (E) optionally, a polymer control agent. The present invention also relates to a process for the preparation of these hybrid polymer polyols, foams prepared from these hybrid polymer polyols and to a process for the preparation of these foams.

Claims24

Dependent claims

A stable, low-viscosity hybrid polymer polyol comprising the free-radical polymerization product of:

(A) a base polyol component comprising:
(1) from 1 to 100% by weight of a polymer modified polyol selected from the group consisting of:
(a) one or more dispersions of a polyurea and/or polyhydrazodicarbonamide in a hydroxyl group containing compound,
and
(b) one or more polyisocyanate polyaddition polyols;
and
(2) from 0 to 99% by weight of a polyol having a functionality of from 2 to 6, and an OH number of from 20 to 500;
with the proviso that said base polyol is not prepared from a natural oil, and wherein the sum of the %'s by weight of (A)(1) and (A)(2) totals 100% by weight of component (A);
(B) optionally, a preformed stabilizer;
and
(C) one or more ethylenically unsaturated monomers;
in the presence of:
(D) a free-radical polymerization initiator;
and
(E) optionally, a polymer control agent;
wherein the solids content of the hybrid polymer polyol ranges from 20 to 70% by weight, and comprises (i) from 1% to 60% by weight of polyureas and/or polyhydrazodicarbonamides or polyisocyanate polyaddition products, and (ii) from 40% to 99% by weight of graft copolymers comprising the ethylenically unsaturated monomers, with the sum of the %'s by weight of (i) and (ii) totaling 100% by weight of the solids in the hybrid polymer polyol.

13 more elements

A process for the preparation of a stable, low-viscosity hybrid polymer polyol comprising

(I) free-radically polymerizing:
(A) a base polyol component comprising:
(1) from 1 to 100% by weight of a polymer modified polyol selected from the group consisting of:
(a) one or more dispersions of a polyurea and/or polyhydrazodicarbonamide in a hydroxyl group containing compound
and
(b) one or more polyisocyanate polyaddition polyols;
and
(2) from 0 to 99% by weight of a polyol having a functionality of from 2 to 6, and an OH number of from 20 to 500;
with the proviso that said base polyol is not prepared from a natural oil, and wherein the sum of the %'s by weight of (A)(1) and (A)(2) totals 100% by weight of component (A);
(B) optionally, a preformed stabilizer;
and
(C) one or more ethylenically unsaturated monomers;
in the presence of:
(D) a free-radical polymerization initiator;
and
(E) optionally, a polymer control agent;
wherein the resultant hybrid polymer polyol has a solids content of from 20 to 70% by weight, which comprises (i) from 1% to 60% by weight of polyureas and/or polyhydrazodicarbonamides or polyisocyanate polyaddition products, and (ii) from 40% to 99% by weight of graft copolymers comprising the ethylenically unsaturated monomers, with the sum of the %'s by weight of (i) and (ii) totaling 100% by weight of the solids in the hybrid polymer polyol.

14 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/327,879Filed 16 Dec 2011
Published: US 2013/0158142 A120 Jun 2013
Granted: 3 Feb 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

C08G 18/4072
Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64: mixtures of compounds of group…
C08F 283/006
Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G: on to polymers provided for in C08G18/00
C08G 18/0876
The dispersing or dispersed phase being organic: the dispersing or dispersed phase being a polyol
C08G 18/3231
Acyclic: hydrazine or derivatives thereof