Polymer polyol composition containing a grafted polyol-polyacryl

Details Polymer polyol composition containing a grafted polyol-polyacryl Polymer polyol composition containing a grafted polyol-polyacryl

1992-10-16

1994-06-14

Seidleck, James J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525123, 525124, 525127, 525131, 525403, 525404, 525408, 525409, 525418, 525451, 525452, 525453, 525454, 525460, 525528, 525530, 525532, C08L 7102, C08L 7508

Patent

active

053210778

ABSTRACT:
A polymer polyol composition comprising a continuous phase, a disperse phase within the continuous phase, and a dispersant to enhance the stability of the polymer polyol is disclosed. The dispersant is a grafted polyol-polyacrylate dispersant comprised of a isocyanate vinyl monomer/ethylenically unsaturated monomer random copolymer and a polyoxyalkylene polyether, wherein the random copolymer and the polyoxyalkylene polyether are connected through at least one urethane graft site.
Methods of preparing the polymer polyol composition and the grafted polyol-polyacrylate dispersant are provided. The polymer polyol compositions have low viscosities as well as high stability and may be prepared with high levels of dispersed vinyl polymer and high styrene:acrylonitrile ratios in the dispersed vinyl polymer. The polymer polyol compositions are useful for the preparation of polyurethanes, particularly polyurethane foams.

REFERENCES:
patent: 4390645 (1983-06-01), Hoffman et al.
patent: 4460715 (1984-07-01), Hoffman et al.
patent: 4745153 (1988-05-01), Hoffman
patent: 5194493 (1993-03-01), Hayes et al.

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