Polymer polyol composition containing a grafted...

Details Polymer polyol composition containing a grafted... Polymer polyol composition containing a grafted...

C - Chemistry, Metallurgy

08

G

400/2012, 400/30

C08G 81/02 (2006.01) C08G 18/63 (2006.01) C08G 18/72 (2006.01)

Patent

CA 2018186

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.

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