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

1991-11-07

1993-03-16

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...

525107, 525108, 525118, 525123, 525124, 525238, 525241, C08L 2506, C08L 2512, C08L 7508, C08L 7102

Patent

active

051944936

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: 4113958 (1978-09-01), Tucker
patent: 4198333 (1980-04-01), von Bonin et al.
patent: 4222909 (1980-09-01), Brixius et al.
patent: 4250077 (1981-02-01), von Bunin et al.
patent: 4332716 (1982-06-01), Shah
patent: 5070141 (1991-12-01), Gastinger et al.
Encyclopedia of Polymer Science & Engineering 2nd edition, vol. 13, 1980, John Wiley & Sons Inc., p. 251.

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