发明名称 |
POLYMER POLYOL COMPOSITION CONTAINING A GRAFTED POLYOL-POLYACRYLATE DISPERSANT |
摘要 |
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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申请公布号 |
CA2018186(C) |
申请公布日期 |
2001.08.14 |
申请号 |
CA19902018186 |
申请日期 |
1990.06.04 |
申请人 |
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发明人 |
GASTINGER, ROBERT G.;HAYES, JOHN E. |
分类号 |
C08G18/63;C08G18/72;C08G81/02;(IPC1-7):C08G81/02 |
主分类号 |
C08G18/63 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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