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Stable suspensions of inorganic fillers in organic polyols and their application to the preparation of cellular and non-cellular polyurethanes
Stable suspensions of inorganic fillers in organic polyols and their application to the preparation of cellular and non-cellular polyurethanes
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机译:无机填料在有机多元醇中的稳定悬浮液及其在制备多孔和非多孔聚氨酯中的应用
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摘要
The instant invention is directed to a suspension which is stable in storage comprising: (1) 0.5 to 80%, by weight, based on the total suspension, of an inorganic filler in (2) 20 to 99.5%, by weight, based on the total suspension, of polyhydroxyl compounds containing aliphatic or cycloaliphatic combined hydroxyl groups, wherein said polyhydroxyl compounds (2) contain from 0.05 to 10% by weight based on (1)+(2) of a graft polymer and stabilizer which was produced by the free radical polymerization of (a) from 1 to 35%, by weight, based on the graft polymer, of an olefinically unsaturated carboxylic acid and (b) from 0 to 60%, by weight, based on the graft polymer, of other olefinically unsaturated monomers, in the presence of (c) from 5 to 99%, by weight, based on the graft polymer, of polyhydroxyl compounds, wherein the carboxyl groups of the graft polymer are completely or partially neutralized by organic or inorganic bases.
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