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    • 10. 发明申请
    • PROCESS FOR PRODUCING SILICA-COMPRISING POLYOL DISPERSIONS AND THEIR USE FOR PRODUCING POLYURETHANE MATERIALS
    • 生产二氧化硅聚合物分散体的方法及其生产聚氨酯材料的用途
    • US20110266497A1
    • 2011-11-03
    • US13123672
    • 2009-10-08
    • Berend ElingZeljko TomovicStefan AuffarthAlexander Traut
    • Berend ElingZeljko TomovicStefan AuffarthAlexander Traut
    • C08K5/05C09K3/00B82Y30/00
    • C08G18/3895B82Y30/00C01B33/145C01B33/151C01P2004/62C01P2004/64C01P2006/22C01P2006/82C09C1/30C09C1/3081
    • Process for producing silicate-comprising polyols, which comprises the steps (i) admixing of an aqueous silica sol (K) having an average particle diameter of from 1 to 150 nm and a silica content, calculated as SiO2, of from 1 to 60% by weight and having a pH of from 1 to 6, based on the SiO2 content used, with a 0.1- to 20-fold amount (based on the amount of water) of at least one organic solvent (L) selected from the group consisting of methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, 2-methyl-2-propanol, 1-chloro-2-propanol, cyclopentanol, cyclohexanol, 1,4-dioxane, tetrahydrofuran, 1-methoxy-2-propanol, 1-ethoxy-2-propanol, 2-ethoxyethanol, 2-methyl-2-propanol, 2-methoxyethanol, dimethylformamide, acetonitrile, dimethyl sulfoxide and acetone, methyl ethyl ketone and ethylacetate, and (ii) admixing of the resulting mixture with a polyol, (iii) at least partial removal of the water and organic solvent (L) by distillation, (iv) admixing with at least one compound (S) which has at least one at least monoalkoxylated silyl group and at least an alkyl, cycloalkyl or aryl substituent, which may contain heteroatoms, wherein this substituent optionally contains a group which is reactive toward an alcohol, an amine or an isocyanate, in an amount of from 0.1 to 20 μmol of (S) per m2 of surface area of (K), with the steps (i), (ii) and (iv) being able to be carried out simultaneously or in succession in any order, (v) optionally adjustment of the pH of the silica-comprising polyol to a value of from 7 to 12 by addition of a strongly basic compound, with step (v) also being able to be carried out between steps (iii) and (iv).
    • 制备含硅酸盐的多元醇的方法,其包括以下步骤:(i)将平均粒径为1至150nm的二氧化硅水溶液(SiO 2)计算为二氧化硅含量为1至60% ,并且基于所使用的SiO 2含量,具有1至6的pH,至少一种选自以下的有机溶剂(L)为0.1-20倍(基于水的量): 的甲醇,乙醇,1-丙醇,2-丙醇,1-丁醇,2-丁醇,2-甲基-2-丙醇,1-氯-2-丙醇,环戊醇,环己醇,1,4-二恶烷,四氢呋喃,1 2-甲氧基-2-丙醇,1-乙氧基-2-丙醇,2-乙氧基乙醇,2-甲基-2-丙醇,2-甲氧基乙醇,二甲基甲酰胺,乙腈,二甲基亚砜和丙酮,甲基乙基酮和乙酸乙酯,和(ii) 将所得混合物与多元醇混合,(iii)通过蒸馏至少部分除去水和有机溶剂(L),(iv)与至少一种化合物(S)w 其至少具有一个至少单烷氧基化甲硅烷基和至少一个可含有杂原子的烷基,环烷基或芳基取代基,其中该取代基任选地含有对醇,胺或异氰酸酯反应的基团,其量为 (K)0.1至20μmol(S)/ m 2的表面积,步骤(i),(ii)和(iv)能够以任何顺序同时或连续地进行,(v) 通过添加强碱性化合物任选地将含二氧化硅的多元醇的pH调节至7至12的值,步骤(v)也可以在步骤(iii)和(iv)之间进行。