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    • 5. 发明申请
    • PROCESS FOR PRODUCING SILICA-COMPRISING DISPERSIONS COMPRISING POLYETHEROLS OR POLYETHER AMINES
    • 生产包含聚乙二醇或聚氨酯的含二氧化硅分散剂的方法
    • US20110313070A1
    • 2011-12-22
    • US13203634
    • 2010-03-11
    • Berend ElingZeljko TomovicStefan Auffarth
    • Berend ElingZeljko TomovicStefan Auffarth
    • C08L75/08C09K3/00C08J9/00B82Y30/00
    • C09C1/3081B82Y30/00C01P2004/62C01P2004/64C01P2006/22C01P2006/82C08K3/22C09C1/30C08L75/04
    • Process for producing silica-comprising dispersions comprising a polyetherol or a polyether amine, which comprises the steps of (i) admixing 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 a pH of from 1 to 6 with at least one polyetherol (b1) and/or polyether amine (b2) based on ethylene oxide and/or propylene oxide and having an average OH or amine functionality of from 2 to 6 and a number average molecular weight of from 62 to 6000 g/mol, (ii) distilling off at least part of the water, (iii) admixing the dispersion with at least one compound (S) having at least one at least monoalkoxylated silyl group and at least one alkyl, cycloalkyl or aryl substituent, where this substituent may have groups which are 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), where steps (i) and (iii) can be carried out simultaneously or in succession in any order, (iv) optionally adjusting the pH of the silica-comprising dispersions obtained to a value of from 7 to 12 by adding a basic compound, where step (iv) can also be carried out between steps (ii) and (iii).
    • 包括以下步骤:(i)混合平均粒径为1至150nm的二氧化硅水溶液(K)和二氧化硅含量(按SiO 2计算)的方法,该方法包括聚醚醚醚或聚醚胺, ,基于环氧乙烷和/或环氧丙烷的至少一种聚醚醚(b1)和/或聚醚胺(b2),并且具有平均OH或胺官能度,为1至60重量%,pH为1至6 2至6,数均分子量为62至6000g / mol,(ii)蒸馏至少部分水,(iii)将分散体与至少一种具有至少一个的化合物(S)混合 至少单烷氧基化甲硅烷基和至少一个烷基,环烷基或芳基取代基,其中该取代基可以具有对醇,胺或异氰酸酯反应的基团,其量为每平方米(S)的0.1至20μmol (K)的表面积,其中步骤(i)和(iii)可以执行si (iv)任选地通过加入碱性化合物将获得的含二氧化硅的分散体的pH调节至7至12的值,其中步骤(iv)也可以在步骤(ii)之间进行 )和(iii)。