Partly hydrophobic metal oxides are prepared by silylating a metal oxide withI) an organosilane of the formulaR1nSiX4-n where n is 1, 2 or 3or mixtures of these organosilanes,R1 each being an identical or different monovalent, optionally halogenated hydrocarbon radical having 1 to 24 carbon atoms, and being saturated, aromatic, monounsaturated, or polyunsaturation,X being halogen, a nitrogen-containing radical, OR2, OCOR2, O(CH2)xOR2,R2 being hydrogen or a monovalent hydrocarbon radical having 1 to 12 carbon atoms,x being 1, 2 or 3;or II) an organosiloxane composed of units of the formula(R13SiO1/2), and/or(R12SiO2/2), and/or(R1SiO3/2),the number of R1 units in one organosiloxane being at least 2; I and II used individually or in any desired mixture in a total amount of from 0.015 mmol/g to 0.15 mmol/g per 100 m2/g of metal oxide BET surface area.展开▼
机译：通过将金属氧化物甲硅烷基化制备部分疏水性金属氧化物 I）下式的有机硅烷<？in-line-formulae description =“在线公式” end =“ lead”？> R 1 n SiX 4-n <？in-line-formulae description =“在线公式” end =“ tail”？>其中n是1、2或3或这些有机硅烷的混合物， R 1 每个都是相同或不同的单价的，可选地具有1的卤代烃基到24个碳原子，并且为饱和，芳族，单不饱和或多不饱和， X是卤素，一个含氮基团，OR 2 ，OCOR 2 ，O（CH 2 ） x OR 2 ， < ListItem id =“ ul0001-0004” number =“ 0000”> R 2 是氢或具有1至12个碳原子的一价烃基， x是1、2或3;要么 II）由下式组成的有机硅氧烷<？in-line-formulae description =“在线表达式” end =“ lead”？>（R 1 3 SiO 1/2 ），和/或<？in-line-formulae description =“ In-line Formulae” end =“ tail”？> <？in-line-formulae description =“ In-line Formulae” end =“ lead”？> （R 1 2 SiO2 2/2 ），和/或<？in-line-formulae description =“在线表达式”结尾=“ tail”？> <？in-line-formulae description =“ In-line Formulae” end =“ lead”？>（R 1 SiO 3/2 ） ，<？in-line-formulae description =“在线公式” end =“ tail”？>一种有机硅氧烷中的R 1 个单元的数目至少为2; I和II单独或以任何期望的混合物使用，总量为每100 m 2 / g金属氧化物BET表面积0.015mmol / g至0.15mmol / g。
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