Method for the preparation of organically modified

专利名称：Method for the preparation of organically

modified aerogels

发明人：Fritz Schwertfeger申请号：US09/202627申请日：19990830公开号：US06156386A公开日：20001205

摘要：The invention relates to a process for producing aerogels with permanentlyhydrophobic surface groups, in which a) silicate lyogel is provided, b) the gel provided instep a) is washed with an organic solvent, c) the gel obtained in step b) is surface silylatedand d) the surface-silylated gel obtained in step c) is dried, where the organic solventused in step b) is a diether of formula (I) R.sup.1 --O--(CH.sub. 2).sub.n --O--R.sup.2 inwhich R.sup.1 and R.sup.2 are mutually independently the same or different alkyl groupswith 1 to 4 C atoms and n is a natural number in the range from 1 to 5.

申请人：CABOT CORPORATION

代理机构：Marshall, O'Toole, Gerstein, Murray & Borun

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