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    METHOD FOR PRODUCING TRIALKOXY SILANE USING COPPER FLUORIDE SALT AS CATALYST
    1.
    发明专利
    METHOD FOR PRODUCING TRIALKOXY SILANE USING COPPER FLUORIDE SALT AS CATALYST 审中-公开

    公开(公告)号：JP2002138093A

    公开(公告)日：2002-05-14

    申请号：JP2001212226

    申请日：2001-07-12

    Applicant: BASF AG

    Inventor： BRAND ALEXANDRA

    IPC: C07B61/00 ,  C07F7/02 ,  C07F7/04

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a trialkoxy silane which makes it possible to reach a high selectribity and a high degree of conversion to a tetraalkoxy silane under the condition in which a hydrolytic halide is not pres ent. SOLUTION: This method for producing a trialkoxy silane uses a copper salt which has an anion containing more than one nonhydrolytic fluorine atoms or its mixture with another salt as a copper catalyst when metallic silicon is reacted with an alcohol in an inert solvent. The anion containing the nonhydrolytic florine is selected from trifloroacetate salts, triflorosulfonate salts, hexaforophosphate salts or tetrafloroborate salts, the another salt is selected from Cu2 O, CuO, Cu-(OH)2, CuCl, CuCl2, Cu(CH3COO)2, CuSO4 and preferably Cu2O, CuO or Cu (OH)2, and the alcohl used is ROH [R is a 1-4C alkyl].

    METHOD FOR SEPARATING TRIMETHOXYSILANE FROM TRIMETHOXYSILANE/METHANOL LIQUID MIXTURE
    3.
    发明专利
    METHOD FOR SEPARATING TRIMETHOXYSILANE FROM TRIMETHOXYSILANE/METHANOL LIQUID MIXTURE 失效

    公开(公告)号：JP2001158790A

    公开(公告)日：2001-06-12

    申请号：JP2000303068

    申请日：2000-10-03

    Applicant: BASF AG

    Inventor： BRAND ALEXANDRA ,  STERZEL HANS-JOSEF

    IPC: C07F7/04

    Abstract: PROBLEM TO BE SOLVED: To provide an extraction method capable of separating trimethoxysilane(TMS) from a liquid mixture of TMS/methanol in high yield without applying thermal load to the liquid. SOLUTION: The objective extraction method for separating TMS from a TMS/methanol liquid mixture comprises the addition of one or more kinds of methanol-soluble inorganic salts and/or organic salts and optionally other non-polar organic solvent to the liquid mixture and the separation of the product into two phases consisting of a TMS-rich extracted phase and a methanol-rich extraction residue. The amount of the salt to be added to the mixture is adjusted to get the extracted phase having a TMS:methanol weight ratio of at least 94:6. The invention also provides a method to use one or more kinds of inorganic salts or organic salts in the above extraction method.

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