Evonik Degussa Gmbh

Beate Seliger

Hartwig Rauleder

Frank Kropfgans

Reinhold Schork

Stefan Bade

Jörg Sauer

Norbert Schladerbeck

Joerg Sauer

Ingo Pauli

Joachim Diefenbach

André Mecklenburg

The present invention relates to a process for preparing glycidyloxy-alkylalkoxysilanes of the general formula (I) (R&#x2033;)O&#x2014;CHSi(R')(OR)(I) in which R and R&#x2032; groups are each independently linear or branched alkyl groups having from 1 to 4 carbon atoms, n is 1, 2, 3, 4, 5, 6, 7 or 8 and m is 0, 1, 2 or 3, and R&#x2033; is an HC(O)CH&#x2014; or HC(O)CHCH&#x2014; group, by reacting (i) a functionalized alkene of the general formula (II) (R&#x2033;)O&#x2014;CH(II) in which R&#x2033; is an HC(O)CH&#x2014; or HC(O)CHCH&#x2014; group and n is 1, 2, 3, 4, 5, 6, 7 or 8 with (ii) at least one hydroalkoxy-silane of the general formula (III) HSi(R&#x2032;)(OR)(III) in which R and R&#x2032; groups are each independently linear or branched alkyl groups having from 1 to 4 carbon atoms and m is 0, 1, 2 or 3, in the presence (iii) of at least one homogeneous catalyst, (iv) of at least one solvent and/or of a diluent and (v) of at least one promoter.

Process for preparing glycidyloxyalkyltrialkoxysilanes

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Hamburg, Germany

Beate Seliger