Evonik Degussa Gmbh

Max Preisenberger

Burkhard Standke

Peter Jenkner

Ekkehard Mueh

Ekkehard Müh

The present invention provides a linear, cyclic or branched polyether-functional siloxane or a mixture of polyether-functional siloxanes of the general formula (I) R[&#x2014;OSi(R)(OR)][&#x2014;OSi(R)(R)(OR)], (II) in which groups R are identical or different and R is essentially H, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, t-butyl, 2-methoxyethyl or 2-hydroxyethyl or, in the case of cyclic siloxanes, may be a silyl radical of the silyl units of the formula (I), groups Rare identical or different and Ris a terminally blocked polyether group of the formula (II), R&#x2014;O[&#x2014;R&#x2014;O][(&#x2014;R)]&#x2014; (II) and groups Rare identical or different and Ris a linear, branched or cyclic, optionally substituted alkyl group having 1 to 18 carbon atoms or a mercaptoalkyl group or an alkenyl group having 2 to 8 carbon atoms or an alkenyl group having 2 to 8 carbon atoms or an aryl group having 6 to 12 carbon atoms or an aminoalkyl group or the general formula (III) HN(CH)[(NH)(CH)]&#x2014;(CH)&#x2014; (III) The present invention further provides aqueous and/or alcoholic compositions which comprise a polyether siloxane according to formula (I), to methods for the production of said systems, and to the use thereof.

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Frankfurt am Main, Germany

Max Preisenberger