Wacker Chemie Ag

Wacker-chemie Gmbh

Anton Heller

Holger Rautschek

Christof Brehm

Christian Herzig

Abdulmajid Hashemzadeh

Wolfgang Ziche

Siegfried Dormeier

Johann Bindl

Elisabeth Hoelzlwimmer

Marco Kauschke

Hans-Jurgen Lautenschlager

Irmgard Hofbauer

Jonas Schwarzkopf

Elisabeth Grüner

Elisabeth HÖLZLWIMMER

Emulsions of beta-ketocarbonyl-functional organosilicon compounds

Compositions containing &#x3b2;-ketocarbonyl-functional organopolysiloxanes, aminoalkyl-functional organopolysiloxanes, and optionally an organometallic compound provide textiles with high and lasting water repellency.

Compositions comprising beta-ketocarbonyl-functional organosilicon compounds

Storage stable aqueous dispersions of &#x3b2;-ketocarbonyl functional organosilicon compounds are prepared using a non-ionic emulsifier having an HLB of less than 15. The compositions are suitable for treating textiles.

Dispersions of &#x3b2;-ketocarbonyl-functional organosilicon compounds

Textile fabrics are rendered water repellent yet breathable by impregnating with an organopolysiloxanes of the formulaRSiO[SiR(OR)O][SiRO][SiRRO]SiR&#x2003;&#x2003;(I).

Method for impregnating textiles with compositions containing alkoxypolysiloxane

Polysiloxanes containing both epoxy groups and quaternary ammonium groups bonded to the polysiloxane through ring-opened epoxy groups provide a soft hand and wash fastness to fibrous substrates.

Organopolysiloxanes containing quaternary ammonium groups, the production and use thereof

Binder-containing aqueous dispersions containing organopolysiloxanes RSi(OR)Owhere x+y is &#x2266;3, x averages 1.0 to 2.0 and y averages 0 to 0.5, and a water soluble or self-dispersing silane-containing polymer provides both high adhesion as well as soil-repellant properties when applied to substrates such as textiles and carpeting.

Colloidal aqueous organopolysiloxane dispersions which contain binders and the use thereof

A process for preparing amino-functional organopolysiloxanes comprising (i) mixing aminosilanes of the general formulaRQSi(OR), where R and Rare hydrogen or optionally substituted hydrocarbyl, a is 0, 1 or 2, b is 1, 2 or 3, and a+b is &#x2266;3, Q is &#x2014;R&#x2014;[NR(CH)]N(R), where Ris a hydrocarbyl diradical and Ris hydrogen, hydrocarbyl, or acyl, e is 0, 1, 2, 3 or 4, n is 2, 3, 4, 5 or 6, with organosilicon compounds selected from siloxanes comprising units  or silanes RSi(OR), where c is 0, 1, 2 or 3, d is 0, 1 or 2, f is 1, 2 or 3, with the proviso that d+f is &#x2266;3, basic catalysts selected from alkali metal hydroxides, alcoholates and siloxanolates, and optionally, alcohols H&#x2014;[O(CHR)]OR, where Rand Rare hydrogen or hydrocarbyl, p is 2, 3 or 4, and m is 0 or an integer from 1 to 100, (ii) reacting by heating to 70&#x2013;100&#xb0; C., and (iii) subsequently, neutralizing the basic catalysts by addition of neutralizing agents which form salts which are soluble in the amino-functional organopolysiloxanes thus obtained.

Preparation of amino-functional organopolysiloxanes

Textiles treated with a textile treating composition containing a silane or organosiloxane containing both an Si&mdash;C bonded aminoalkyl group containing a primary, secondary, or tertiary amine group, and at least one Si&mdash;O&mdash;C bonded (iso) oxyalkyl radical exhibit excellent soft hand while maintaining superior water-wettability.

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Simbach, Germany

Anton Heller