Wacker-chemie Gmbh

Wacker Chemie Ag

Johann Bindl

Kiyoshi Ninomiya

Gilbert Geisberger

Franz X Wimmer

Michael Stepp

Markus Merget

Daniel Schildbach

Mario Heinemann

Gerhard Kreis

Anton Heller

Rudolf Kaufmann

Arnold Garhammer

Hans-Juergen Lautenschlager

Johann Doppelberger

Monika Ott

Hans P Scherm

Karl Huhn

Izura Taketa

Konrad Bachhuber

Herman Petersen

Organopolysiloxanes having aminoalkyl groups are prepared by

Process for the continuous preparation of organopolysiloxanes having aminoalkyl groups

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

The invention concerns polysiloxane compounds which contain the following components: 1. organopolysiloxane with at least two aliphatic double bonds in the molecule; 2 organopolysiloxane with at least two Si&mdash;H groups in the molecule; 3. noble metal catalyst; and 4. hydrophilic modifier of general formula (I) &lsqb;H,C&boxH;CH&mdash;A,&mdash;(A,),&mdash;X&rsqb;,B (I), in which A,, A,, X, B, m and n have the meanings given in claim 1. The polysiloxane compounds are stable during storage and are used as dental casting compounds.

Polysiloxane compound which is stable during storage and produces vulcanisates which can be permanently wetted with water

The present invention relates to a process for the preparation of organosilicon compounds containing carboxyl groups. According to the process of the invention, organosilicon compounds containing carboxyl groups are prepared in the presence of Bronstedt or Lewis acids at relatively low temperatures thus avoiding undesirable side effects of higher temperatures such as gelling due to crosslinking.

Process for the preparation of organosilicon compounds containing

A crosslinkable composition comprising (A) an organopolysiloxane which has at least one monovalent SiC-bonded radical containing primary and/or secondary amino groups, and (B) a crosslinking component selected from an alkoxysilane and/or siloxane which contains at least one carboxylic acid anhydride group. The crosslinkable composition and/or the resultant organopolysiloxane compound obtained from the reaction of organopolysiloxane (A) and crosslinking component (B) can be used to treat organic fibers and textile structures produced therefrom.

Crosslinkable composition based on aminosilicone

Emulsions which are prepared by reacting (A) an organopolysiloxane which has at least one monovalent SiC-bonded radical with primary and/or secondary amino groups, with (B) a carboxylic acid anhydride in the presence of (C) an emulsifier and (D) an aqueous phase. These emulsions are suitable as textile treating agents.

Emulsions comprising acylated amino-functional organopolysiloxane

The invention relates to a cleaner and/or conditioner for glass-ceramic surfaces which contains epoxide funcitonal organopolysiloxanes. The cleaner and/or conditioner may additionally contain other components, such as non-reactive organopolysiloxanes, surfactants, organic solvents, scouring agents, acid, additional additives and water, the composition being present as an oil-in-water or a water-in-oil emulsion.

Cleaner and/or conditioners containing organopolysiloxanes for

The invention relates to a process for preparing highly dispersed metal oxides whose surfaces are modified by an ammonium-functional organopolysiloxane as a charge controlling substance for positive chargeable toners, in which the highly dispersed metal oxides are reacted with an organopolysiloxane which contains silicon-bonded terminal hydroxyl and/or alkoxy groups, diorganosiloxane units, in which the two organic radicals are monovalent hydrocarbon radicals, and siloxane units in which the organic radicals contain a positive charged nitrogen which is bonded to silicon via carbon.

Growing community of inventors

Burghausen, Germany

Johann Bindl