Wacker-Chemie Gmbh

Gunter Von Au

Karl-Heinrich Wegehaupt

Karl Braunsperger

Richard Weidner

Michael Roth

Karl Huhn

Dieter Gerhardinger

Ernst Innertsberger

Rudolf Kaufmann

Jakob Schmidlkofer

Fridolin Stary

Edgar Schmidt

Christian Solbrig

Wolfgang Kaiser

Christa Blumlhuber

Organopolysiloxane-alkyltrialkoxysilane emulsions for impregnating

A process for stabilizing organosiloxanes containing SiOC-bonded radicals, by treating the organosiloxanes with compounds which scavenge hydroxyl groups, selected from (a) organic isocyanates, (b) compounds of the general formula

Stabilization of organosiloxanes containing SiOC-bonded radicals

A process for preparing diorganopolysiloxanes having terminal Si-bonded hydroxyl groups which comprises reacting an organosilicon compound selected from a cyclic diorganopolysiloxane, a diorganodichlorosilane hydrolysis product and mixtures thereof with from 0.1 to 3 percent by weight of a diorganodichlorosilane, based on the weight of the organosilicon compound, i.e., the cyclic diorganopolysiloxane and/or diorganodichlorosilane hydrolysis product employed, in the presence of from 1 to 50 ppm by weight of phosphonitrile chloride, based on the total weight of the organosilicon compound and diorganodichlorosilane employed, to form diorganopolysiloxanes containing an Si-bonded chlorine atom in each of the terminal units, then treating the reaction mixture with water or an aqueous solution, separating off the aqueous phase from the diorganopolysiloxanes containing an Si-bonded hydroxyl group in each of the terminal units and thereafter removing the low boiling constituents by distillation.

Process for preparing diorganopolysiloxanes having terminal Si-bonded

A method for preparing diorganopolysiloxanes containing fluoroalkyl and/or fluoroalkyloxyalkyl groups which comprises hydrolyzing dichlorosilanes containing fluororalkyl and/or fluoroalkyloxyalkyl groups and thereafter equilibrating the hydrolyzed product in the presence of a compound having the formula

Method for preparing diorganopolysiloxanes containing fluoroalkyl groups

A method for impregnating textile materials made from organic fibers which comprises impregnating the textile materials with a composition containing a crosslinkable diorganopolysiloxane, an organopolysiloxane containing at least 3 Si-bonded hydrogen atoms per molecule, a crosslinking catalyst, and an organo(poly)siloxane containing 1 or 2 Si-bonded hydrogen atoms and 2 to 8 silicon atoms per molecule, in which the composition is free of a filler having a surface area greater than 50 g/m.sup.2 in an amount greater than 1 weight percent based on the weight of the organosilicon compounds and thereafter crosslinking the crosslinkable diorganopolysiloxane to form a coating thereon.

Method of impregnating textile materials made from organic fibers

This invention relates to fluoroalkyloxyalkyl diorganopolysiloxanes having the general formula ##STR1## where R.sup.1 represents fluoroalkyloxyalkyl groups of the general formula

Fluoroalkyloxyalkyl containing organopolysiloxanes

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Burghausen, Germany

Gunter Von Au