Method for imparting hydrophobic properties to fibers
AssigneeWacker Chemie AG
InventorsWolfgang Wagner, Matthias Scherer, Karl-Heinrich Wegehaupt, Volker Frey
Life of this patent
Estimating the term…
Abstract
Hydrophobic fibers are prepared by treating fibers with a composition containing an organopolysiloxane having Si-bonded hydrogen atoms as essentially its only reactive group, and a platinum catalyst which is inhibited by a compound which is volatile under the conditions at which the organopolysiloxane containing Si-bonded hydrogen atoms is deposited on the fiber.
Claims3
A method of treating fibers with an organopolysiloxane to impart hydrophobic properties thereto which comprises applying to the fibers at a temperature of from 100.degree. to 170.degree. C. a composition consisting essentially of an organopolysiloxane having units of the formula
- R.sub.n H.sub.m SiO.sub.4-m-n/2
- Where R is selected from the group consisting of alkyl and aryl radicals having from 1 to 6 carbon atoms, n is 0, 1, 2 or 3, with an average of from 0.9 to 1.8, m is 0 or 1, with an average of from 0.1 to 1.0, in which the only reactive group on the organopolysiloxane is Si-bonded hydrogen atoms and at least 50 gram atoms of Si-bonded hydrogen are present per gram molecule of groups which are capable of reacting with the Si-bonded hydrogen, a platinum catalyst and a compound which inhibits the platinum catalyst and is volatile under the conditions at which the organopolysiloxane containing the Si-bonded hydrogen atoms is deposited on the fiber.
Dependencies are inferred from the claim text.