The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 1991
Filed:
Jan. 30, 1990
Franz Mosch, Diedorf, DE;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
A process is described for the preparation of modified polysiloxanes by reaction of polyvinylsiloxanes with compounds of the formula ##STR1## in which R is H, CH.sub.3 or C.sub.2 H.sub.5, in which at least one radical R is H, and R.sub.f is a perfluoroalkyl radical having 8 to 16 C atoms, in about equivalent amounts, relative to the vinyl groups, at elevated temperature. In addition, the polysiloxanes prepared in this manner are protected. Equally, the use of these polysiloxanes for the oil- and water-repellent treatment of fiber materials is claimed. This treatment makes it possible to achieve very good wash- and cleaning-resistant oil- and water-repellency, using small amounts of fluorine.