Fluorine containing silicone textile-finishing agent: silicone suspension and perfluoroalkyl polymer

US4781844A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Wilfried Kortmann · Hagen, DE
• Helmut Steinberger · Leverkusen, DE
• Josef Pfeiffer · Leverkusen, DE
• Ulrich Koemm · Cologne, DE

Key dates

• Filing date: May 21, 1987
• Grant date: Nov 1, 1988
• Expiry date: May 21, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31551
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A textile finishing agent comprising, by weight, about PA0 (A) 50-80 parts of an aqueous colloidal suspension, in the form of a sol, at least one of an organosilsesequioxane having units of the formula RSiO.sub.3/2 (wherein R is optionally substituted alkyl or aryl of up to 7 carbon atoms) and a cocondensate of a hydrolyzate of a tetraalkoxysilane with an organotrialkoxysilane having RSiO.sub.3/2 or SiO.sub.2 units, and PA0 (B) 20-50 parts of an aqueous dispersion which contains about 5 to 50% by weight of an organic polymer resin which contains perfluoroalkyl groups which have 3 to 20 C atoms and which, in addition to fluorine atoms, can contain at most 1 hydrogen atom or chlorine atom per 2 C atoms and in which the perfluoroalkyl chain can be interrupted by oxygen and which has a fluorine content of about 0.2 to 40% by weight. Textiles finished therewith are hydrophilic, oleophilic and soil resistant.