Perfluoroalkylsulphonamidoalkoxysilanes

US5426205A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Stephan Kirchmeyer · Leverkusen, DE
• Martin Richter · Langenfeld, DE

Key dates

• Filing date: Aug 25, 1994
• Grant date: Jun 20, 1995
• Expiry date: Aug 25, 2014

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06M13/5135
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Novel perfluoroalkylsulphonamidoalkoxysilanes suitable as hydrophobing and oleophobing agents for textiles and stone materials of the formula ##STR1## wherein R.sup.f represents a monovalent perfluoroalkyl group with 4 to 20 carbon atoms, PA0 R represents a monovalent organic group which is inert towards isocyanate groups at temperatures below 100.degree. C., PA0 X,Y and Z represent identical or different organic groups which are inert towards isocyanate groups at temperatures below 100.degree. C., with the proviso that at least one of these groups is an alkoxy group, PA0 a is 1 or 2, PA0 b is 0 or 1, PA0 c is 3-a-b, but at least 1, and PA0 n is an integer from 2 to 4. and a process for their preparation.