Fluoroalkyl-functional organosiloxane-containing compositions based on alcohol, a process for their preparation and their use

US6713186B1 · kind B1 · utility

Assignee

• Degussa AG · DE

Inventors

• Peter Jenkner · Rheinfelden (Baden), DE
• Albert-Johannes Frings · Rheinfelden (Baden), DE
• Michael Horn · Rheinfelden (Baden), DE
• Eckhard Just · Rheinfelden (Baden), DE
• Jaroslaw Monkiewicz · Rheinfelden (Baden), DE
• Burkhard Standke · Soest, DE

Key dates

• Filing date: Oct 11, 2000
• Grant date: Mar 30, 2004
• Expiry date: Oct 11, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31663
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

An alcoholic fluoroalkyl-functional group containing organosiloxane based composition prepared is prepared by the controlled hydrolysis of at least one fluoroalkyl-functional group containing organosilane of formula I:R1—Y—(CH2)2SiHx(R2)y(OR)3−x−y  (I),in which R1 is a mono, oligo- or perfluorinated alkyl group having 1-9 C atoms or a mono-, oligo- or perfluorinated aryl group, Y is a CH2, O or S group, R2 and R are each independently a linear, branched or cyclic alkyl group having 1-8 C atoms or an aryl group and x=0, 1 or 2 and y=0, 1 or 2, where (x+y)≦2, at a temperature in the range of 0-120° C. over a period of 0.5-24 hours and with thorough mixing in an w alcoholic medium which contains water and a weak mono- or polybasic acid or a weak base or a weak mono- or polybasic acid and a weak base or an acid or basic salt, the water employed and the alkoxysilane employed being in a molar ratio of 2-500:1.