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

US6177582A · kind A · utility

Assignee

• Huels Aktiengesellschaft · 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: Dec 3, 1997
• Grant date: Jan 23, 2001
• Expiry date: Dec 3, 2017

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21H21/16
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

An alcoholic fluoroalkyl-functional group containing organosiloxane based composition is prepared by the controlled hydrolysis of at least one fluoroalkyl-functional group containing organosilane of formula I: EQU R.sup.1 --Y--(CH.sub.2).sub.2 SiH.sub.x (R.sup.2).sub.y (OR).sub.3-x-y (I), in which R.sup.1 is a mono, oligo- or perfluorinated alkyl group having 1-9 C atoms or a mono-, oligo- or perfluorinated aryl group, Y is a CH.sub.2, O or S group, R.sup.2 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).ltoreq.2, at a temperature in the range of 0-120.degree. C. over a period of 0.5-24 hours and with thorough mixing in an 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.