Stable compositions of water-soluble amino-and alkenyl-functional organosiloxanes, process for their preparation and their use

US6255513A · kind A · utility

Assignee

• Huels Aktiengesellschaft · DE

Inventors

• Burkhard Standke · Soest, DE
• Jaroslaw Monkiewicz · Rheinfelden (Baden), DE
• Albert-Johannes Frings · Rheinfelden (Baden), DE
• Ralf Laven · Niederdossenbach, DE
• Roland Edelmann · Wehr, DE
• Peter Jenkner · Rheinfelden (Baden), DE
• Helmut Mack · Ludwigshafen, DE
• Dieter Barfurth · Lohmar, DE
• Michael Horn · Rheinfelden (Baden), DE

Key dates

• Filing date: Apr 28, 1999
• Grant date: Jul 3, 2001
• Expiry date: Apr 28, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2995
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a stable composition of water-soluble organosiloxanes obtained by reacting PA1 a) a water-soluble amino-functional alkoxysilane with at least one water-insoluble alkenyl-functional alkoxysilane PA1 b) by adding water to form a mixture, and PA1 c) removing the alcohol formed during step b) from the mixture, where the amino-functional alkoxysilane and the water are used in the reaction at least in amounts such that substantially all of the alkoxy groups of the water-insoluble silane can react and such that when a resulting composition is diluted with water, essentially no alcohol is liberated by hydrolysis, and the composition, during an/or after the reaction, has a pH of from 2 to 6, the pH being preferably adjusted by adding an organic or inorganic, optionally aqueous, acid. In addition, the present invention discloses a process for the preparation of such a composition and also its use.