Organopolysiloxanes with Bunte salt groups, their synthesis and use for the surface treatment of inorganic or organic materials

US4537595A · kind A · utility

Assignee

• Th. Goldschmidt. AG · DE

Inventors

• Burghard Gruning · Essen, DE
• Ulrich Holtschmidt
• Gotz Koerner · Essen, DE

Key dates

• Filing date: Jun 28, 1984
• Grant date: Aug 27, 1985
• Expiry date: Jun 28, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31663
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Organopolysiloxanes with Bunte salt groups having the formula ##EQU1## the Bunte salt groups being linked to a silicon atom by way of a carbon atom and in which PA0 R.sup.1 is methyl with the proviso that up to 10% of the R.sup.1 groups may be alkyl with up to 18 carbon atoms or vinyl phenyl, hydrogen or hydroxyl, PA0 R.sup.2 is the ##STR1## group or the ##STR2## group, in which one of the R.sup.3, R.sup.4 groups represents an OH group and the other an --S.sub.2 O.sub.3 Me group (Me=alkali or the optionally substituted ammonium group), whereby the R.sup.3 and R.sup.4 radicals can be hydroxyl or together the oxygen of an oxirane ring in an amount up to 50% of the R.sup.2 group, PA0 a has any value from 1 to 2.33 and PA0 b has any value from 0.02 to 1. The compounds can be synthesized from the corresponding organopolysiloxanes having epoxy groups by reaction with alkali or ammonium thiosulfate and used for the surface treatment of inorganic or organic materials, for example, textiles, paper or rock wool.