Organopolysiloxanes with dye residues

US6194534A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Frank Baumann · Mehring, DE
• Gunter Mahr · Burghausen, DE
• Bernward Deubzer · Burghausen, DE

Key dates

• Filing date: Sep 20, 1999
• Grant date: Feb 27, 2001
• Expiry date: Sep 20, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B69/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to organopolysiloxanes with dye residues comprising units of the general formula EQU R.sup.1.sub.a (RO).sub.b A.sub.c R.sup.2.sub.d SiO.sub.(4-a-b-c-d)/2 (I) wherein R can be identical or different and is hydrogen atom or monovalent, substituted or unsubstituted hydrocarbon radical, R.sup.1 can be identical or different and is hydrogen atom or monovalent, SC-bonded hydrocarbon radical, R.sup.2 can be identical or different and is substituted, monovalent, Si--C bonded hydrocarbon radical, A can be identical or different and is a radical of a water-soluble organic dye containing at least one of sulfonic acid groups, sulfonate groups, or metal complexes thereof, a is 0, 1, 2, or 3, b is 0, 1, 2 or 3, d is 0, 1, 2, or 3 and c is 0, 1 or 2 with the proviso that the sum of a, b, c and d is less than or equal to 3, the organopolysiloxanes have at least one radical, and, in the units of the formula (I) where c is other than 0, d is 0.