Liquid preparations of reactive dyestuffs

US4078884A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Konrad Opitz · Liederbach, DE
• Ludwig Schlafer
• Erwin Ungermann · Steinbach, DE

Key dates

• Filing date: Nov 18, 1975
• Grant date: Mar 14, 1978
• Expiry date: Nov 18, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B62/51
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Liquid aqueous dyeing preparations of fiber-reactive dyestuffs consisting of PA1 A. a total of from 5 to 35 percent by weight of the two dyestuffs corresponding in the form of the free acids to the formulae (I) and (II) ##STR1## b. from 1 to 5 percent by weight of buffer substances not capable of being reacted chemically with the fiber-reactive grouping of the said dyestuffs, and PA1 C. from 94 to 60 percent by weight of water, and having a pH-value between 3 and 7, Said dyeing preparations being suitable for the dyeing or printing of wool, silk, fibrous materials consisting of polyamides, native or regenerated cellulose or blends of fibers containing one or more of the said fibrous materials.