Concentrated flowable storage stable aqueous formulations of cold dyeing fiber reactive dyestuffs

US4435181A · kind A · utility

Assignees

• Mobay Chemical Corporation · US
• BAYER HEALTHCARE LLC · DE

Inventors

• Robert G. Hoguet · Summerville, US
• Dietmar Kalz · Neunkirchen, DE
• Thomas J. Thomas · Summerville, US
• Henry T. Whetsell · Summerville, US
• Joachim Wolff · Odenthal, DE
• Konrad Nonn
• Karl-Heinz Wolf · Munich, DE

Key dates

• Filing date: Apr 21, 1982
• Grant date: Mar 6, 1984
• Expiry date: Apr 21, 2002

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/918
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present disclosure is concerned with storage stable concentrated fluid aqueous dispersions of water soluble cold dyeing fiber reactive dyes. These dispersions contain anionic or polyvinyl dispersants to provide resistance against settling or agglomeration and water soluble electrolytes to provide resistance against hydrolysis of the fiber reactive groups. The dispersions have an average particle size of less than 100 microns and in a preferred embodiment sufficient buffering agent to stabilize the pH at between about 5 and 8.