Preparation of a disperse dyestuff containing a phosphoric acid ester, having improved safety properties and higher dyestuff yield when dyed on synthetic materials

US4113429A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Hubert Kruse · Kelkheim, DE
• Konrad Opitz · Liederbach, DE

Key dates

• Filing date: May 26, 1976
• Grant date: Sep 12, 1978
• Expiry date: May 26, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B67/0051
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Solid or aqueous liquid preparations of dispersed dyestuffs of improved safety properties and/or of a higher dyestuff yield when applied to the pad-dyeing process of synthetic or semi-synthetic fibrous materials containing beside usual disperse dyestuffs, dispersing agents, wetting agents, grinding auxiliary agents, 0.5 to 30, preferably 1 to 10 per cent by weight of at least one phosphoric acid ester of the formula ##STR1## in which n represents the integer 2 or 3, m represents an integer from 0 to 10, and R represents alkyl of 8 to 20 carbon atoms, or of mixtures of phosphoric acid esters of the said formulae (1) and (2).