Reactive dyes, a process for their preparation and their use

US7553340B2 · kind B2 · utility

Assignee

• HUNTSMAN INTERNATIONAL LLC · US

Inventors

• Athanassios Tzikas · Pratteln, CH
• Georg Roentgen · Glückstadt, DE
• Herbert Klier · Bad Krozingen, DE

Key dates

• Filing date: Nov 2, 2005
• Grant date: Jun 30, 2009
• Expiry date: Jun 25, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B62/4415
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Reactive dyes of formula (1) wherein R1 is hydrogen or unsubstituted or substituted C1-C4alkyl, R2 is hydrogen; C1-C4alkyl; C1-C4alkoxy unsubstituted or substituted by sulfato, hydroxy or by C1-C4alkoxy; halogen; carboxy or sulfo, R3 is hydrogen; C1-C4alkyl; C1-C4alkoxy unsubstituted or substituted by sulfato, hydroxy or by C1-C4alkoxy; halogen; nitro; C2-C4alkanoylamino; ureido; carboxy or sulfo, (R4)k denotes k identical or different substituents selected from the group halogen, C1-C4-alkyl, C1-C4alkoxy, carboxy and sulfo, X is halogen and V is a radical of formula (2a), 2(b) wherein R5 is unsubstituted or substituted C1-C4alkyl, (R6)I denotes I identical or different substituents from the group C1-C4alkyl, C1-C4alkoxy and sulfo, and I is the number 0, 1 or 2, Y is vinyl or a —CH2—CH2—U radical and U is a group that is removable under alkaline conditions, Q is a —CH(HaI)-CH2-HaI or —C(HaI)=CH2 group, Hal is halogen and k is the number 0, 1 , 2 or 3, are suitable especially for dyeing cotton and yield dyeings having good allround fastness properties.