Reactive dye compound and preparation method and application thereof

US11370921B2 · kind B2 · utility

Assignee

• Shanghai Kehua Dyestuff Industry Co., Ltd. · CN

Inventors

• Huaiqing Gao · Lo Wu, CN
• Yaoyao He · Zhejiang, CN
• Zhuan Wang · Zhejiang, CN
• Renliang Wang · Zhejiang, CN
• Yuanzhi Guo · Zhejiang, CN
• Haibin Zhang · Zhejiang, CN
• Weizhang Chen · Zhejiang, CN

Key dates

• Filing date: Jul 30, 2018
• Grant date: Jun 28, 2022
• Expiry date: Jul 30, 2038

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06P3/666
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A reactive dye compound and preparation method and application for printing and dyeing of cellulosic fibers, polyamide fibers and fabrics thereof. Formula (I) is the dye compound structure where D1 and D2 are each independently the group of the following formula (a) or (b) or (c), and D1 and D2 are not simultaneously selected from the following formula (a). R1, R2, R4, R5, R7 and R8 are each independently H, linear or branched C1˜C4 alkyl, C1˜C4 alkoxy or sulfo; m=0-3. Each R3 is independently selected from amino, sulfo, ureido, C1˜C4 alkyl, C1˜C4 alkanoylamino or C1˜C4 alkoxy, n=0-3, and each R6 is independently selected from hydroxyl, amino and sulfo. X1, X2 and X3 are each independently H, C1˜C4 alkyl, C1˜C4 alkoxy, —SO2Y1, —NHCO(CH2)pSO2Y2 or —CONH(CH2)qSO2Y3, and at least one of D1 and D2 contains a fiber-reactive group. Y1˜Y3 are each independently —CH═CH2, —C2H4OSO3H or —CH2CH2Cl, p=1-3, and q=1-3.