Patent · US Expired

Azo dyes and their preparation and use

US6562115B2 · kind B2 · utility

2Cited by
16References
11Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 29, 2001
Grant dateMay 13, 2003
Priority date—
Expiry dateOct 10, 2021

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S8/919
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

Monoazo dyes of formulas (III) wherein R1, R2, R3, D1 and M are as defined in the specification, are excellent dyes for dyeing and printing of cellulose containing materials and especially for the preparation of inks for ink jet printing.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.