Patent · US Active

Yellow anionic disazo dyes

US7723494B2 · kind B2 · utility

1Cited by

7References

9Claims

0Family size

Assignee

Ciba Specialty Chemicals Corporation · US

Inventors

Michael Lennartz · Frankfurt, DE
Adolf Kaser · Bottmingen, CH
Sandra Weiss · Simmerath, DE

Key dates

Filing date	Jan 4, 2008
Grant date	May 25, 2010
Priority date	—
Expiry date	Mar 1, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S8/92
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention relates to novel yellow anionic dyes, a process for their preparation, certain novel intermediates necessary for their preparation and the use of these dyes for dyeing natural or synthetic materials, in particular, paper.

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