Patent · US Expired

Cationic 1,3,4-thiadiazole dyestuffs

US5436323A · kind A · utility

5Cited by

4References

7Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Horst Berneth · Leverkusen, DE
Werner Hartwich
Karl-Heinrich Lange · Burscheid, DE

Key dates

Filing date	Jul 1, 1993
Grant date	Jul 25, 1995
Priority date	—
Expiry date	Jul 1, 2013

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B44/06
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Cationic 1,3,4-thiadiazolyldiphenylamine dyestuffs and corresponding anhydro bases, the dyestuffs having the formula (I) ##STR1## their preparation and their use, and materials dyed with such dyestuffs.

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