Patent · US Expired

Azo dyes having an oxdiazolyl-1,2,4 group

US4206113A · kind A · utility

2Cited by

1References

3Claims

0Family size

Assignee

BASF SE

Inventors

Peter Dimroth · Ludwigshafen, DE
Walter Kurtz · Bad Dürkheim, DE
Volker Radtke · Haßloch, DE
Werner Juenemann · Bad Dürkheim, DE

Key dates

Filing date	May 5, 1978
Grant date	Jun 3, 1980
Priority date	—
Expiry date	May 5, 1998

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B67/008
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Dyes of the formula I ##STR1## in which A is phenyl or phenyl substituted by chloro, bromo, nitro, methyl, ethyl, methoxy or ethoxy; B.sup.1 is hydrogen, chloro, bromo, nitro, methyl or trifluoromethyl; B.sup.2 is hydrogen, chloro, bromo or nitro; R is C.sub.1 to C.sub.4 alkyl; and X is hydrogen, chloro or bromo. The compounds are distinguished by high color strength, brilliance and good fastness properties such as light-fastness, fastness to overspraying, plasticizers fastness and insolubility in most solvents used in connection with pigments. They are particularly suitable for the coloring of air-drying surface coatings, rigid polyvinyl chloride and emulsion paints.

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