The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 1978
Filed:
Aug. 25, 1976
Applicant:
Inventors:
Herbert Holliger, Allschwil, CH;
Heinz Wicki, Basel, CH;
Assignee:
Sandoz Ltd., Basel, CH;
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; C09B / ;
U.S. Cl.
CPC ...
2601 / ; 260144 ; 2601 / ; 2601 / ; 2601 / ; 2601 / ; 260147 ; 260148 ; 260155 ; 260159 ; 260160 ; 260161 ; 260166 ; 260167 ; 260168 ; 260171 ; 260172 ; 260173 ; 260175 ; 260177 ; 260178 ; 260181 ; 260184 ; 260187 ; 2604 / ; 562474 ; 562475 ; 562476 ; 562477 ;
Abstract
Metal complex polyazo dyes having, as a coupling component radical, the radical of a coupling component K, being the product of the condensation, under acidic conditions, of the formaldehyde with a compound or mixture of compounds of formula (a), ##STR1## AND/OR A COMPOUND OR MIXTURE OF COMPOUNDS OF FORMULA (B), ##STR2## WHEREIN EACH R.sub.1 , R.sub.2, R.sub.3 and R.sub.4 is independently is hydrogen, halogen, hydroxy or optionally substituted alkyl or alkoxy, and