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:
Mar. 29, 1983
Filed:
May. 27, 1980
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
The compounds represented, in the form of free acid, by the following general formula (I): ##STR1## (wherein A is ##STR2## (wherein R.sub.3 and R.sub.4 are each hydrogen or a methyl, ethyl, methoxy, ethoxy, acetylamino, propionylamino, benzoylamino or ureido group, and R.sub.5 and R.sub.6 are each hydrogen or a methyl or methoxy group), R.sub.1 and R.sub.2 are each hydrogen or a methyl, ethyl or sulfomethyl group, X.sub.1 and X.sub.2 are each hydrogen, chlorine or a methyl, methoxy, carboxyl or sulfonic acid group, m is a number of 0, 1 or 2, and n is a number of 1 or 2, provided that the sum of m and n is 1, 2 or 3). These compounds are capable of dyeing cellulose fibers in yellow with excellent color fastness to hypochlorite, light, perspiration and sunlight and high acid stability.