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:
Jun. 06, 1989
Filed:
Jan. 09, 1987
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
A monoazo compound of the following formula in a free acid form, ##STR1## wherein R.sub.1, R.sub.2 and R.sub.4 are independently hydrogen or lower alkyl, R.sub.3 is lower alkyl, acyl or (sulfo)- phenyl, R.sub.5 is hydrogen or sulfo, B is (sulfo)phenylene or sulfonaphthylmethylene, X is chlorine, fluorine, phenoxy or (substituted)amino, A is (substituted)phenylene or (substituted)naphthylene, and Z is --SO.sub.2 CH.dbd.CH.sub.2 or --SO.sub.2 CH.sub.2 CH.sub.2 Y in which Y is a splittable group by the action of an alkali, which meets requirements of high degree in a dye industry with respect to dyeing properties such as build-up property and fastness properties such as formalin fastness, formalin-light fastness.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile