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. 24, 2000
Filed:
Oct. 29, 1992
Kazufumi Yokogawa, Munich, DE;
Takahiko Fujisaki, Toyonaka, JP;
Miyao Takahashi, Chiba-ken, JP;
Shigeru Kawabata, Ibaraki, JP;
Naoki Harada, Ibaraki, JP;
Kingo Akahori, Toyonaka, JP;
Yutaka Kayane, Ikoma, JP;
Takashi Omura, Kobe, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
An asymmetric dioxazine compound represented by the following formula (I) in the free acid form: ##STR1## wherein A.sub.1 and A.sub.2 independently of one another are each sulfo, halo, alkyl or alkoxy, X.sub.1 and X.sub.2 independently of one another are each hydrogen, halo, alkyl, alkoxy or phenoxy, R.sub.1 is hydrogen or unsubstituted or substituted alkyl, R.sub.2 and R.sub.3 independently of one another are each hydrogen, alkyl, alkoxy, halo or unsubstituted or substituted amino, Z is a fiber-reactive group, m and n independently of one another are each 0 or 1, provided that m.noteq.n, and L is 1 or 2. This compound is suitable for dyeing and printing cellulose fiber, natural and synthetic polyamide fibers, polyurethane fiber, leather and the like and mixed yarns thereof, to obtain dyed or printed products of a color fast to light, wetness and chlorine with superior build-up and level dyeing properties.