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. 20, 1989
Filed:
Sep. 29, 1987
Toshihiko Morimitsu, Minoo, JP;
Sadanobu Kikkawa, Minoo, JP;
Naoki Harada, Suita, JP;
Takashi Omura, Ashiya, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
A monoazo compound of the following formula in a free acid form, ##STR1## wherein R.sub.1 is alkyl, .beta.-carboxyethyl, .beta.-carboxyvinyl or phenyl, R.sub.2, R.sub.3 and R.sub.4 are each hydrogen or alkyl, A.sub.1 and A.sub.2 are each phenylene or naphthylene, B is ##STR2## in which R.sub.5 is hydrogen, methyl or sulfo, L is hydrogen or sulfo, and the asterisked linkage is bonded to the azo group, and Z.sub.1 and Z.sub.2 are each --SO.sub.2 CH.dbd.CH.sub.2, --SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H or the like, which is useful for dyeing or printing fiber materials to give dyed or printed products of extremely deep red color excellent in various fastness properties and dischargeability.