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:
May. 19, 1987
Filed:
Feb. 13, 1981
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
A red reactive dye represented by a free acid of the formula, ##STR1## wherein X is a hydrogen atom, a methyl, methoxy or sulfonic acid group, Y is --CH.dbd.CH.sub.2, --CH.sub.2 CH.sub.2 Y.sub.1 or --CH.sub.2 CH.sub.2 OY.sub.2 (in which Y.sub.1 is a halogen atom, and Y.sub.2 is the residue of polybasic acids), R is a C.sub.1 -C.sub.4 alkyl group, R.sub.1 and R.sub.2 are each a hydrogen atom, a methyl or ethyl group, and the azo group is located on a meta-or para-position of the benzene ring A with respect to the --NR.sub.2 -- group and the sulfonic acid group on the benzene ring A is adjacent to the azo group. This dye is suitable for dyeingcellulose fibers red to afford dyeings superior in fastnesses, acid stability, build-up property, level dyeing property and white dischargeability.