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. 30, 1992
Filed:
Nov. 01, 1990
Applicant:
Inventor:
Peter Smith, Bury, GB;
Assignee:
Imperial Chemical Industries Plc, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C09B / ; C09B / ;
U.S. Cl.
CPC ...
544 76 ; 544 77 ; 8436 ; 8527 ; 8916 ; 8917 ; 8918 ;
Abstract
Unsymmetrical triphendioxazine (TPD) reactive dyes of Formula (1) for the colouration of e.g. wool, silk, leather and cotton are claimed as well as intermediates for their manufacture. ##STR1## wherein W.sup.1 and W.sup.2 are different and each independently of the formula: ##STR2## R.sup.1 and R.sup.2 in each group defined by W.sup.1 or W.sup.2 independently represent H or an optionally substituted hydrocarbon radical or are joined together to form, with B and the two N atoms, a piperazine ring;