×

Soluble trisazo dyestuffs containing a 2-phenyl-benzimidazolyl, -benzoxazolyl or -benzthiazolyl middle component

  • US 4,144,231 A
  • Filed: 05/10/1977
  • Issued: 03/13/1979
  • Est. Priority Date: 05/19/1976
  • Status: Expired due to Term
First Claim
Patent Images

1. A water soluble trisazo dyestuff of the formula


  • space="preserve" listing-type="equation">B.sub.1 -N═

    N-Z-N═

    N-M-N═

    N-B.sub.2
wherein M is ##STR37## B1 and B2 are the same or different and are selected from the group consisting of ##STR38##

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×