Nitrogen, Other Than As Nitro Or Nitroso, Attached Directly Or Indirectly To The Tricyclo Ring System By Nonionic Bonding Patents (Class 546/99)
The nitrogen is bonded directly to a carbocyclic ring of the tricyclo ring system (Class 546/100)
  • N-Acylaminonaphthalimides
    Patent number: 4139532
    Abstract: Compounds of the formula: ##STR1## in which one R is identical with or different from the other R and each is alkyl, hydroxyalkyl, alkoxyalkyl, haloalkyl, cycloalkyl, aralkyl, aryl, N,N-dialkylaminoalkyl or quaternized N,N-dialkylaminoalkyl; A is ##STR2## or ##STR3## R.sup.1 is hydrogen, substituted or unsubstituted alkyl, cycloalkyl, aralkyl, aryl or heteroaryl;B is --CH.dbd.CH--, --CCl.dbd.CH--, --CCl.dbd.CCl--, --CH.dbd.CBr--, --CH.sub.2 --CH.sub.2 --,1,2-phenylene, 1,8-naphthylene or 1,2-phenylene or 1,8-naphthylene bearing chloro, bromo, methoxy or ethoxy as a substituent; and T is acyl.The compounds are eminently suitable as optical brighteners, particularly for polyesters and blends of polyester and cotton.
    Type: Grant
    Filed: May 14, 1976
    Date of Patent: February 13, 1979
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Scheuermann, Albert Hettche