Plural Oxygens Bonded Directly To The Same Monocyclic Benzene Ring Patents (Class 534/869)
  • Patent number: 5510468
    Abstract: There are described benzophenoneazo dyes of the formula ##STR1## where the ring A can be benzofused and a benzofused ring A can be overbridges,m is 1 or 2,K is the radical of a coupling component,Y is hydrogen or arylazo,one of the two radicals X.sup.1 and X.sup.2 is hydrogen and the other is hydroxysulfonyl,R.sup.1, R.sup.2 and R.sup.3 are independently of the others hydrogen, halogen, C.sub.1 -C.sub.12 -alkyl, cyclohexyl, phenyl, 2-hydroxy-ethylsulfonyl or C.sub.1 -C.sub.4 -alkoxy or, when m is 1 and Y is hydrogen, one of these substituents can also be the radical of the formula ##STR2## where L.sup.1 is a chemical bond or a bridge member, and X.sup.1, X.sup.2, R.sup.4, K and the ring A are each as defined above, andR.sup.4 is hydrogen, halogen or C.sub.1 -C.sub.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: April 23, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Gunther Lamm, Helmut Reichelt, Ortwin Schaffer
  • Patent number: 5451702
    Abstract: A process for preparing substituted aromatic amines is provided which comprises contacting a nucleophilic compound and an azo containing compound in the presence of a suitable solvent system, reacting the nucleophilic compound and the azo containing compound in the presence of a suitable base and a controlled amount of protic material at a temperature of about 10.degree. C. to about 150.degree. C. in a confined reaction zone wherein the molar ratio of protic material to base is 0:1 to about 5:1 and reducing the product of the reaction of the nucleophilic compound and the azo containing compound under conditions which produce the substituted aromatic amine. In another embodiment, the substituted aromatic amines of the invention are reductively alkylated to produce alkylated diamines or substituted derivatives thereof.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: September 19, 1995
    Assignee: Monsanto Company
    Inventors: Michael K. Stern, Brian K-M Cheng
  • Patent number: 5380859
    Abstract: There are described benzophenoneazo dyes of the formula ##STR1## where the ring A can be benzofused and a benzofused ring A can be overbridged,m is 1 or 2,K is the radical of a coupling component,Y is hydrogen or arylazo,one of the two radicals X.sup.1 and X.sup.2 is hydrogen and the other is hydroxysulfonyl,R.sup.1, R.sup.2 and R.sup.3 are independently of the others hydrogen, halogen, C.sub.1 -C.sub.12 -alkyl, cyclohexyl, phenyl, 2-hydroxyethylsulfonyl or C.sub.1 -C.sub.4 -alkoxy or, when m is 1 and Y is hydrogen, one of these substituents can also be the radical of the formula ##STR2## where L.sup.1 is a chemical bond or a bridge member, andX.sup.1, X.sup.2, R.sup.4, K and the ring A are each as defined above, andR.sup.4 is hydrogen, halogen or C.sub.1 -C.sub.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: January 10, 1995
    Assignee: Basf Aktiengesellschaft
    Inventors: Gunther Lamm, Helmut Beichelt, Ortwin Schaffer