Carbonyl, Oxygen Or Sulfur Bonded Directly To He Nitrogen Patents (Class 552/250)
  • Anthraquinone compound
    Publication number: 20030149092
    Abstract: A novel compound with anthraquinone structure and having the following foluma (I): 1
    Type: Application
    Filed: December 20, 2001
    Publication date: August 7, 2003
    Applicant: Industrial Technology Research Institute
    Inventors: Lain-Tze Lee, jinun-Ban Yeh
  • Quinizarin compound, method for production thereof, and use therefor
    Patent number: 5817843
    Abstract: This invention is to provide a novel quinizarin compound which has a quinizarin structure represented by a following formula (1) having one to four of the 5, 6, 7, and 8 positions and at least either the 6 or 7 position formed of at least one member selected from the class consisting of secondary amino groups, alkylthio groups, and optionally substituted phenylthio groups, and having the remaining positions thereof formed of at least one member selected from the class consisting of hydrogen atom, halogen atoms, amino group, hydroxy group, alkoxy groups, and optionally substituted phenoxy groups, a method for the production thereof, and a dye, an electrophotographic grade color toner composition, a thermal-transfer recording sheet, an optical recording medium, an ink jet grade ink composition and a color filter severally comprising the quinizarin compound.
    Type: Grant
    Filed: October 16, 1996
    Date of Patent: October 6, 1998
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Kiyoshi Masuda, Yukie Tamaura, Osamu Kaieda
  • Quinizarin compound, method for production thereof, and use therefor
    Patent number: 5608091
    Abstract: This invention is to provide a novel quinizarin compound which has a quinizarin structure represented by a following formula (1) having one to four of the 5, 6, 7, and 8 positions and at least either the 6 or 7 position formed of at least one member selected from the class consisting of secondary amino groups, alkylthio groups, and optionally substituted phenylthio groups, and having the remaining positions thereof formed of at least one member selected from the class consisting of hydrogen atom, halogen atoms, amino group, hydroxy group, alkoxy groups, and optionally substituted phenoxy groups, a method for the production thereof, and a dye, an electrophotographic grade color toner composition, a thermal-transfer recording sheet, an optical recording medium, an ink jet grade ink composition and a color filter severally comprising the quinizarin compound.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: March 4, 1997
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Kiyoshi Masuda, Yukie Tamaura, Osamu Kaieda
  • Preparation of 1-nitroanthraquinone-2-carboxylic acids
    Patent number: 5245058
    Abstract: 1-Nitroanthraquinone-2-carboxylic acids of the general formula I ##STR1## where X is hydrogen, chlorine or bromine, are prepared by oxidizing a 1-nitro-2-methylanthraquinone of the general formula II ##STR2## with nitric acid in an organic reaction medium.
    Type: Grant
    Filed: August 27, 1992
    Date of Patent: September 14, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Hagen, Jacques Dupuis, Michael Acker, Udo Bergmann