Title:
CHROMIUM-CONTAINING AZO COMPOUND AND OPTICAL RECORDING MEDIUM CONTAINING SAID COMPOUND
Document Type and Number:
Japanese Patent JPS6381165
Kind Code:
A
Abstract:
NEW MATERIAL:The compound of formula I [R1 and R5 are nitro or halogen; R2, R3, R6 and R7 are H, nitro or halogen; R4 and R8 are amino (derivative); X+ is quaternary pyridinium derivative].
EXAMPLE: The compound of formula II.
USE: A light-absorbing pigment for optical recording medium.
PREPARATION: A hydroxyaniline derivative of formula III, etc., is diazotized and the diazo compound is coupled with a naphthol compound of formula IV, etc., to obtain a dihydroxy azo compound. The compound is made to react with chromium acetate and the resultant metal complex is made to react with a quaternary pyridinium derivative of formula V [R9 and R10 are H, (substituted) alkyl, vinyl, alkoxy or halogen; R11 is (substituted) alkyl] to form a salt.
Inventors:
MAEDA SHUICHI
KUROSE YUTAKA
KIMURA YUKIYO
NAKAKUKI JUNKO
KUROSE YUTAKA
KIMURA YUKIYO
NAKAKUKI JUNKO
Application Number:
JP22391386A
Publication Date:
April 12, 1988
Filing Date:
September 24, 1986
Export Citation:
Assignee:
MITSUBISHI CHEM IND
International Classes:
B41M5/26; C09B45/06; C09B45/16; C09B69/02; G11B7/244; G11B7/2467; (IPC1-7): B41M5/26; C09B45/06; G11B7/24
Attorney, Agent or Firm:
Nakaya Moriya
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