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Patent Searching and Data


Title:
CARBON BLACK-CONTAINING PIGMENT
Document Type and Number:
Japanese Patent JPH0593148
Kind Code:
A
Abstract:

PURPOSE: To provide a carbon black-contg. pigment having improved abrasion resistance substantially without technical effort, and a process for producing the same.

CONSTITUTION: A carbon black-contg. pigment having an improved abrasion resistance and obtd. by mixing a substrate in the form of an aq. suspension thereof with a carbon black dispersion, measuring and feeding an aq. soln. of at least one metal salt into the aq. mixture of the substrate and carbon black, and forming a carbon black-contg. metal hydroxide layer and, if necessary, a carbon black-free metal hydroxide layer on the substrate by the hydrolysis to coat the substrate. This process is characterized in that after the product is separated and, if necessary, washed and dried, the product is calcined at 700 to 900°C in the absence of oxygen.


Inventors:
KONSUTANTSUE PURENGERU
KURAUSU BERUNHARUTO
Application Number:
JP5882292A
Publication Date:
April 16, 1993
Filing Date:
February 13, 1992
Export Citation:
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Assignee:
MERCK PATENT GMBH
International Classes:
C09C1/56; A61K8/18; A61Q1/02; C09B67/08; C09C1/00; C09C1/40; C09C3/06; (IPC1-7): A61K7/02; C09B67/08; C09C1/56; C09C3/06
Attorney, Agent or Firm:
Wakabayashi Tadashi