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Patent Searching and Data


Title:
COLORED CEMENT MOLDED ARTICLE
Document Type and Number:
Japanese Patent JP2000226243
Kind Code:
A
Abstract:

To provide a colored cement molded article having an excellent color and inhibiting the generation of efforescence by using carbon black having hydrophilic groups in a large amount as a black coloring agent.

The colored cement molded article is obtained by adding and mixing carbon black having carboxyl groups and hydroxyl groups on the surface of the carbon black in a total amount of ≥2 μeq/m2 as a black coloring agent to a cement component and then molding the mixture. The colored cement molded article is also obtained by covering the surface of a cement molded article with a black coating film containing carbon black having carboxyl groups and hydroxyl groups on the surface of the carbon black in a total amount of ≥2 μeq/m2 as a black coloring agent.


Inventors:
ARAI HIROAKI
Application Number:
JP3000799A
Publication Date:
August 15, 2000
Filing Date:
February 08, 1999
Export Citation:
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Assignee:
TOKAI CARBON KK
International Classes:
C04B14/02; C04B14/36; C04B20/10; C09C1/48; (IPC1-7): C04B14/36; C04B14/02; C09C1/48
Attorney, Agent or Firm:
Fukuda Yasuo (1 person outside)