C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 17/00 (2006.01) C09C 1/48 (2006.01) C09C 1/62 (2006.01) C09D 5/38 (2006.01)
Patent
CA 2531470
A first pigment made of a coloring pigment having a primary average particle diameter of 200 nm or smaller, or made of carbon black having an average particle diameter of a structure of 100 nm or smaller, and a second pigment made of barium sulfate having a primary average particle diameter of 55 nm or smaller are combined so that a value of (acid amount-base amount) of one pigment becomes positive, and a value of (acid amount-base amount) of other pigment becomes negative. The combined first and second pigments are dispersed in a medium in the presence of a pigment dispersant.
Un premier pigment composé d'un pigment dont les particules ont un diamètre primaire moyen de 200 nm ou moins, ou de noir de carbone dont les particules ont un diamètre moyen de 100 nm ou moins, et un second pigment composé de sulfate de baryum dont les particules ont un diamètre primaire moyen de 55 nm ou moins sont combinés de sorte que la valeur (quantité d'acide - quantité de base) d'un des pigments devienne positive, et que la valeur (quantité d'acide - quantité de base) de l'autre devienne négative. Les deux pigments combinés sont dispersés dans un milieu en présence d'un agent de dispersion des pigments.
Egusa Hifumi
Koizumi Takashi
Nanke Makiko
Shimada Shinji
Sudo Nobuhisa
G. Ronald Bell & Associates
Nippon Paint Co. Ltd.
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