| 摘要 |
PURPOSE:To reduce the water content of a coloring agent by forming the coloring agent from an org. or inorg. pigment, resin and polypropylene or polybutadiene so as to disperse the pigment in the form of fine particles close to primary particles. CONSTITUTION:The coloring agent is formed from at least one kind of component selected among org. and inorg. pigments and dyes, resin and polypropylene obtd. from liq. polypropylene or polybutadiene obtd. from liq. polybutadiene. The preferred org. pigments include phthalocyanine blue, green and sky blue, and the preferred inorg. pigments include carbon black. Phenolic resin modified with natural resin, dammer or the like are used as the resin. The liq. polypropylene has 50-1,500 average mol.wt., and the liq. polybutadiene has 50-5,000 average mol.wt. |
