RESIN COLORING QUINACRIDONE PIGMENT COMPOSITION

WIPO Patent Application WO/2017/002459

A1

The objective of the invention is to provide a quinacridone pigment composition having high transparency and coloring power, whereof the amount of discoloration during resin forming (color change in a molded plate) is extremely small owing to a high heat resistance, for use in coloring plastics, and particularly, engineering plastics; and, a master batch and a resin formed article containing this pigment composition. A resin coloring pigment composition contains a quinacridone pigment and a pigment absorbing in a fluorescence wavelength region of 500 to 600 nm. When used as a coloring material for a resin formed article undergoing a thermal history of particularly high temperatures, the resin coloring pigment composition was found to yield a resin formed article whereof the amount of color change, that is to say, discoloration, was extremely small, and thus, the present invention reached completion.

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OKABE HIDEKI (JP)
HIGUCHI YUKIKO (JP)
SAITOU SHINGO (JP)

PCT/JP2016/064143

January 05, 2017

May 12, 2016

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DAINIPPON INK & CHEMICALS (JP)

C09B67/22; C08J3/22; C08K5/3437; C08L101/00; C09B48/00; C09B67/20

JP2004083673A	2004-03-18
JP2014040035A	2014-03-06
JP2012530165A	2012-11-29

KONO Michihiro (JP)

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