PYRIMIDOQUINAZOLINE PIGMENT, METHOD FOR MANUFACTURING PYRIMIDOQUINAZOLINE PIGMENT, AND PIGMENT COLORANT
申请人:DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.
公开号:US20190233649A1
公开(公告)日:2019-08-01
The present invention provides a pyrimidoquinazoline pigment having a novel pyrimidine skeleton, the pyrimidoquinazoline pigment having excellent pigment properties, such as coloring power and durability, and excellent infrared reflectivity and a method for producing the pyrimidoquinazoline pigment, and a pigment colorant using the pyrimidoquinazoline pigment. The present invention relates to a pyrimidoquinazoline pigment represented by the following formula (1), wherein R
1
and R
2
each independently represent a benzene ring or a naphthalene ring optionally having a substituent, and a method for producing the pyrimidoquinazoline pigment. In addition, the present invention relates to a pigment colorant containing the pyrimidoquinazoline pigment.
Novel benzoquinone derivatives and their use as color-developers in recording material, process for their production and the production of corresponding hydroquinones
申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0164260A1
公开(公告)日:1985-12-11
Disclosed herein is a novel benzoquinone derivative represented by the following general formula (I):
wherein R, means an alkyl or cycloalkyl group, R2 denotes an alkyl or cycloalkyl group, a phenyl group which may optionally contain one or more halogen atoms and/or alkyl, cycloalkyl, alkoxy, alkylne, phenoxy, phenyl and/or biphenylyl groups, or a benzyl or naphthyl group which may optionally contain one or more methyl groups. This compound is useful as an oxidative color-developing agent for recording materials. The compound can be prepared by oxidation of the corresponding hydroquinone.
Pyrimidoquinazoline pigment, method for manufacturing pyrimidoquinazoline pigment, and pigment colorant
申请人:DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.
公开号:US10655017B2
公开(公告)日:2020-05-19
The present invention provides a pyrimidoquinazoline pigment having a novel pyrimidine skeleton, the pyrimidoquinazoline pigment having excellent pigment properties, such as coloring power and durability, and excellent infrared reflectivity and a method for producing the pyrimidoquinazoline pigment, and a pigment colorant using the pyrimidoquinazoline pigment. The present invention relates to a pyrimidoquinazoline pigment represented by the following formula (1), wherein R1 and R2 each independently represent a benzene ring or a naphthalene ring optionally having a substituent, and a method for producing the pyrimidoquinazoline pigment. In addition, the present invention relates to a pigment colorant containing the pyrimidoquinazoline pigment.