Diketopyrrolopyrrole-type pigment composition for color filters, colored composition for color filters, and color filter
A technology of diketopyrrolopyrrole and color filter, which is applied in the field of color filter and can solve the problems of foreign matter and the like
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no. 1 Embodiment approach
[0065] (Diketopyrrolopyrrole pigment composition)
[0066] The first embodiment is a diketopyrrolopyrrole pigment composition for color filters containing a diketopyrrolopyrrole pigment represented by the following formula (1) and a diketopyrrolopyrrole pigment represented by the following formula (A-2). The diketopyrrolopyrrole pigment composition for color filters of the specific hetero diketopyrrolopyrrole pigment, the content of the specific hetero diketopyrrolopyrrole pigment represented by the following formula (A-2) is represented by pyrrolopyrrole The total mass of the diketopyrrole pigments is based on 1% by mass to 15% by mass.
[0067] As a result of intensive studies, the inventors of the present invention found that brominated diketopyrrolopyrrole pigment (formula (1)) With color filters, the brightness will increase. It was further found that a diketopyrrolopyrrole pigment (formula (A-2) (hereinafter, referred to as "specific hetero diketopyrrolopyrrole pigment...
no. 2 Embodiment approach
[0246] (Diketopyrrolopyrrole pigment composition)
[0247] The diketopyrrolopyrrole pigment composition for color filters according to the second embodiment contains a brominated diketopyrrolopyrrole pigment represented by the following formula (1) and a specific pigment represented by the following formula (B-2). Diketopyrrolopyrrole pigment composition for a color filter of a hetero diketopyrrolopyrrole pigment, wherein the mass ratio of the following formula (1) to the following formula (B-2) is 97:3 to 85:15 scope.
[0248] As a result of intensive studies accumulated by the present inventors, it was found that instead of the conventionally used C.I. Pigment Red 254 (chlorinated diketopyrrolopyrrole pigment) filter, the brightness will increase. It was further found that by using the brominated diketopyrrolopyrrole pigment and a diketopyrrolopyrrole pigment (formula (B-2) (hereinafter, referred to as "specific heteropyrrolopyrrole) with asymmetrically introduced substitu...
no. 3 Embodiment approach
[0286] (coloring composition for color filter)
[0287] The coloring composition for color filters of 3rd Embodiment contains the diketopyrrolopyrrole pigment composition of 1st Embodiment. The diketopyrrolopyrrole pigment composition of the first embodiment can be used as a coloring composition by using it together with a binder resin and an organic solvent. Moreover, you may use together the coloring agent other than the diketopyrrolopyrrole pigment composition of 1st Embodiment. For example, the diketopyrrolopyrrole pigment composition of the second embodiment can also be used.
[0288] (other colorants)
[0289] In order to adjust the chromaticity, etc., the coloring composition of the third embodiment may be used in combination with pigments or dyes other than the diketopyrrolopyrrole pigment composition of the first embodiment, either alone or 2 or more.
[0290] When using a colorant other than the diketopyrrolopyrrole pigment composition in combination, the diketop...
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