Abstract:
Provided are a coloring composition which produces a color filter having higher contrast ratio by establishing a fine pigment efficiently in a short time, and a color filter using the same. The coloring composition for a color filter contains a carrier for a pigment which is comprised of a transparent resin, a precursor of the transparent resin or a mixture thereof, and a pigment, wherein the pigment is a fine organic pigment obtained by kneading a mixture containing an organic pigment, an edible salt and a water-soluble organic solvent, and the edible salt has a median diameter of a particle(D50) of 1-50 micrometers, a 95% diameter of a particle(D95) of 80 micrometers or less and a content of Mg of 0.002-0.08 wt%.
Abstract:
Provided are a method for preparing a pigment composition, which enables a proper amount of a pigment composition to be timely produced and is small in quality deviation of products in lots, and a colored composition obtained thereby, which forms a color filter having a high contrast ratio. The method for preparing a pigment composition comprises a step of kneading a mixture including an organic pigment, water-soluble inorganic salts, water-soluble organic liquid, and a resin using a continuous kneader(10). The kneader(10) comprises a driving shaft(121), an annular fixed disc(21), a rotary disc(23) that has the same center with the fixed disc(21) and rotates around the driving shaft(121) integrally, and a dedifferentiated space formed in a gap between the fixed disc(21) and the rotary disc(23). The resin is a rosin resin.
Abstract:
Provided is a method for preparing an epsi-form phthalocyanine pigment which is applied to the field requiring a high gloss, a high coloration strength and a good transparency or an ink-jet printer ink. The method comprises the step of kneading a kneading mixture comprising an alpha-form phthalocyanine, an epsi-form phthalocyanine, a water-soluble inorganic salt and a water-soluble organic solvent with a continuous kneader which is provided with a cylindrical casing, a circular fixed disc installed on the casing with an identical center, a drive shaft, a rotation disc to be rotated by the drive shaft, and a pulverization space formed at the gap between the fixed disc and the rotation disc.
Abstract:
α 형태의 프탈로시안, ε 형태의 프탈로시안, 수용성 무기염 및 수용성 유기용매를 포함하는 니딩 혼합물을 실린더형 캐이싱, 상기 캐이싱에 동심으로 설치된 환상 고정 디스크, 구동 샤프트, 상기 구동 샤프트 수단에 의해 회전하는 회전 디스크 및 상기 고정 디스크와 회전 디스크 사이의 갭에 형성된 분쇄 공간을 포함하는 연속 니더로 니딩하는 단계를 포함하는 ε 형태의 프탈로시안 안료 제조방법이 제공된다. ε 형태의 프탈로시안 염료, 연속 니더, 잉크젯 인쇄용 잉크, 선명성
Abstract:
단시간에 효율 좋게 미세화 및 정립(整粒)된 안료를 사용해서 콘트라스트비가 높은 칼라필터를 형성할 수 있는 칼라필터용 착색 조성물을 제공한다. 투명 수지, 그 전구체 또는 그들의 혼합물로 이루어지는 안료담체와, 안료를 함유하는 칼라필터용 착색 조성물로서, 상기 안료가, 유기 안료와, 식염과, 수용성 유기용제를 함유하는 혼합물을 혼련함으로써 미세화된 미세 유기 안료이며, 상기 식염의 체적기준의 메디안입자경(D50)이 1~50㎛, 95% 입자경(D95)이 80㎛이하이며, Mg함유량이 0.002~0.08중량%인 것을 특징으로 하는 칼라필터용 착색 조성물. 칼라필터, 착색 조성물, 미세화, 콘트라스트비, 안료담체
Abstract:
This invention is to solve the problems in a conventional batch-type kneader, etc., such as the limitation on production scale, the lot-to-lot variation of quality, the contamination with foreign materials caused by the open-type structure and the pollution of working environment caused by the generation of dust. A mixture of an organic pigment, a water-soluble inorganic salt and a water-soluble organic liquid is kneaded with a continuous kneader 10 having crushing spaces formed at the gaps between ring-formed stationary disks 21 and rotary disks 23 coaxial to the stationary disks 21 and integrally rotating around the axis of a driving shaft 121.