公开(公告)号：US09783680B2

公开(公告)日：2017-10-10

申请号：US14891180

申请日：2014-05-14

Applicant: KAO CORPORATION

Inventor： Hironobu Fukuroi ,  Takahiro Sato ,  Isao Tsuru ,  Yusuke Shimizu ,  Yasufumi Ueda

IPC: C09B67/02 ,  C09B67/00 ,  C09D11/00 ,  C09B67/46 ,  C09D11/322 ,  C09B67/20 ,  C09D17/00

CPC classification number: C09B67/0022 ,  C09B67/006 ,  C09B67/0086 ,  C09B67/0089 ,  C09B67/009 ,  C09D11/00 ,  C09D11/322 ,  C09D17/003

Abstract: The present invention provides the following process for producing a fine organic pigment which is capable of producing the fine organic pigment that has a very small primary particle size and is excellent in filtering property even in a cleaning step, and a fine organic pigment produced by the process; a process for producing a dispersion using the fine organic pigment, and a dispersion produced by the process; and a process for producing an ink using the dispersion. The present invention relates to [1] a process for producing a fine organic pigment, including steps 1 and 2: step 1: kneading a mixture prepared by compounding a raw material organic pigment, a water-soluble inorganic salt, a water-soluble organic solvent and a compound represented by the following formula (1) with each other, the compound being compounded in an amount of not less than 0.8 part by mass and not more than 18.0 parts by mass on the basis of 100 parts by mass of the raw material organic pigment: R1O(PO)m(EO)nA (1); and step 2: subjecting the mixture obtained in the step 1 to cleaning treatment with an aqueous solvent and then to filtration, [2] a fine organic pigment produced by the process according to the above aspect [1], [3] a dispersion produced using the fine organic pigment according to the above aspect [2], [4] a process for producing a paste of a fine organic pigment, including the above step 1 and 2, [5] a process for producing a dispersion, including step 3 of subjecting the paste of the fine organic pigment produced by the process according to the above aspect [4], an organic solvent and water to dispersing treatment, and [6] a process for producing an ink, including step 4 of mixing the dispersion produced by the process according to the above aspect [5] with at least one material selected from the group consisting of water and an organic solvent.

公开(公告)号：US11142661B2

公开(公告)日：2021-10-12

申请号：US16626215

申请日：2018-06-15

Applicant: KAO CORPORATION

Inventor： Tomoaki Il ,  Isao Tsuru ,  Norihiro Yoshida ,  Yoshiharu Niizeki ,  Jun Tairadate ,  Kimiya Yamada ,  Hideki Sakai

IPC: C09D11/322 ,  B41J11/00 ,  C09D11/326 ,  C09D11/40

Abstract: The present invention relates to an ink-jet printing method using an apparatus including a printing means for ejecting a black ink to a printing substrate to print characters or images on the printing substrate, and a drying means disposed on a downstream side of a transportation direction of the printing substrate, in which the printing substrate is a label printing substrate; the black ink is a water-based composite black ink; the water-based composite black ink contains a composite black pigment containing carbon black, and a content of the carbon black in the composite black pigment is not more than 25% by mass; and the drying means is an infrared heater for heating the water-based composite black ink ejected onto the printing substrate to a temperature of not lower than 95° C. and not higher than 125° C. According to the ink-jet printing method of the present invention, it is possible to obtain a good printed material that is free of color migration or deformation of a printing substrate even when printed on a label printing substrate.