公开(公告)号：US20210139709A1

公开(公告)日：2021-05-13

申请号：US16341280

申请日：2017-10-18

Applicant: SAKAI CHEMICAL INDUSTRY CO., LTD.

Inventor： Tsutomu YAMAMOTO ,  Hironobu OGATA ,  Hiroaki HAMAMURA ,  Masayuki ASADA

IPC: C09C3/12 ,  C09C1/00 ,  C09C3/08 ,  C08K9/06 ,  C08K9/04 ,  C08K3/30 ,  C09D7/62 ,  C09D7/40

Abstract: The present invention relates to fine barium sulfate powder that can be readily and simply dispersed in resins or solvents; a resin composition, a coating composition, an ink composition, and a resin molded article each containing the barium sulfate powder; and a method for producing the barium sulfate powder. Provided is barium sulfate powder having a number average primary particle size of 1 to 100 nm, the powder including an organic compound on its surface, the powder in the form of compressed compact having a contact angle with distilled water of 10 to 170 degrees.