公开(公告)号：US11434378B2

公开(公告)日：2022-09-06

申请号：US16341280

申请日：2017-10-18

申请人： SAKAI CHEMICAL INDUSTRY CO., LTD.

发明人： Tsutomu Yamamoto ,  Hironobu Ogata ,  Hiroaki Hamamura ,  Masayuki Asada

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

摘要： 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.