US 12,103,859 B2
Calcium carbonate with controlled particle morphology, method for producing the same, and crystal growth method
Yuki Kezuka, Amagasaki (JP); and Maya Yoshida, Amagasaki (JP)
Assigned to SHIRAISHI CENTRAL LABORATORIES CO. LTD., Hyogo (JP)
Filed by SHIRAISHI CENTRAL LABORATORIES CO. LTD., Amagasaki (JP)
Filed on Sep. 20, 2023, as Appl. No. 18/370,554.
Application 18/370,554 is a division of application No. 17/510,725, filed on Oct. 26, 2021, granted, now 11,999,627.
Claims priority of application No. 2020-185757 (JP), filed on Nov. 6, 2020.
Prior Publication US 2024/0010509 A1, Jan. 11, 2024
Int. Cl. C01F 11/18 (2006.01); C08K 3/26 (2006.01); C08L 57/00 (2006.01); C08L 87/00 (2006.01)
CPC C01F 11/185 (2013.01) [C08K 3/26 (2013.01); C08L 57/00 (2013.01); C08L 87/00 (2013.01); C01P 2004/64 (2013.01); C01P 2006/12 (2013.01); C08K 2003/265 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A calcium carbonate having a calcite structure, having a BET specific surface area of 2 to 50 m2/g, and having a number-based average particle size of 30 nm to 1.0 μm as determined by electron microscopy, the calcium carbonate partially comprising substantially ring-like particles.