	US 11,702,530 B2
	Surface-treated calcium carbonate and production method therefor, and vinyl chloride-based resin composition and molded body thereof
Yutaka Minamino, Amagasaki (JP); Kenichiro Eguchi, Amagasaki (JP); and Yoshisada Kayano, Osaka (JP)
Assigned to SHIRAISHI KOGYO KAISHA, LTD., Osaka (JP)
Appl. No. 17/607,122
Filed by SHIRAISHI KOGYO KAISHA, LTD., Osaka (JP)
PCT Filed May 20, 2020, PCT No. PCT/JP2020/019916 § 371(c)(1), (2) Date Oct. 28, 2021, PCT Pub. No. WO2020/241409, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 2019-101285 (JP), filed on May 30, 2019.
Prior Publication US 2022/0220283 A1, Jul. 14, 2022
Int. Cl. C08K 9/04 (2006.01); C08K 3/26 (2006.01); C08L 27/06 (2006.01); C09C 3/08 (2006.01)

CPC C08K 9/04 (2013.01) [C08K 3/26 (2013.01); C08L 27/06 (2013.01); C09C 3/08 (2013.01); C08K 2003/265 (2013.01)]

7 Claims

1. A surface-treated calcium carbonate being a calcium carbonate subjected to treatment with a surface treatment agent in which a proportion of saturated fatty acid contained in a fatty acid is 85% by mass or more, the surface-treated calcium carbonate having a content of elemental iron of 0.001 to 0.01% by mass, a content of elemental zinc of 0.1 to 2% by mass introduced by the treatment with the surface treatment agent, and a BET specific surface area of 5 to 30 m²/g.