Patent ID: 11970585
Assignee: NIPPON SHOKUBAI CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC C  B | IPC C

Claim 9:
10. The method according to claim 1, wherein
the aqueous liquid is added a plurality of times in the granulation step vi-1);
a surface tension of an extract extracted from the granulated gel with a 0.9% by mass sodium chloride aqueous solution is 70 mN/m or more, the granulated gel being obtained by mixing the aqueous liquid added in the first time and the fine powder,
at least one time addition of the aqueous liquid out of aqueous liquids of a second and later addition contains a surfactant, and
a surface tension of an extract extracted from the granulated gel with a 0.9% by mass sodium chloride aqueous solution is 60 mN/m or more, the granulated gel being obtained by mixing the aqueous liquid containing the surfactant.