Patent ID: 11964042
Assignee: NIPPON SHOKUBAI CO., LTD.
Field: Pharmaceuticals (Chemistry)
Classification: CPC A  C | IPC A  C

Claim 0:
1. An additive for a chemical agent, comprising a polymer (I) containing 50 mol % to 100 mol % of a structural unit derived from an N-vinyl lactam-based monomer with respect to 100 mol % of structural units derived from all monomers,
the additive for a chemical agent having an average particle diameter of 100 μm or less in a state of having been dried under a reduced pressure of 0.02 MPa or less at 100° C. for 1 hour,
wherein:
the polymer (I) has a crosslinked structure derived from a crosslinking agent,
the crosslinking agent is at least one kind selected from the group consisting of pentaerythritol tetraallyl ether, pentaerythritol triallyl ether, pentaerythritol diallyl ether, and (di, tri, tetra, penta, hexa, hepta, and octa)allyl sucroses, and
an average particle diameter of a swelled body obtained by swelling the additive for a chemical agent with deionized water is 2 μm or less.