| 主权项 |
1. A method for producing a sterilized medical formed article comprising applying high-energy rays to a medical formed article at an exposure E, the medical formed article being formed of a resin composition that comprises a hydrogenated block copolymer and a phenol-based antioxidant, the hydrogenated block copolymer being obtained by hydrogenating 99% or more of unsaturated bonds of a block copolymer that comprises at least two polymer blocks [A] and at least one polymer block [B], the polymer block [A] comprising a repeating unit derived from an aromatic vinyl compound as a main component, the polymer block [B] comprising a repeating unit derived from a linear conjugated diene compound as a main component, and a ratio (wA:wB) of a weight fraction wA of the polymer block [A] in the block copolymer to a weight fraction wB of the polymer block [B] in the block copolymer being 30:70 to 70:30, and
the resin composition comprising the phenol-based antioxidant in a ratio of W to 0.50 parts by weight based on 100 parts by weight of the hydrogenated block copolymer, W being calculated by an expression (1),
W=[0.46×(100−H)+0.04]×(E/25) (1)where, W is the ratio (parts by weight) of the phenol-based antioxidant based on 100 parts by weight of the hydrogenated block copolymer, H is the hydrogenation rate (%) of the hydrogenated block copolymer, H is a numerical value from 99 to 100, and E is the exposure (kGy) of the high-energy rays. |
