2-Propenoic acid, 2-methyl-, 2,3-dihydroxypropyl ester, polymer with 2-hydroxyethyl 2-methyl-2-propenoate, and 1,2-ethanediyl bis (2-methyl-2-propenoate) 82356-44-3 Hioxifilcon A Hioxifilcon A [USAN]