| abstract |
A copolymer comprising a structural unit derived from a phosphate ester monomer (1) such as diethyl methacryloxymethyl phosphate, diethyl 2-methyl propylene methoxyethyl phosphate (I), structure of a radically polymerizable monomer (2) derived from methacrylic acid, acrylic acid, 8-tricyclo[5.2.1.02,6]nonyl methacrylate, butyl methacrylate or the like The unit (II) and the structural unit (III) derived from methyl methacrylate, and the content of the phosphorus atom derived from the phosphate monomer (1) is 1.0% by mass or more based on the mass of the copolymer. Less than 2.0% by mass. A shaped body containing the copolymer. |