Diester monomer, its polymer, water-containing soft contact lens, and processing solution for contact lens.

摘要

A diester monomer is represented by the formula (I) <CHEM> wherein R1, R2 and R3 represent a hadrogen atom, an alkoxy, alkenyloxy or hydroxyalkyloxy carbonyl group having 1 to 20 carbon atoms, or a phosphorylcholine derivative group of the formula <CHEM> where Y denotes -(CH2 @ @ , -(CH2CH2O)nCH2CH2 or- <CHEM> n denotes 1 to 8, m is an integer of 0 or 1, R4, R5 and R6 denote an alkyl or aryl group having 1 to 8 carbon atoms, or a hydroxyalkyl group having 2 to 20 carbon atoms; on the proviso that if R1 is a hydrogen atom, neither R2 nor R3 is a hydrogen atom and at least one of R2 and R3 denotes the aforesaid phosphorylcholine derivative group, and that if R2 is a hydrogen atom, neither R1 nor R3 is a hydrogen atom and at least one of R1 and R3 denotes the aforesaid phosphorycholine derivative group. A polymer and a water-containing contact lens are obtained by polymerizing a starting component material including the above-mentioned diester monomer of the formula (I). A contact lens processing solution includes the polymer and a solvent for dissolving the polymer.