Method for producing polymer, method for producing curable composition, method for producing cured product, and method for producing contact lens using curable composition

Abstract

A method for producing a high-purity polymer (A); and a method for producing a silicone hydrogel lens at a low cost are provided. A method for producing a polymer (A) includes: (step 1) a step of obtaining a polymer (A1) by polymerizing a first monomer (a) that has one ethylenically unsaturated group; (step 2) a step of obtaining a polymer (A2) by having the polymer (A1) react with a second monomer that has an ethylenically unsaturated group; and (step 3) a step of obtaining a polymer (A) by purifying the polymer (A2) with use of a subcritical or supercritical fluid. The first monomer is selected from one of the first group consisting of hydroxyl group-containing monomers, and the second group consisting of isocyanate compounds of (meth)acrylic acids, anhydrides of (meth)acrylic acids, and halides of (meth)acrylic acids. The second monomer is selected from the other of the first and second group.

Dependencies are inferred from the claim text.