| 摘要 |
Solid rigid acrylic copolymer materials, useful for forming ophthalmic devices, are processed into the shape of an ophthalmic device, such as an intraocular lens and are then processed into a foldable form. The acrylic copolymer material has polymer units derived from an alphabeta-ethylenically unsaturated carboxylic acid monomer, such as, (meth)acrylic acid, 1-butenoic acid, and the like, and an aryl (meth)acrylate monomer, such as, phenyl (meth)acrylate, 2-ethyloxy(meth)acrylate, and the like. The processing into a foldable shape may be accomplished by contacting the rigid material, having a Tg of 25° C. or higher, with an alcohol, preferably in the presence of acid catalyst, to lower the Tg to 20° C. or less.
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