Novel vinyl carbonate and vinyl carbamate contact lens material monomers
申请人:BAUSCH & LOMB INCORPORATED
公开号:EP0396364A2
公开(公告)日:1990-11-07
Novel monomers of the general formula
where b is 0 or 1, a is 1, 2, 3 or 4, R2 is a monovalent alkyl radical and R is an organic radical. The novel monomers may be employed to produce novel copolymers useful as hydrogel, soft non-hydrogel and/or rigid gas permeable contact lens materials.