Invention Grant
- Patent Title: Polymer compositions for contact lenses
- Patent Title (中): 隐形眼镜的聚合物组合物
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Application No.: US984169Application Date: 1992-12-02
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Publication No.: US5298533APublication Date: 1994-03-29
- Inventor: Mahendra P. Nandu , Jay F. Kunzler
- Applicant: Mahendra P. Nandu , Jay F. Kunzler
- Applicant Address: NY Rochester
- Assignee: Bausch & Lomb Incorporated
- Current Assignee: Bausch & Lomb Incorporated
- Current Assignee Address: NY Rochester
- Main IPC: C08F220/28
- IPC: C08F220/28 ; C08F220/54 ; G02B1/04 ; C08F220/26
Abstract:
Copolymers useful as a contact lens material are prepared from a mixture comprising:(a) an N,N-dialkyl(meth)acrylamide monomer; and(b) a monomer represented by the formula: ##STR1## wherein: R.sup.1 is methyl or hydrogen;R.sup.2 is --O-- or --NH--;R.sup.3 and R.sup.4 are independently a divalent radical selected from the group consisting of --CH.sub.2 --, --CHOH-- and --CHR.sup.6 --;R.sup.5 and R.sup.6 are independently a branched C.sub.3 -C.sub.8 alkyl group; andn is an integer of at least 1, and m and p are independently 0 or an integer of at least 1, provided that the sum of m, p and n is 2, 3, 4 or 5.
Information query
IPC分类:
