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    • 9. 发明授权
    • Crosslinked polymers
    • 交联聚合物
    • US5932674A
    • 1999-08-03
    • US875535
    • 1997-07-30
    • Beat Muller
    • Beat Muller
    • G02C7/04B29D11/00C07C233/18C07C233/20C07C237/22C07C323/52C07D207/27C07D207/452C07D521/00C08F8/00C08F216/38C08F299/00C08G18/81C08J3/24G02B1/04C08F234/02C08F220/58
    • G02B1/043C08F8/00C08F8/28C08F8/30C08F2810/20C08F2810/30
    • The invention relates to a novel process for the production of mouldings, in particular contact lenses, in which a soluble prepolymer comprising units containing a crosslinkable group and at least one unit containing a modifier is crosslinked in solution, and to mouldings, in particular contact lenses, obtainable by this process. The present invention likewise relates to novel prepolymers which can be employed in the novel process, in particular derivatives of a polyvinyl alcohol having a molecular weight of at least about 2000 which comprises from about 0.5 to about 80%, based on the number of hydroxyl groups in the polyvinyl alcohol, of units of the formulae I and II, II and III or I, II and III, as disclosed in detail in the description, and to crosslinked polymers, either homopolymers or copolymers, made from these novel prepolymers, a process for the preparation of the novel prepolymers and the homopolymers and copolymers obtainable therefrom, to mouldings made from said homopolymers or copolymers, in particular contact lenses made from these homopolymers or copolymers, and to a process for the production of contact lenses using said homopolymers or copolymers.
    • PCT No.PCT / EP96 / 00245 Sec。 371日期1997年7月30日 102(e)日期1997年7月30日PCT 1996年1月22日PCT PCT。 出版物WO96 / 24074 日期1996年8月8日本发明涉及一种用于生产模制品,特别是隐形眼镜的新型方法,其中包含含有可交联基团的单元的可溶性预聚物和至少一种含有改性剂的单元在溶液中交联, ,特别是可通过该方法获得的隐形眼镜。 本发明同样涉及可用于新方法中的新型预聚物,特别是分子量至少为约2000的聚乙烯醇的衍生物,其包含基于羟基数的约0.5至约80% 在聚乙烯醇中,如说明书中详细公开的式I和II,II和III或I,II和III的单元,以及由这些新型预聚物制成的交联聚合物,均聚物或共聚物, 用于制备新型预聚物及其可获得的均聚物和共聚物,由所述均聚物或共聚物制成的模制品,特别是由这些均聚物或共聚物制成的隐形眼镜,以及使用所述均聚物或共聚物制备隐形眼镜的方法 。