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    • 6. 发明申请
    • Dimensionally Stable Silicone Hydrogel Contact Lenses
    • 尺寸稳定的硅胶水凝胶隐形眼镜
    • US20120220743A1
    • 2012-08-30
    • US13404034
    • 2012-02-24
    • Charles A. FrancisYing ZhengYuan XuLi YaoArthur BackYe HongCharlie Chen
    • Charles A. FrancisYing ZhengYuan XuLi YaoArthur BackYe HongCharlie Chen
    • C08F230/08
    • C08F230/08C08F222/1006
    • Dimensionally stable silicone hydrogel contact lenses are described. The lenses are derived from a polymerizable composition including a first siloxane monomer represented by formula (1): wherein m of formula (1) represents one integer from 3 to 10, n of formula (1) represents one integer from 1 to 10, R1 of formula (1) is an alkyl group having from 1 to 4 carbon atoms, and each R2 of formula (1) is independently either a hydrogen atom or a methyl group; the lenses also include units derived from a second siloxane monomer represented by formula (2): wherein R1 of formula (2) is selected from either hydrogen atom or a methyl group; R2 of formula (2) is selected from either of hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms; m of formula (2) represents an integer of from 0 to 10; n of formula (2) represents an integer of from 4 to 100; a and b represent integers of 1 or more; a+b is equal to 20-500; b/(a+b) is equal to 0.01-0.22; the configuration of siloxane units includes a random configuration, the second siloxane monomer having a number average molecular weight of at least 3,000 daltons that is present in the polymerizable composition in an amount such that ratio of the first siloxane monomer to the second siloxane monomer is at least 2:1 based on unit parts by weight. Batches of silicone hydrogel contact lenses and methods of making silicone hydrogel contact lenses are also described.
    • 描述了尺寸稳定的硅酮水凝胶隐形眼镜。 透镜衍生自包含由式(1)表示的第一硅氧烷单体的可聚合组合物:其中式(1)的m表示3至10的一个整数,式(1)的n表示1至10的整数,R 1 式(1)的烷基是碳原子数为1〜4的烷基,式(1)的各R 2独立地为氢原子或甲基。 透镜还包括衍生自由式(2)表示的第二硅氧烷单体的单元:其中式(2)的R 1选自氢原子或甲基; 式(2)的R2选自氢原子或碳原子数为1〜4的烃基; 式(2)的m表示0〜10的整数, 式(2)的n表示4〜100的整数, a和b表示1以上的整数; a + b等于20-500; b /(a + b)等于0.01-0.22; 硅氧烷单元的构型包括随机构型,第二硅氧烷单体的数均分子量为至少3,000道尔顿,其存在于可聚合组合物中,其量使得第一硅氧烷单体与第二硅氧烷单体的比率在 至少2:1,单位重量份。 还描述了硅胶水凝胶隐形眼镜的批次和制造硅酮水凝胶隐形眼镜的方法。