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51.发明授权
公开(公告)号：US5690953A
公开(公告)日：1997-11-25
申请号：US712657
申请日：1996-09-13
IPC分类号： A61F9/00 , A61L27/00 , C08F290/06 , C08F291/06 , C08G18/32 , C08G65/32 , C08G83/00 , C08L101/00 , G02B1/04 , C08B37/00
CPC分类号： G02B1/043 , C08F290/062
摘要： An ophthalmic lens, particularly a soft hydrogel contact lens, is disclosed. The lens can be derived from a crosslinked polymer made by reacting a hydrophilic monomer with a crosslinking amount of a polyfunctional compound containing a saccharide residue. The preferred hydrophilic monomer is actually a mixture of the following individual hydrophilic monomers: a) the reaction product of a free radical reactive monoisocyanate and a monoalkoxy polyalkylether, b) N,N-dimethylacrylamide, and optionally c)hydroxyethyl methacrylate. The preferred polyfunctional compound is a prepolymer derived from an alkoxylated glucose or sucrose. This prepolymer can be made by reacting glucose or sucrose, which has been ethoxylated or propoxylated, with a free radical reactive isocyanate which has been capped. The free radical reactive isocyanate can be capped by reacting it with a polyalkylether, such as polyethylene glycol, and then reacting this intermediate with a diisocyanate.
摘要翻译： 公开了一种眼用透镜，特别是软水凝胶隐形眼镜。 透镜可以衍生自通过使亲水性单体与交联量的含有糖残基的多官能化合物反应制备的交联聚合物。 优选的亲水性单体实际上是以下各个亲水单体的混合物：a）自由基反应性单异氰酸酯和单烷氧基聚烷基醚的反应产物，b）N，N-二甲基丙烯酰胺和任选的c）甲基丙烯酸羟乙酯。 优选的多官能化合物是衍生自烷氧基化葡萄糖或蔗糖的预聚物。 该预聚物可以通过已经被乙氧基化或丙氧基化的葡萄糖或蔗糖与被封端的自由基活性异氰酸酯反应来制备。 自由基反应性异氰酸酯可以通过与聚烷基醚如聚乙二醇反应来封端，然后使该中间体与二异氰酸酯反应。
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52.发明授权Method of forming shaped hydrogel articles including contact lenses using inert, displaceable diluents 失效形成水凝胶制品的方法，包括使用惰性可置换稀释剂的隐形眼镜
公开(公告)号：US5457140A
公开(公告)日：1995-10-10
申请号：US96145
申请日：1993-07-22
IPC分类号： C08J5/00 , B29D11/02 , C08F2/00 , C08F2/44 , C08F2/48 , C08L71/02 , G02B1/04 , C08F24/00 , G02C7/04
CPC分类号： G02B1/043 , C08F2/00 , Y10S524/916
摘要： Shaped hydrogel articles such as soft contact lenses are prepared by the steps of:(1) molding or casting a polymerization mixture comprising:(a) a monomer mixture comprising a major proportion of one or more hydrophilic monomers such as 2-hydroxyethyl methacrylate, and one or more cross-linking monomers; and(b) an inert, displaceable diluent selected from the group consisting of:(i) ethoxylated alkyl glucoside;(ii) ethoxylated bisphenol A;(iii) polyethylene glycol;(iv) mixture of propoxylated and ethoxylated alkyl glucoside;(v) single phase mixture of ethoxylated or propoxylated alkyl glucoside and C.sub.2-12 dihydric alcohol;(vi) adduct of .epsilon.-caprolactone and C.sub.2-6 alkanediols and triols;(vii) ethoxylated C.sub.3-6 alkanetriol; and(viii) mixtures of one or more of (i) through (vii), under conditions to polymerize said monomer mixture to produce a shaped gel of a copolymer of said monomers and said diluent; and(2) thereafter replacing said diluent with water.
摘要翻译： 形成的水凝胶制品如软性隐形眼镜是通过以下步骤制备的：（1）模制或浇铸聚合混合物，其包含：（a）包含主要比例的一种或多种亲水性单体如甲基丙烯酸2-羟乙酯和 一种或多种交联单体; 和（b）惰性的可置换的稀释剂，其选自：（i）乙氧基化烷基葡糖苷; （ii）乙氧基化双酚A; （iii）聚乙二醇; （iv）丙氧基化和乙氧基化烷基葡糖苷的混合物; （v）乙氧基化或丙氧基化烷基葡糖苷和C2-12二元醇的单相混合物; （vi）ε-己内酯和C 2-6链烷二醇和三醇的加合物; （vii）乙氧基化C3-6烷三醇; 和（viii）（i）至（vii）中的一种或多种的混合物，在使所述单体混合物聚合以产生所述单体和所述稀释剂的共聚物的成型凝胶的条件下; 和（2）此后用水代替所述稀释剂。
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公开(公告)号：US5297460A
公开(公告)日：1994-03-29
申请号：US989379
申请日：1992-12-11
申请人： Kenneth E. Hartman , James D. Ford
发明人： Kenneth E. Hartman , James D. Ford
CPC分类号： B23B5/02 , B23Q11/0032 , B23Q11/08 , Y10T82/21 , Y10T82/2572 , Y10T82/2595
摘要： A device for dampening the vibration of a rotating disc during the machining of the faces thereof has a spring member having a wide base portion and two arms extending from the ends of the base. At the face end of each arm is a pad mounted to pivot about an axis perpendicular to the axis of the arm. A dampening device in accordance with this invention has eye shields without requiring that the eye shield be removed.
摘要翻译： 用于在加工其表面时抑制旋转盘的振动的装置具有弹簧构件，该弹簧构件具有宽的基部和从基部的端部延伸的两个臂。 在每个臂的表面端是安装成围绕垂直于臂的轴线的轴线枢转的垫。 根据本发明的阻尼装置具有眼罩，而不需要去除眼罩。
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