-
公开(公告)号：US3440173A
公开(公告)日：1969-04-22
申请号：US3440173D
申请日：1964-12-17
发明人： HOVEY RICHARD J , HOFFMAN DONALD O
CPC分类号： C09K11/06
-
公开(公告)号：US3390933A
公开(公告)日：1968-07-02
申请号：US41382364
申请日：1964-11-25
发明人： HOVEY RICHARD J , HOFFMAN DONALD O
IPC分类号： G02B5/23
CPC分类号： G02B5/23
-
公开(公告)号：US3193509A
公开(公告)日：1965-07-06
申请号：US9686461
申请日：1961-03-20
发明人： HOFFMAN DONALD O , HOVEY RICHARD J
CPC分类号： C08K5/0008 , G02B5/223
-
公开(公告)号：US3894129A
公开(公告)日：1975-07-08
申请号：US34161473
申请日：1973-03-15
发明人： HOFFMAN DONALD O , ZDROK EDWARD Z
IPC分类号： B29C33/00 , B29D11/00 , C08F271/02 , G02B1/04
CPC分类号： G02B1/043 , B29C33/0038 , B29D11/00038 , B29L2031/7602 , C08F271/02 , C08L51/003 , C08F220/26
摘要： A dispersion of a hydroxy methacrylate ester and a poly vinyl pyrrolidone (with low and medium temperature initiators) is cast in a shaping mold and is polymerized in the absence of oxygen by a low temperature thermal polymerization followed by a higher thermal post polymerization. The resultant material may be shaped into a contact lens form, and these lenses may then be equilibrated by hydrating in normal saline solution.
摘要翻译： 将羟基甲基丙烯酸酯和聚乙烯吡咯烷酮（具有低和中温引发剂）的分散体浇铸在成型模具中，并通过低温热聚合，然后在较高的热后聚合反应中在不存在氧的情况下聚合。 所得材料可以被成形为隐形眼镜形式，然后可以通过在生理盐水溶液中水合来平衡这些透镜。
-
公开(公告)号：US3698937A
公开(公告)日：1972-10-17
申请号：US3698937D
申请日：1971-02-16
发明人： HOFFMAN DONALD O
摘要： PADS OF FELT USED FOR POLISHING LENSES ARE THE LIKE ARE IMPREGNATED WITH AN ELASTOMERIC FIBER BONDING MATERIAL BY IMMERSION IN A SOLUTION OF A POLYURETHANE IN A CHEMICAL SOLVENT TO WHICH IS ADDED A GELLING INGREDIENT TO PROMOTE HOMOGENEOUS IMPREGNATION OF THE FELT BY THE POLYURETHANE. CONTROLLED PERIODS OF IMMERSION FOLLOWED
BY DRYING AND CURING CYCLES WHICH RESPECTIVELY REMOVE SOLVENTS AND CURE THE POLYURETHANE IN SITU COMPLETE THE PROCESS.
-
-
-
-
搜索结果
5 条记录 (耗时 0.016 秒)
