发明授权
US4532277A Hydrophilized cellulose esters, process for their preparation, their use
as biomedical materials and contact lenses produced from these
失效
亲水性纤维素酯，其制备方法，它们作为生物医学材料和由其制备的隐形眼镜
- 专利标题： Hydrophilized cellulose esters, process for their preparation, their use as biomedical materials and contact lenses produced from these
- 专利标题（中）： 亲水性纤维素酯，其制备方法，它们作为生物医学材料和由其制备的隐形眼镜
-
申请号： US565589申请日： 1983-12-27
-
公开(公告)号： US4532277A公开(公告)日： 1985-07-30
- 发明人: Frank Wingler
- 申请人： Frank Wingler
- 申请人地址： DEX Leverkusen
- 专利权人： Bayer Aktiengesellschaft
- 当前专利权人： Bayer Aktiengesellschaft
- 当前专利权人地址： DEX Leverkusen
- 优先权： DEX3300345 19830107
- 主分类号： C08L1/00
- IPC分类号： C08L1/00 ; C08F251/02 ; C08L1/10 ; C08L23/00 ; C08L33/00 ; C08L33/02 ; C08L101/00 ; G02C1/00 ; G02C7/04 ; A61F1/00 ; C08L23/08 ; C08L31/04
摘要：
Contact lenses and implants for human medicine can be fabricated from a polymer blend comprising 98-80% by weight of component A and 2-20% by weight of component B wherein:component A is a cellulose ester of an aliphatic carboxylic acid with up to 40% by weight of total component A of an ethylene/vinyl acetate copolymer having 30-98% by weight, relative to ethylene/vinyl acetate, of incorporated vinyl acetate andcomponent B is a homopolymer or copolymer of water-soluble vinyl monomers and up to 10% by weight relative to the total polymer B of multifunctional crosslinker vinyl compounds.
公开/授权文献
- US5774826A Optimization of survey coordinate transformations 公开/授权日：1998-06-30
信息查询
