发明名称 |
OXYGEN-PERMEABLE MOLDING AND PROCESS FOR ITS PRODUCTION |
摘要 |
Oxygen-permeable moulding comprises a block copolymer of formula A-B, A-B-A, or B-A-B contg. 30-70 wt.% of segment B. Segments A and B show small microdomains in wavelengths of visible light. Also if VA and Pa stand resp. for vol. ratio and oxygen permeability coefft. of segment A and VB and PB the corresponding values for segment B, oxygen permeability of the moulding is 0.5-1 times VAPA+VBPB. Segment A comprises at least 80wt.% of alkyl methacrylate units with 1-4C alkyl, and B comprises at least 80wt.% units pref. from a monomer of formula CH2=C(CH3) COOCmH2mSiX3, M=2-5 X=indep. methyl or a gp. of formula (I9 n=0-30. |
申请公布号 |
EP0386249(A4) |
申请公布日期 |
1992.06.03 |
申请号 |
EP19890908261 |
申请日期 |
1989.07.07 |
申请人 |
MITSUBISHI RAYON CO., LTD. |
发明人 |
TONE, SEIJI;MORI, HIROSHI;YAMAMOTO, NAOKI;TAKEDA, HARUKO;SUGIMORI, MASAHIRO |
分类号 |
A61L27/18;C08F293/00;C08L53/00;C08L55/00;C09D153/00;G02B1/04;(IPC1-7):A61L27/00 |
主分类号 |
A61L27/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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