发明名称 |
POLYMER BLEND COMPOSITION SUITABLE AS OPTICAL MATERIAL |
摘要 |
A polymer blend of 2-80 wt % of an acrylic or methacrylic ester base polymer and the balance of a ternary copolymer of vinylidene fluoride (VDF), hexafluoroacetone (HFA) and tetrafluoroethylene (TFE) is very high in transparency and serves as a thermoplastic resin useful for optical purposes. The first polymer of the blend can be selected from homopolymers and copolymers of C1-C4 alkyl acrylates and methacrylates. The second polymer is preferably made up of 2-15 mol % of HFA, 5-60 mol % of TFE and the balance of VDF. The polymer blend has a relatively low index of refraction, which can be controlled by selecting the first and second polymers and/or by varying the blending ratio. The polymer blend is soluble in various organic solvents. Besides, the polymer blend serves as a thermochromic material that becomes opaque by heating and resumes transparency by cooling. |
申请公布号 |
GB2199583(B) |
申请公布日期 |
1990.07.04 |
申请号 |
GB19870029757 |
申请日期 |
1987.12.21 |
申请人 |
* CENTRAL GLASS COMPANY LIMITED |
发明人 |
KAZUHIKO * MAEDA;TAKU * YAMAUCHI;TOSHIO * KOISHI |
分类号 |
C08L27/16;C08L27/12;C08L27/14;C08L27/18;C08L33/00;C08L33/04;C08L33/06 |
主分类号 |
C08L27/16 |
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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