发明名称 |
ALS OPTISCHES MATERIAL GEEIGNETE POLYMERENMISCHUNG |
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 |
DE3743607(A1) |
申请公布日期 |
1988.07.07 |
申请号 |
DE19873743607 |
申请日期 |
1987.12.22 |
申请人 |
CENTRAL GLASS CO.,LTD. |
发明人 |
MAEDA,KAZUHIKO;YAMAUCHI,TAKU;KOISHI,TOSHIO |
分类号 |
C08L27/16;C08L27/12;C08L27/14;C08L27/18;C08L33/00;C08L33/04;C08L33/06;(IPC1-7):C08L33/06;C08J3/00;C08L33/12 |
主分类号 |
C08L27/16 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|