发明名称 |
Polymeric blends for optical devices and method of manufacture thereof |
摘要 |
A method for manufacturing a film or sheet comprises deforming a polymeric alloy at a temperature effective to impart to the deformed alloy a birefringence retardation of greater than or equal to about 350 nanometers. A method of substantially eliminating comets and veins in an optical film or sheet comprises annealing the film or sheet comprising a polymeric alloy to a temperature proximate to a glass transition temperature of a polymeric resin contained in the alloy. A composition comprises a first polymeric resin in an amount of about 1 to about 99 wt %; and a second polymeric resin in an amount of about 1 to about 99 wt %, wherein the polymeric resins are treated with a deforming force or with an energy effective to produce a polymeric alloy having a birefringence retardation of greater than or equal to about 350 nanometers or with a birefringence retardation of less than or equal to about 150 nanometers.
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申请公布号 |
US2004220333(A1) |
申请公布日期 |
2004.11.04 |
申请号 |
US20040832850 |
申请日期 |
2004.04.27 |
申请人 |
TADROS SAFWAT;AGARWAL PARMINDER;CHAKRAVARTI SHREYAS;VOLLENBERG PETER |
发明人 |
TADROS SAFWAT;AGARWAL PARMINDER;CHAKRAVARTI SHREYAS;VOLLENBERG PETER |
分类号 |
B29C43/22;B29C67/24;B29C71/02;B32B27/06;C08L33/12;C08L67/02;C08L69/00;G02B5/30;(IPC1-7):C08L67/00 |
主分类号 |
B29C43/22 |
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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