Optical device having continuous and disperse phases
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United States of America Patent
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Nov 25, 2003
Grant Date -
N/A
app pub date -
Oct 11, 2000
filing date -
Oct 12, 1999
priority date (Note) -
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Abstract
An improved optical film having a continuous/disperse phase morphology and a method for making the same is provided. At least one of the continuous and disperse phases comprises a blend of homopolymers which are inter-reacted, as by transesterification. The resulting films exhibit a higher degree of birefringence for a given level of strain than analogous films in which the blend is replaced by a random copolymer.
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