Optical device
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United States of America Patent
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Aug 4, 1992
Issued Date -
N/A
app pub date -
Nov 20, 1990
filing date -
Dec 6, 1985
priority date (Note) -
Expired
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Abstract
An optical device comprising a mixture of a polymer constituted mainly of aromatic vinyl monomer units and polyphenylene ether, characterized in that the average molecular weight of the polyphenylene ether is from 0.3 to 0.7 expressed in terms of the intrinsic viscosity measured in chloroform at 25.degree. C.
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