Optical device

Details Optical device Optical device

1990-11-20

1992-08-04

Ziegler, Jacob

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

359642, 359831, 428 64, 428913, 525391, 525905, B32B 302, C08L 7112

Patent

active

051357917

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.

REFERENCES:
patent: 3306875 (1967-02-01), Hay
patent: 3356761 (1967-12-01), Fox
patent: 3383435 (1968-05-01), Cizek
patent: 3384682 (1968-05-01), Erchak
patent: 4373065 (1983-02-01), Prest
patent: 4390579 (1983-06-01), Dalta et al.
patent: 4610912 (1986-09-01), Takahashi et al.

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