Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1981-03-02
1983-05-17
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528185, 528187, 528191, 528192, 528205, 528208, 528331, 528345, 528348, 528363, 528493, 528499, 528502, 528336, 264 13, 2642893, 26433119, C08G 6926
Patent
active
043841074
ABSTRACT:
A class of polyamides comprising recurring units having certain substituted-biphenylene or substituted-stilbene radicals is disclosed. The substituted radicals include substituents so as to confer a non-coplanar molecular configuration and a substantially cylindrical distribution of electron density about the long axis of the recurring units and the chain-extended polymers including such radicals.
Molecularly oriented polymers of the invention exhibit optically uniaxial properties. The highly birefringent polymers are suited to application in optical filter and other devices where a refractive and birefringent material is desired.
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Gaudiana Russell A.
Manello Jeannette S.
Rogers Howard G.
Sahatjian Ronald A.
Anderson Harold D.
Polaroid Corporation
Xiarhos Louis G.
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