Substituted birefringent polyamide

Details Substituted birefringent polyamide Substituted birefringent polyamide

1983-04-20

1984-07-24

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

526242, 526247, 526248, 526296, 526312, 528205, 528208, 528210, 528321, C08G 6912

Patent

active

044618867

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.

REFERENCES:
patent: 3575933 (1971-04-01), Hoegger et al.
patent: 3600350 (1971-08-01), Kwolek
patent: 3671542 (1972-06-01), Kwolek
patent: 3753957 (1973-08-01), Jones
patent: 3869429 (1975-03-01), Blades

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