1,3-Bis-(carboxy-phenylamino)-s-triazines

Details 1,3-Bis-(carboxy-phenylamino)-s-triazines 1,3-Bis-(carboxy-phenylamino)-s-triazines

1975-06-16

1977-06-21

Ford, John M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

428426, 427163, C07D25170

Patent

active

040310922

ABSTRACT:
Cyanuric halide is successively reacted with two moles of carboxy substituted aromatic amine and one mole of quaternizing agent such as pyridine and dissolved, e.g., in dilute ammonium hydroxide. At certain concentrations as the solution evaporates, it becomes nematic. The solution is evaporated on an oriented substrate so that the residue is anisotropic and is finally frozen in a resinous form which shows birefringence. The substrate and coating is valuable as a fractional wave plate.

REFERENCES:
patent: 3116275 (1963-12-01), Gamlen et al.
patent: 3867383 (1975-02-01), Winter

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