Purification of 2-aryl-2H-benzotriazoles

Details Purification of 2-aryl-2H-benzotriazoles Purification of 2-aryl-2H-benzotriazoles

1990-10-11

1992-03-17

Daus, Donald G

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548259, 548261, C07D24920

Patent

active

050970410

ABSTRACT:
There is disclosed a process in which a melt of a 2-aryl-2H-benzotriazole containing colored contaminants, or a solution thereof in an organic nonpolar solvent, is purified by treatment with a strongly acidic synthetic cationic exchange resin.

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