Optical brighteners

Details Optical brighteners Optical brighteners

1974-09-27

1976-06-08

Demers, Arthur P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2602409, 25230124, C07D41702, C07D27764

Patent

active

039622193

ABSTRACT:
Compounds of the formula ##SPC1##
Wherein R.sub.1 and R.sub.2 denote hydrogen, halogen, nitrile, alkoxy, alkyl, aryl, cycloalkyl, aralkyl, carboxyl or carboxylic acid ester groups are suitable for the optical brightening of synthetic organic high molecular materials.

REFERENCES:
patent: 3427307 (1969-02-01), Schinzel et al.
patent: 3597364 (1971-08-01), Okubo et al.
patent: 3674781 (1972-07-01), Schinzel et al.
Postovskii, Chem. Abstracts, 58(1963), col. 9049-9050.
Beilstein, vol. 27EII, (1955), p. 883.

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