Light protection agents

Details Light protection agents Light protection agents

1975-10-10

1978-11-28

Coughlan, Jr., Paul M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 458NT, C07D24920

Patent

active

041275861

ABSTRACT:
New 2-(2'-hydroxyphenyl)-benzotriazoles are used for protecting light-sensitive organic materials. They are prepared by diazotization of a 2-nitroaniline, coupling of the resulting diazo compound with a phenol and reduction of the resulting 2-nitroazo compound.

REFERENCES:
patent: 3823112 (1974-07-01), Ponder
Sowdey, Chem. Abstracts, vol. 62, col. 4822c (1965).
Geigy III, Chem. Abstracts, vol. 64, col. 14364-14365 (1966).
Geigy IV, Chem. Abstracts, vol. 63, col. 13506b (1965).

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