2-Hydroxybenzophenone derivatives

Details 2-Hydroxybenzophenone derivatives 2-Hydroxybenzophenone derivatives

1975-05-16

1977-06-14

Killos, Paul J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 4585B, 260 4575R, 260 4575C, 260 4575N, 260 4575F, 260 4575V, 260 4575W, 260 459R, 260 4595F, 260429R, 2604295, 2604299, 260435R, 2604381, 260465F, 260469, 260517, C07C 6988, C07F 724, C07F 104, C07F 1504

Patent

active

040296849

ABSTRACT:
The present invention concerns novel 2-hydroxybenzophenone derivatives and metal complexes thereof of the formula: ##STR1## wherein Z.sub.1, Z.sub.2, Y.sub.1 and Y.sub.2 are each, independently, hydrogen or a substituent, at least one of Y.sub.1 and Y.sub.2 being a group ##STR2## wherein, R.sub.1 is alkyl R.sub.2 is hydrogen or a substituent and
A is oxygen, sulphur or ##STR3## The compounds are useful for stabilizing organic material, e.g. plastics, against degradation under the influence of U.V. radiation.

REFERENCES:
patent: 2898323 (1959-08-01), Clark
patent: 3072602 (1963-01-01), Clark et al.
patent: 3206431 (1965-09-01), Doyle et al.

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