2,4-Dihydroxy-4-pentadecyl benzophenone and compositions contain

Details 2,4-Dihydroxy-4-pentadecyl benzophenone and compositions contain 2,4-Dihydroxy-4-pentadecyl benzophenone and compositions contain

1975-11-17

1977-05-17

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260591, 106187, C07C 4982, C08K 513

Patent

active

040241068

ABSTRACT:
2,4'-Dihydroxy-4-pentadecyl benzophenone is prepared by mixing in the presence of an acid catalyst equimolar amounts of meta pentadecyl phenol and parahydroxy benzoic acid. Thermoplastic resins, normally susceptible to degradation upon prolonged exposure to ultraviolet light, become resistant to such degradation when a small amount of 2,4'-dihydroxy-4-pentadecyl benzophenone is blended therein.

REFERENCES:
patent: 2999843 (1961-09-01), Porck
patent: 3033814 (1962-05-01), Tholstrup
patent: 3043797 (1962-07-01), Addleburg et al.
Photodegradation, Photooxidation and Photostabilization of Polymers - Ranby et al., Sept. 1975; pp. 369 to 374.

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