Novel phenolic antioxidants, their preparation and their use

Details Novel phenolic antioxidants, their preparation and their use Novel phenolic antioxidants, their preparation and their use

1977-03-17

1978-06-06

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

560 57, C07C 6976, C08K 900

Patent

active

040935922

ABSTRACT:
2,2-BIS-(ALKYL-4'-HYDROXYPHENYL)-CYCLOALKYL-(ALKYL) CARBONIC ACID ESTERS ARE PREPARED BY CONDENSATION OF ALKYL PHENOLS WITH 2-KETO-CYCLOALKYL CARBONIC ACID ESTERS IN THE PRESENCE OF ACIDIC CATALYSTS AND OPTIONALLY OF MERCAPTO DERIVATIVES. The product are useful for the stabilization of polymers against the decomposition by light and heat.

REFERENCES:
patent: 3631148 (1971-12-01), Krueger
patent: 3996194 (1976-12-01), Gencarelli et al.
Journal of A.C.S., vol. LXVI, Jul.-Dec., 1944, pp. 1768 to 1770.
Journal of A.C.S., vol. LXVII, Jan. 8, 1945, pp. 233 to 237.
Berichte, 1936, pp. 1494 to 1499.

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