Synergistic antioxidant mixtures

Details Synergistic antioxidant mixtures Synergistic antioxidant mixtures

1981-04-10

1982-12-07

Shippen, Michael L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560 15, 560 17, 560121, 560125, 252404, C07C14940, C07C14926, C07C14920

Patent

active

043628877

ABSTRACT:
Compounds of the formula: ##STR1## wherein R, R' and R.sup.2 are alkyl radicals having 1 to 20 carbon atoms, phenyl radicals which may be substituted by 1 or 2 alkyl groups having 1 to 8 carbon atoms, aralkyl radicals having 7 to 12 carbon atoms, or cycloalkyl radicals having 5 to 12 carbon atoms; and wherein R.sup.3 is hydrogen or an alkyl radical having from 1 to 4 carbon atoms. These compounds have utility as synergistic stabilizers with phenolic type antioxidants for the stabilization of organic materials such as natural and synthetic polymers, rubbers, lubricants and oils, etc.

REFERENCES:
patent: 2468725 (1949-05-01), Gresham
patent: 3637809 (1972-01-01), Kleiner
patent: 3789064 (1974-01-01), Hechenbleikner
patent: 3954839 (1976-05-01), Dexter
patent: 4080364 (1978-03-01), Kander
patent: 4226991 (1980-10-01), Nakahara
patent: 4301296 (1981-11-01), Kuczkowski
Reid, "Organic Chemistry of Bivalent Sulfur", vol. III, pp. 185, 186, 187, 193, 194 and 227-249, (1960).
Kuliev, Chem. Abst. 79:115348t, (1973).
Allinger, "Organic Chem.", pp. 528-530, (1971).

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