Stabilizer thiirane derivatives containing hindered phenol group

Details Stabilizer thiirane derivatives containing hindered phenol group Stabilizer thiirane derivatives containing hindered phenol group

1986-08-18

1989-01-10

Rotman, Alan L.

Compositions

Electrolytes for electrical devices

549 90, 208 18, 208 19, 252 486, 252404, 252406, C10M10508, C09K 1508, C09K 1510, C07D32702

Patent

active

047972181

ABSTRACT:
Compounds of the formula I ##STR1## in which R.sub.1 and R.sub.2, independently, denote alkyl with 1 to 6 carbon atoms, cycloalkyl with 5 to 8 carbon atoms, allyl, methallyl, aralkyl with 5 to 9 carbon atoms, phenyl, 1- or 2-naphthyl, or alkaryl with 7 to 9 carbon atoms, R.sub.2 moreover also denotes hydrogen, R.sub.3 denotes hydrogen, alkyl with 1 to 6 carbon atoms, unsubstituted phenyl or phenyl substituted by one or two chlorine atoms and/or one or two methyl groups, B denotes a hetero atom, the group --OC(O)--, --OC(O)--CH.sub.2 CH.sub.2 -- or a direct bond, m is an integer from 0 to 6, and n is an integer from 1 to 6, are prepared by reaction of a thioglycerol derivative with a carboxylic acid containing the hindered phenol moiety in the presence of an acid and are used as antioxidants and thermal stabilizers for lubricating oils, plastics, resins and other organic substrates.

REFERENCES:
patent: 3992420 (1976-11-01), Lind et al.

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