Stabilized rubber or lubricant compositions containing mercaptoa

Details Stabilized rubber or lubricant compositions containing mercaptoa Stabilized rubber or lubricant compositions containing mercaptoa

1983-11-03

1985-07-30

Henderson, Christopher A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

252 45, 525150, C08K 537

Patent

active

045322864

ABSTRACT:
Compounds of formula I ##STR1## where R.sub.1 and R.sub.2 independently are alpha-branched alkyl of 3 to 8 carbon atoms, R.sub.3 is hydrogen, R.sub.4 is ethylene, 1,3-propylene or 1,4-butylene, and n is 2 or 4 are effective stabilizers for protecting elastomeric or acrylonitrile copolymer compositions or lubricating oil compositions against thermal oxidation and discoloration. 2-Mercaptoethyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate is particularly useful.

REFERENCES:
patent: 3285855 (1966-11-01), Dexter
patent: 4020042 (1977-04-01), Cottman

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