This document describes a procedure for the determination of the following antidegradants in vulcanized rubbers:
—?aminoketone group;
—?naphthylamine group;
—?diphenylamine group;
—?p-phenylenediamine;
—?monophenol group.
The groups of antidegradants are summarized in Table?A.1 with the chemical names, the abbreviated terms and the CAS registry numbers.
Extender oils, when present, can interfere.
For poly-2,2,4-trimethyl-1,2-dihydroquinoline, the method provides only an approximation because of its polymeric nature.