The oxidative degradation of ethylene-propylene elastomers (EPDM and EPR) i
n the presence of some secondary amines was studied. The stabilization effi
ciency of these additives was assessed by oxygen uptake performed in air at
180 degrees C and normal pressure. The oxidation induction times and the o
xidation rates were obtained for polymer systems containing low amounts (0.
05 and 0.1 phr) of additive. Some considerations concerning the effects of
the chemical structure of the compounds added to EPDM and EPR on the therma
l stability of elastomers are presented. (C) 2000 Elsevier Science Ltd. All
rights reserved.