Patent ID: 8101679
Filing Date: 2012-01-24
Classification: C08K

Abstract:
1. An improved method for the preparation of rubber compounds which comprises compounding rubber, epoxidised soybean oil and 2,2,6,6-tetramethylpiperidine-1-oxy at 125-200° C. in the presence of an amount of 0.1-2%, based on the weight of the rubber, of a processing stabilizer of the formula I wherein R R R C R R R R n is 1 or 2, where the weight ratio of the stabilizer of formula I to the epoxidised soybean oil is from 99.5:0.5 to 10:90 and where the weight ratio of the stabilizer of formula I to 2,2,6,6-tetramethylpiperidine-1-oxyl is from 2:1 to 1:2.