It has been found that a sulphur containing resin which is the condensation product of (i) one or more mercaptoaldehydes and (ii) one or more meta-substituted phenols has good antioxidant properties. Mixtures of m/p-alkylphenols are used to particular advantage in the production of this resin. A small amount of the resin retards the oxidation of rubbers or polyolefins and the resin is particularly useful as a melt stabilizer during the extrusion of a polymer.
已经发现一种含
硫树脂,它是(i)一种或多种巯基醛和(ii)一种或多种间位取代
酚的缩合产物,具有良好的抗氧化性能。m/p-烷基
酚的混合物在制备这种
树脂时特别有优势。少量的
树脂可以延缓橡胶或聚烯烃的氧化,而且在聚合物挤出过程中,该
树脂特别有用作为熔融稳定剂。