A cost-effective antioxidant composition which exhibits good compatibility toward fluoroelastomers comprises a combination of (i) an oil soluble mixture of sterically-hindered tertiary alkylated monohydric phenols, (ii) an oil-soluble mixture of sterically-hindered tertiary alkylated methylene-bridged polyphenols, and (iii) at least one oil-soluble aromatic secondary amine. The proportions of (i), (ii) and (iii) are such that the weight percentage of nitrogen in component (iii) relative to the total weight of components (i), (ii) and (iii) is in the range of 0.05% to 1.5%, and the weight ratio of monohydric phenols:methylene-bridged polyphenols in the composition is in the range of 15:1 to 1:2.
一种具有成本效益的
抗氧化剂组合物对
氟橡胶具有良好的相容性,该组合物包括:(i) 立体受阻叔烷基化一
水酚的油溶性混合物;(ii) 立体受阻叔烷基化亚甲基桥联多
酚的油溶性混合物;(iii) 至少一种油溶性芳香族仲胺。(i)、(ii)和(iii)的比例为:组分(iii)中的氮相对于组分(i)、(ii)和(iii)总重量的重量百分比在 0.05%至 1.5%之间,组合物中一
水酚与亚甲基桥联多
酚的重量比在 15:1 至 1:2 之间。