申请人:Ciba-Geigy Corporation
公开号:US04668727A1
公开(公告)日:1987-05-26
Ester substituted benzylhydroxylamine derivatives are effective in stabilizing polyolefin compositions containing a stabilizer or mixture of stabilizers selected from the group consisting of the phenolic antioxidants, the hindered amine light stabilizers, the alkylated hydroxybenzoate light stabilizers, the ultraviolet light absorbers, the organic phosphorus compounds, the alkaline metal salts of fatty acids and the thiosynergists, against degradation upon high temperature extrusion, exposure to the combustion products of natural gas, gamma irradiation or upon storage for extended periods. These ester substituted benzylhydroxylamine derivatives exhibit resistance to loss or extraction during processing and in end-use applications.
Ester替代苄羟胺衍生物在稳定聚烯烃组合物方面具有有效性,该组合物包含从苯酚抗氧化剂、受阻胺光稳定剂、烷基羟基苯甲酸酯光稳定剂、紫外线吸收剂、有机磷化合物、脂肪酸碱性金属盐和硫协同剂中选择的稳定剂或混合物,以防止在高温挤出、暴露于天然气燃烧产物、γ辐射或长时间存储时的降解。这些酯替代的苄羟胺衍生物在加工过程和最终应用中表现出对损失或提取的抵抗力。