基于二苯甲烷-4，4’-二异氰酸酯和二环己基甲烷-4，4’-二异氰酸酯的新型复合受阻酚胺类聚合物稳定剂

New combined phenol - hindered amine stabilizers for polymers based on diphenylmethane - 4,4＇ - diisocyanate and dicyclohexylmethane - 4,4＇ - diisocyanate

由空间位阻酚和空间位阻胺（HAS）合成的新的高分子量复合聚合物光稳定剂。不同酚和不同HAS的偶联通过和二苯基甲烷-4，4’-二异氰酸酯（MDI）和二环己基甲烷-4，4’-二异氰酸酯（CDI）反应来实现。2，2，6，6-四甲基-4-哌啶醇（TMP）、1，2，2，6，6-五甲基-4-哌啶醇（PMP）、4-氨基-2，2，6，6-四甲基哌啶（ATP）和4-N-丁氨基-2，2，6，6-四甲基哌啶（BATP）用作起始HAS。主要是两个酚2，6-二叔丁基酚（Phi）和2，6-二叔丁基-4-甲基苯酚（PhIV）和HAS组合。为了检验酚和HAS在同一分子内组合的好处，还合成了用CDI为连接剂的对称HAS—HAS和酚-酚稳定剂。光稳定效应在PP薄膜中试验。二环己基甲烷-4，4’-二异氰酸酯制备的复合酚-HAS添加剂比二苯基甲烷-4，4’-二异氰酸酯的类似衍生物有效得多。和起始酚与HAS的物理状态混合物比较，酚和HAS在组合分子中的偶合增加了它们的效率。

New higher molecular weight combined photo - stabilizers for polymers were synthesized, based on sterieally hindered phenols and sterically hindered amines （HAS）. The coupling of different phenols as well as different HAS was done by reaction with diphenylmethane - 4,4＇ - diisocyanate （ MDI ） and dicyclohexylmethane - 4,4＇ - diisocyanate （ CDI ）. 2, 2,6,6 - Tetramethyl - 4 - piperidinol（TMP）, 1,2,2,6,6 - penta - methyl - 4 - piperidinol（PMP） ,4 - amino - 2,2,6,6 - tetramethylpiperidine（ATP） and 4 - N - butylamino - 2,2,6,6 - tetramethylpiperidine（BATP） were used as starting HAS. Two phenols 2,6 - di - tert - butylphenol （Phi） and 2,6- di- tert- butyl- 4- methylphenol（ PhIV）were mainly combined with HAS. To check the advantage of the combination of phenol and HAS in one molecule the symmetrical HAS - HAS as well as phenol - phenol stabilizers using CDI as a linker were also synthesized. Photo - stabilizing effects have been investigated in PP films. Combined phenol - HAS additives prepared from dicyclohexylmethane - 4, 4＇ - diisocyanate were much more efficient than the similar derivatives of diphenylmethane - 4,4＇ - diisocyanate. Binding of phenol and HAS in combined molecules increased their efficiency in comparison with the efficiency of the physical mixture of starting phenol and HAS.