申请人:Sankyo Company Limited
公开号:US04118368A1
公开(公告)日:1978-10-03
Novel derivatives of 4-amino-2,6-dimethylpiperidine have additional methyl or substituted-methyl substituents at positions 2 and 6, and a carboxylate ester substituent at position 4. Positions 1 and 3, and the amino group at position 4, can optionally also be substituted. These derivatives are useful for stabilizing synthetic polymers, especially polyolefins, polyamides and polyurethanes, against photo- and thermal-deterioration, generally in an amount of 0.01 - 5.0% by weight based on the polymer.
4-氨基-2,6-二甲基哌啶的新型衍生物在2和6位置上具有额外的甲基或取代甲基取代基,并在4位置上具有羧酸酯取代基。位置1和3以及4位置的氨基基团也可以选择性地被取代。这些衍生物对于稳定合成聚合物,特别是聚烯烃、聚酰胺和聚氨酯,抵抗光和热恶化非常有用,通常按聚合物重量的0.01-5.0%的比例使用。