发明授权
US4908398A Poly 1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylesters useful as
thermal stabilizers for synthetic polymers
失效
可用作合成聚合物的热稳定剂的聚1,4-二氢-2,6-二甲基吡啶-3,5-二羧酸酯
- 专利标题: Poly 1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylesters useful as thermal stabilizers for synthetic polymers
- 专利标题(中): 可用作合成聚合物的热稳定剂的聚1,4-二氢-2,6-二甲基吡啶-3,5-二羧酸酯
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申请号: US174864申请日: 1988-03-29
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公开(公告)号: US4908398A公开(公告)日: 1990-03-13
- 发明人: Giuseppe Li Bassi , Roberto Ortica
- 申请人: Giuseppe Li Bassi , Roberto Ortica
- 申请人地址: ITX
- 专利权人: Lagor S.p.A.
- 当前专利权人: Lagor S.p.A.
- 当前专利权人地址: ITX
- 优先权: ITX20128A/87 19870415
- 主分类号: C07D211/90
- IPC分类号: C07D211/90 ; C08G63/19 ; C08G63/68 ; C08G63/685 ; C08K5/34 ; C08K5/3432 ; C08K5/3435 ; C08K5/36
摘要:
Poly-dihydro-2,6-dimethylpyridine-3,5-dicarboxylesters of general formula (I) ##STR1## in which A, B, m, n, k, j, R, R.sup.1 and R.sup.2 have the meanings defined in the text, useful as thermal stabilizers for synthetic polymers, in particular for polyvinylchloride-based masses.The compounds of formula (I) are preferably used in combination with the usual stabilizers based on organic metal derivatives. They can also be used combined with agents which exert a synergic action in maintaining a low color of manufactured articles subjected to heating, and in particular with betadicarbonyl compounds of formula (II):R.sup.3 --CO--CH.sub.2 --CO--R.sup.4 (II)in which R.sup.3 and R.sup.4 have the meanings defined in the text, in masses containing organic calcium and zinc salts as basic stabilizers.
公开/授权文献
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