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    Stabilization of synthetic polymers
    1.
    发明授权
    Stabilization of synthetic polymers 失效
    合成聚合物的稳定化

    公开(公告)号：US3886115A

    公开(公告)日：1975-05-27

    申请号：US47418974

    申请日：1974-05-29

    申请人： SANKYO CO

    发明人： MURAYAMA KEISUKE ,  MORIMURA SYOJI ,  YOSHIOKA TAKAO ,  HORIUCHI HIDEO ,  MATSUI KATSUAKI ,  KURUMADA TOMOYUKI ,  OHTA NORIYUKI ,  OHSAWA HISAYOU

    IPC分类号： C08K5/17 ,  C08F45/60 ,  C08G51/60

    CPC分类号： C08K5/17

    摘要： Synthetic polymer compositions stabilized against photo- and thermal-deteriorations wherein there is incorporated, in a sufficient amount to prevent such deteriorations, at least one of the secondary amine derivatives having the formula

    WHEREIN R1 and R2 may be the same or different and each represents a group capable of being derived from carboxylic acid and m and n individually are an integer of 4 or 5 and the metal salts thereof, said secondary amine derivatives being known per se.

    摘要翻译： 合成的聚合物组合物抗光和热劣化稳定，其中以足够的量掺入以防止这种劣化，具有式WHEREIN R1和R2的仲胺衍生物中的至少一种可以相同或不同，并且各自表示 能够衍生自羧酸的基团，m和n分别为4或5的整数，其金属盐，所述仲胺衍生物本身是已知的。

    Stabilization of synthetic polymers with imidazolidine compounds
    2.
    发明授权
    Stabilization of synthetic polymers with imidazolidine compounds 失效
    合成聚合物与咪唑啉化合物的稳定性

    公开(公告)号：US3645965A

    公开(公告)日：1972-02-29

    申请号：US3645965D

    申请日：1968-10-17

    申请人： SANKYO CO

    发明人： MURAYAMA KEISUKE ,  TODA TOSHIMASA ,  KURUMADA TOMOYUKI ,  WATANABE ICHIRO ,  MORIMURA SYOJI ,  AKAGI SABURO

    IPC分类号： C07D235/02 ,  C07D471/10 ,  C08K5/3445 ,  C08F45/60 ,  C08G51/60

    CPC分类号： C07D235/02 ,  C07D471/10 ,  C08K5/3445

    摘要： SYNTHETIC POLYMERS SUCH AS HOMOPOLYMERS OF OLEFINS, COPOLYMERS OF OLEFINES WITH OTHER ETHYLENICALLY UNSATURATED MONOMERS, POLYURETHANES, POLYAMIDES, POLYACETALS, POLYESTERS, POLYMERIZED VINYL MONOMERS AND THE LIKE ARE STABILIZED AGAINST PHOTO- AND THERMAL-DETERIORATIONS THEREOF BY HAVING INCORPORATED THEREIN AN EFFECTIVE AMOUNT OF ONE OF THE 2,5-TRI- OR TETRASUBSTITUTED-4-OXO (OR THRIOXO)-IMIDAZOLIDINES. AMONG THESE IMIDAZOLIDINES, SOME OF THE 2,5TRI- OR TETRAUBSTITUTED-4-OXO-IMIDAZOLIDINES ARE NOVEL SUBSTANCES AND OTHER IMIDAZOLIDINES AS SUCH ARE DISCLOSED IN THE PRIOR ART. THESE NOVEL AND OLD 2,5-TRI- OR TETRASUBSTITUTED-4-OXO-IMIDZOLIDINES ARE PREPARED BY A NOVEL PROCESS WHICH COMPRISES (1) REACTING THE CORRESPONDING A-AMINONITRILE WITH AN APPROPRIATE KETONE OR ALDEHYDE IN THE PRESENCE OF A BASIC CATALYST OR (2) REACTING THE CORRESPONDING A-AMINONITRILE WITH AN APPROPRIATE KETONE OR ALDEHYDE AND THEN SUBJECTING THE INTERMEDIATE. SCHIFF BASE TO THE ACTION OF A BASIC CATALYST.