Aminomethylene derivatives and ultraviolet absorbent comprising thereof
    2.
    发明授权
    Aminomethylene derivatives and ultraviolet absorbent comprising thereof 失效
    氨基亚甲基衍生物和包含它们的紫外线吸收剂

    公开(公告)号:US6114546A

    公开(公告)日:2000-09-05

    申请号:US269401

    申请日:1999-03-26

    摘要: The present invention provides an aminomethylene derivative represented by general formula (I): ##STR1## wherein A is a cyclic oxo group selected from the group consisting of following general formulae (a), (b), (c), (d) and (e): ##STR2## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 each independently represent H, an alkyl group or the like; R.sup.6, R.sup.7 and R.sup.8 each independently represent an alkyl group or the like; R.sup.1 and R.sup.2 or R.sup.7 and R.sup.8 may combine with each other to form a tetramethylene group or the like; R represents an alkyl group optionally containing OH or O; and n is an integer of 0 to 4, a process for the same, and the use thereof. The derivatives have an excellent ultraviolet absorption ability and a high optical stability.

    摘要翻译: PCT No.PCT / JP97 / 03536 Sec。 371日期1999年3月26日 102(e)1999年3月26日PCT PCT 1997年10月3日PCT公布。 出版物WO98 / 14423 日本时间1998年4月6日本发明提供由通式(I)表示的氨基亚甲基衍生物:其中A是选自以下通式(a),(b),(c),(d )和(e):其中R1,R2,R3,R4和R5各自独立地表示H,烷基等; R6,R7和R8各自独立地表示烷基等; R1和R2或R7和R8可以相互结合形成四亚甲基等; R表示任选含有OH或O的烷基; n为0〜4的整数,其使用方法及其用途。 该衍生物具有优良的紫外线吸收能力和高的光学稳定性。