Merocyanine crystallization process

    公开(公告)号:US12157716B2

    公开(公告)日:2024-12-03

    申请号:US17259538

    申请日:2019-07-09

    Applicant: BASF SE

    Abstract: The present invention relates to a process for preparing a crystalline merocyanine compound, comprising the step of dissolving a merocyanine compound in an organic, polar solvent, wherein the process is performed at a pH below than 7 in the presence of an acid, wherein residual levels of colored impurities are eliminated.

    MEROCYANINE CRYSTALLIZATION PROCESS

    公开(公告)号:US20210323912A1

    公开(公告)日:2021-10-21

    申请号:US17259538

    申请日:2019-07-09

    Applicant: BASF SE

    Abstract: The present invention relates to a process for preparing a crystalline merocyanine compound, comprising the step of dissolving a merocyanine compound in an organic, polar solvent, wherein the process is performed at a pH below than 7 in the presence of an acid, wherein residual levels of colored impurities are eliminated.

    MEROCYANINE DERIVATIVES
    8.
    发明申请
    MEROCYANINE DERIVATIVES 有权
    月桂酰胺衍生物

    公开(公告)号:US20140150380A1

    公开(公告)日:2014-06-05

    申请号:US14232915

    申请日:2012-07-19

    Applicant: BASF SE

    Abstract: Disclosed are compounds of formula (1) and (2) and/or E/E-, E/Z- or Z/Z geometrical isomer forms thereof; wherein R1-R5, R1-R11 and A are defined as in description. The compounds are used as UV absorbers for protecting household products from photolytic and oxidative degradation, as plastic additives, preferably for food and pharmaceutical packaging applications, for preventing photo-degradation of food by incorporation of the compounds of formula (1′) and/or (2′) into transparent food containers, for protection of UV-A sensitive drugs from photo-degradation by incorporation of UV absorber in transparent blister foils or transparent pharmacy containers, as additives for photographic and printing applications, as additives for electronic applications and protecting the ingredients in agriculture applications.

    Abstract translation: 公开了式(1)和(2)和/或E / E-,E / Z-或Z / Z几何异构体形式的化合物; 其中R1-R5,R1-R11和A如描述中所定义。 该化合物用作紫外线吸收剂,用于保护家用产品免受光解和氧化降解,作为塑料添加剂,优选用于食品和药物包装应用,用于通过掺入式(1')和/或 (2')放入透明食品容器中,通过将UV吸收剂掺入透明吸塑箔或透明药房容器中作为照相和印刷应用的添加剂,作为电子应用和保护的添加剂,保护UV-A敏感药物免受光降解 农业应用中的成分。

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