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    Methods for producing and purifying 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine compounds, the purified monomers, and polymers derived therefrom
    2.
    发明授权
    Methods for producing and purifying 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine compounds, the purified monomers, and polymers derived therefrom 有权
    2-芳基-3,3-双（4-羟基芳基）苯并嘧啶化合物的生产和纯化方法，纯化单体和衍生自其的聚合物

    公开(公告)号：US08247523B2

    公开(公告)日：2012-08-21

    申请号：US12333451

    申请日：2008-12-12

    申请人： Venkata Rama Narayanan Ganapathy Bhotla ,  Balakrishnan Ganesan ,  Kishan Gurram ,  Salkod Parameshwar Mallika ,  Kumar Arun Satyanarayana ,  Swaminathan Shubashree

    发明人： Venkata Rama Narayanan Ganapathy Bhotla ,  Balakrishnan Ganesan ,  Kishan Gurram ,  Salkod Parameshwar Mallika ,  Kumar Arun Satyanarayana ,  Swaminathan Shubashree

    IPC分类号： C08G73/10 ,  C08G73/00 ,  C08G73/06

    CPC分类号： C07D209/46 ,  C08G64/12

    摘要： Disclosed herein is a method for producing a purified 2-aryl-3,3-bis(4-hydroxyaryl) phthalimidine of formula (I) wherein R1 is hydrogen or a C1-25 hydrocarbyl group and R2 is a hydrogen, a C1-25 hydrocarbyl group, or a halogen, and wherein the method comprises dissolving a crude phthalimidine compound in an aqueous base solution; precipitating the dissolved, crude phthalimidine compound from the aqueous base solution by adding an acid in an amount effective to lower the pH of the solution to 9.0 to 12.0, to provide a semicrude phthalimidine compound; and isolating the semicrude phthalimidine compound from the aqueous base solution, to provide the purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine of formula (I), and having a phenolphthalein compound content of less than 2,500 ppm, based on the weight of the purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine. Subsequent trituration with aqueous methanol and recrystallization from isopropanol can result in product having levels of phenolphthalein derivatives that are not detectable.

    摘要翻译： 本文公开了一种制备式（I）的纯化的2-芳基-3,3-双（4-羟基芳基）苯并二氮嘧啶的方法，其中R1是氢或C1-25烃基，R2是氢，C1-25 烃基或卤素，并且其中所述方法包括将粗的邻苯二甲酰亚胺化合物溶解在碱性水溶液中; 通过加入一种有效降低溶液pH至9.0至12.0的酸，从碱性水溶液中沉淀出溶解的粗的苯并二氮嘧啶化合物，得到半羟基苯并二氮嘧啶化合物; 并从碱水溶液中分离半代邻苯二甲酰亚胺化合物，得到纯化的式（I）2-芳基-3,3-双（4-羟基芳基）苯并二氮嘧啶，其酚酞化合物含量小于2,500ppm，基于 关于纯化的2-芳基-3,3-双（4-羟基芳基）苯并二氮吡啶的重量。 随后用甲醇水溶液研磨并从异丙醇中重结晶可产生具有不可检测的酚酞衍生物含量的产物。

    Methods for producing and purifying 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine compounds, the purified monomers, and polymers derived therefrom
    5.
    发明授权
    Methods for producing and purifying 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine compounds, the purified monomers, and polymers derived therefrom 有权
    2-芳基-3,3-双（4-羟基芳基）苯并嘧啶化合物的生产和纯化方法，纯化单体和衍生自其的聚合物

    公开(公告)号：US08809486B2

    公开(公告)日：2014-08-19

    申请号：US13548934

    申请日：2012-07-13

    申请人： Venkata Rama Narayanan Ganapathy Bhotla ,  Balakrishnan Ganesan ,  Kishan Gurram ,  Salkod Parameshwar Mallika ,  Kumar Arun Satyanarayana ,  Swaminathan Shubashree

    发明人： Venkata Rama Narayanan Ganapathy Bhotla ,  Balakrishnan Ganesan ,  Kishan Gurram ,  Salkod Parameshwar Mallika ,  Kumar Arun Satyanarayana ,  Swaminathan Shubashree

    IPC分类号： C08G73/10 ,  C08G73/00 ,  C08G73/06

    CPC分类号： C07D209/46 ,  C08G64/12

    摘要： Disclosed is a method for producing a purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine of formula (I) wherein R1 is hydrogen or a C1-25 hydrocarbyl group and R2 is a hydrogen, a C1-25 hydrocarbyl group, or a halogen, and wherein the method comprises dissolving a crude phthalimidine compound in an aqueous base solution; precipitating the dissolved, crude phthalimidine compound from the aqueous base solution by adding an acid in an amount effective to lower the pH of the solution to 9.0 to 12.0, to provide a semicrude phthalimidine compound; and isolating the semicrude phthalimidine compound from the aqueous base solution, to provide the purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine of formula (I), and having a phenolphthalein compound content of less than 2,500 ppm, based on the weight of the purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine. Subsequent trituration with aqueous methanol and recrystallization from isopropanol can result in product having undetectable levels of phenolphthalein derivatives.

    摘要翻译： 公开了一种制备式（I）的纯化的2-芳基-3,3-双（4-羟基芳基）苯并二氮嘧啶的方法，其中R1是氢或C1-25烃基，R2是氢，C1-25烃基 基团或卤素，并且其中所述方法包括将粗的邻苯二酰亚胺化合物溶解在碱性水溶液中; 通过加入一种有效降低溶液pH至9.0至12.0的酸，从碱性水溶液中沉淀出溶解的粗的苯并二氮嘧啶化合物，得到半羟基苯并二氮嘧啶化合物; 并从碱水溶液中分离半代邻苯二甲酰亚胺化合物，得到纯化的式（I）2-芳基-3,3-双（4-羟基芳基）苯并二氮嘧啶，其酚酞化合物含量小于2,500ppm，基于 关于纯化的2-芳基-3,3-双（4-羟基芳基）苯并二氮吡啶的重量。 随后用甲醇水溶液研磨并从异丙醇中重结晶可导致具有不可检测水平的酚酞衍生物的产物。