PREPARATION OF METHACRYLIC ACID
    41.
    发明申请
    PREPARATION OF METHACRYLIC ACID 审中-公开
    甲基丙烯酸的制备

    公开(公告)号:US20140187817A1

    公开(公告)日:2014-07-03

    申请号:US14240547

    申请日:2011-09-16

    CPC classification number: C07C51/43 C07C57/04

    Abstract: The invention relates to a process for preparation of methacrylic acid, comprising process steps a) providing a crude methacrylic acid-comprising aqueous solution comprising at least one impurity at least partially dissolved therein; b) precipitation of at least a part of the at least one impurity from the crude methacrylic acid-comprising aqueous solution to form at least one solid impurity and a mother liquor; c) separation of at least a part of the at least one solid impurity from the mother liquor to obtain a purified methacrylic acid-comprising aqueous solution and a solid impurity; d) separation of methacrylic acid from the purified methacrylic acid-comprising aqueous solution.

    Abstract translation: 本发明涉及一种制备甲基丙烯酸的方法,包括方法步骤a)提供包含至少部分溶解于其中的至少一种杂质的含粗甲基丙烯酸的水溶液; b)从含粗甲基丙烯酸的水溶液中沉淀至少一部分所述至少一种杂质以形成至少一种固体杂质和母液; c)从母液中分离出至少一部分固体杂质,得到纯化的含甲基丙烯酸的水溶液和固体杂质; d)从纯化的含甲基丙烯酸的水溶液中分离甲基丙烯酸。

    Superabsorbent polymers and methods of making the same
    42.
    发明授权
    Superabsorbent polymers and methods of making the same 有权
    超吸收性聚合物及其制造方法

    公开(公告)号:US08445617B2

    公开(公告)日:2013-05-21

    申请号:US13668899

    申请日:2012-11-05

    CPC classification number: C08J3/00 C07C51/43 C07C57/04

    Abstract: The invention relates to producing a superabsorbent polymer comprising (I) producing a (meth)acrylic acid comprising the steps of (a) synthesizing a crude (meth)acrylic acid phase; (b) distillatively working-up the crude (meth)acrylic acid phase to obtain a (meth)acrylic acid phase and a dimer phase comprising (meth)acrylic acid dimers and/or (meth)acrylic acid oligomers; (c) splitting at least a part of the (meth)acrylic acid dimers or of the (meth)acrylic acid oligomers or both from the dimer phase to obtain a (meth)acrylic acid-comprising a low boiling phase and a high boiling phase comprising less (meth)acrylic acid than the low boiling phase; (d) separating at least a part of the (meth)acrylic acid from the low boiling phase by forming crystals to obtain a pure (meth)acrylic acid, and a residue; (II) polymerizing a monomer phase comprising the pure (meth)acrylic acid to obtain a polymer phase; and (III) working-up the polymer phase to obtain the polymer.

    Abstract translation: 本发明涉及制备超吸收性聚合物,其包括(I)生产(甲基)丙烯酸,其包括以下步骤:(a)合成粗制(甲基)丙烯酸相; (b)蒸馏处理粗(甲基)丙烯酸相以获得(甲基)丙烯酸相和包含(甲基)丙烯酸二聚体和/或(甲基)丙烯酸低聚物的二聚体相; (c)从二聚体相分解至少一部分(甲基)丙烯酸二聚体或(甲基)丙烯酸低聚物或两者,得到包含低沸点相和高沸点相的(甲基)丙烯酸 包括比低沸点相少的(甲基)丙烯酸; (d)通过形成晶体从低沸点相分离出至少一部分(甲基)丙烯酸,得到纯的(甲基)丙烯酸和残余物; (II)使包含纯(甲基)丙烯酸的单体相聚合以获得聚合物相; 和(III)加工聚合物相以获得聚合物。

    Superabsorbent polymers and methods of making the same
    43.
    发明授权
    Superabsorbent polymers and methods of making the same 有权
    超吸收性聚合物及其制造方法

    公开(公告)号:US08309668B2

    公开(公告)日:2012-11-13

    申请号:US13461220

    申请日:2012-05-01

    CPC classification number: C08J3/00 C07C51/43 C07C57/04

    Abstract: The present invention relates to a process for producing a superabsorbent a polymer comprises (I) producing a pure (meth)acrylic acid comprising the steps of (a) synthesizing a crude (meth)acrylic acid phase; (b) distillatively working-up the crude (meth)acrylic acid phase to obtain a (meth)acrylic acid phase and a dimer phase comprising (meth)acrylic acid dimers or (meth)acrylic acid oligomers or both; (c) splitting at least a part of the (meth)acrylic acid dimers or of the (meth)acrylic acid oligomers or both from the dimer phase to obtain a (meth)acrylic acid-comprising low boiling phase and a high boiling phase comprising less (meth)acrylic acid than the low boiling phase; (d) separating at least a part of the (meth)acrylic acid from the low boiling phase to obtain a pure (meth)acrylic acid, and a residue; (II) polymerizing a monomer phase comprising the pure (meth)acrylic acid to obtain a polymer phase; and (III) working-up the polymer phase to obtain the polymer.

    Abstract translation: 本发明涉及聚合物的超吸收剂的制造方法,其特征在于:(I)制造纯(甲基)丙烯酸,其特征在于,包括:(a)合成粗制(甲基)丙烯酸相的工序; (b)蒸馏处理粗(甲基)丙烯酸相以获得(甲基)丙烯酸相和包含(甲基)丙烯酸二聚体或(甲基)丙烯酸低聚物或二者的二聚体相; (c)从二聚体相分离至少一部分(甲基)丙烯酸二聚体或(甲基)丙烯酸低聚物或两者,得到包含(甲基)丙烯酸的低沸点相和高沸点相,包括 较少(甲基)丙烯酸低于低沸点相; (d)从低沸点相分离出至少一部分(甲基)丙烯酸,得到纯(甲基)丙烯酸,残渣; (II)使包含纯(甲基)丙烯酸的单体相聚合以获得聚合物相; 和(III)加工聚合物相以获得聚合物。

    Superabsorbent polymer made from acrylic acid
    44.
    发明授权
    Superabsorbent polymer made from acrylic acid 有权
    由丙烯酸制成的超吸收聚合物

    公开(公告)号:US07964689B2

    公开(公告)日:2011-06-21

    申请号:US12880633

    申请日:2010-09-13

    CPC classification number: C07C51/43 C07C57/04

    Abstract: The invention relates to a superabsorbent polymer that includes a (meth)acrylic acid made by a process that comprises the following process steps: a) (meth)acrylic acid is crystallized out from a mother liquor; b) crystallized (meth)acrylic acid is separated from the mother liquor; c) at least part of the separated (meth)acrylic acid crystals are melted; d) the melted part is at least partially recycled to the step a) or step b). The superabsorbent polymer according to the present invention includes an process to make (meth)acrylic acid, the apparatus suitable for implementing the process, and the use of the apparatus for the production of (meth)acrylic acid characterized by a high purity of the thereby obtainable (meth)acrylic acid as well as by a high efficiency with regard to the achievable yield and necessary energy requirement, thereby providing an improved superabsorbent polymer.

    Abstract translation: 本发明涉及一种超吸收性聚合物,其包含通过包括以下工艺步骤的方法制备的(甲基)丙烯酸:a)(甲基)丙烯酸从母液中结晶出来; b)结晶的(甲基)丙烯酸与母液分离; c)至少部分分离的(甲基)丙烯酸晶体熔融; d)熔化的部分至少部分地再循环到步骤a)或步骤b)。 根据本发明的超吸收性聚合物包括制备(甲基)丙烯酸的方法,适用于实施该方法的装置,以及用于生产特征在于其高纯度的(甲基)丙烯酸的装置的用途 可获得的(甲基)丙烯酸,以及关于可实现的产率和所需的能量需求的高效率,从而提供改进的超吸收性聚合物。

    SUPERABSORBENT POLYMER MADE FROM ACRYLIC ACID
    45.
    发明申请
    SUPERABSORBENT POLYMER MADE FROM ACRYLIC ACID 有权
    由丙烯酸制备的超级聚合物

    公开(公告)号:US20110028664A1

    公开(公告)日:2011-02-03

    申请号:US12880633

    申请日:2010-09-13

    CPC classification number: C07C51/43 C07C57/04

    Abstract: The invention relates to a superabsorbent polymer that includes a (meth)acrylic acid made by a process that comprises the following process steps: a) (meth)acrylic acid is crystallized out from a mother liquor; b) crystallized (meth)acrylic acid is separated from the mother liquor; c) at least part of the separated (meth)acrylic acid crystals are melted; d) the melted part is at least partially recycled to the step a) or step b). The superabsorbent polymer according to the present invention includes an process to make (meth)acrylic acid, the apparatus suitable for implementing the process, and the use of the apparatus for the production of (meth)acrylic acid characterized by a high purity of the thereby obtainable (meth)acrylic acid as well as by a high efficiency with regard to the achievable yield and necessary energy requirement, thereby providing an improved superabsorbent polymer.

    Abstract translation: 本发明涉及一种超吸收性聚合物,其包含通过包括以下工艺步骤的方法制备的(甲基)丙烯酸:a)(甲基)丙烯酸从母液中结晶出来; b)结晶的(甲基)丙烯酸与母液分离; c)至少部分分离的(甲基)丙烯酸晶体熔融; d)熔化的部分至少部分地再循环到步骤a)或步骤b)。 根据本发明的超吸收性聚合物包括制备(甲基)丙烯酸的方法,适用于实施该方法的装置,以及用于生产特征在于其高纯度的(甲基)丙烯酸的装置的用途 可获得的(甲基)丙烯酸,以及关于可实现的产率和所需的能量需求的高效率,从而提供改进的超吸收性聚合物。

    Process for Production of (Meth)Acrylic Acid with High Boiling Fraction Work-Up By Means of Crystallization
    47.
    发明申请
    Process for Production of (Meth)Acrylic Acid with High Boiling Fraction Work-Up By Means of Crystallization 有权
    通过结晶法生产具有高沸点馏分的(甲基)丙烯酸的方法

    公开(公告)号:US20080287616A1

    公开(公告)日:2008-11-20

    申请号:US12063949

    申请日:2006-08-11

    CPC classification number: C08J3/00 C07C51/43 C07C57/04

    Abstract: A process for production of (meth)acrylic acid is disclosed. The process includes synthesizing and distillatively working-up a crude (meth)acrylic acid phase to obtain a (meth)acrylic acid phase and a dimer phase including (meth)acrylic acid dimers and/or (meth)acrylic acid oligomers. At least a part of the (meth)acrylic acid dimers and/or of the (meth)acrylic acid oligomers from the dimer phase is split to obtain a (meth)acrylic acid including a low-boiling phase and a high-boiling phase including less (meth)acrylic acid than the low-boiling phase. At least a part of the (meth)acrylic acid from the low-boiling phase is separated by forming of one or more crystals to obtain a pure (meth)acrylic acid and a residue. Also disclosed is a device for production of (meth)acrylic acid, a process for production of a polymer as well as chemical products based on or including (meth)acrylic acid or a polymer as well as the use of (meth)acrylic acid or polymers in chemical products.

    Abstract translation: 公开了(甲基)丙烯酸的生产方法。 该方法包括合成和蒸馏处理粗(甲基)丙烯酸相以获得(甲基)丙烯酸相和包含(甲基)丙烯酸二聚体和/或(甲基)丙烯酸低聚物的二聚体相。 (甲基)丙烯酸二聚体和/或来自二聚体相的(甲基)丙烯酸低聚物的至少一部分被分裂,得到包含低沸点相和高沸点相的(甲基)丙烯酸,包括 (甲基)丙烯酸低于低沸点相。 通过形成一种或多种晶体将至少一部分来自低沸点相的(甲基)丙烯酸分离,得到纯的(甲基)丙烯酸和残余物。 还公开了用于生产(甲基)丙烯酸的装置,聚合物的制造方法以及基于(或)(甲基)丙烯酸或聚合物的化学产品,以及使用(甲基)丙烯酸或 化学产品中的聚合物。

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