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    • 4. 发明授权
    • Superabsorbent polymer made from acrylic acid
    • 由丙烯酸制成的超吸收聚合物
    • US07964689B2
    • 2011-06-21
    • US12880633
    • 2010-09-13
    • Stefan NordhoffAxel KobusStefan GrossHans-Rolf LauschTorsten BaldufRoland FornikaGuenther Bub
    • Stefan NordhoffAxel KobusStefan GrossHans-Rolf LauschTorsten BaldufRoland FornikaGuenther Bub
    • C08F20/06C07C51/42
    • C07C51/43C07C57/04
    • 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.
    • 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。
    • 5. 发明申请
    • SUPERABSORBENT POLYMER MADE FROM ACRYLIC ACID
    • 由丙烯酸制备的超级聚合物
    • US20110028664A1
    • 2011-02-03
    • US12880633
    • 2010-09-13
    • Stefan NordhoffAxel KobusStefan GrossHans-Rolf LauschTorsten BaldufRoland FornikaGuenther Bub
    • Stefan NordhoffAxel KobusStefan GrossHans-Rolf LauschTorsten BaldufRoland FornikaGuenther Bub
    • C08F2/00
    • C07C51/43C07C57/04
    • 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.
    • 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。