公开(公告)号：US07964689B2

公开(公告)日：2011-06-21

申请号：US12880633

申请日：2010-09-13

Applicant: Stefan Nordhoff ,  Axel Kobus ,  Stefan Gross ,  Hans-Rolf Lausch ,  Torsten Balduf ,  Roland Fornika ,  Guenther Bub

Inventor： Stefan Nordhoff ,  Axel Kobus ,  Stefan Gross ,  Hans-Rolf Lausch ,  Torsten Balduf ,  Roland Fornika ,  Guenther Bub

IPC: C08F20/06 ,  C07C51/42

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。

公开(公告)号：US20110028664A1

公开(公告)日：2011-02-03

申请号：US12880633

申请日：2010-09-13

Applicant: Stefan Nordhoff ,  Axel Kobus ,  Stefan Gross ,  Hans-Rolf Lausch ,  Torsten Balduf ,  Roland Fornika ,  Guenther Bub

Inventor： Stefan Nordhoff ,  Axel Kobus ,  Stefan Gross ,  Hans-Rolf Lausch ,  Torsten Balduf ,  Roland Fornika ,  Guenther Bub

IPC: C08F2/00

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。

公开(公告)号：US07803969B2

公开(公告)日：2010-09-28

申请号：US10466176

申请日：2002-01-14

Applicant: Stefan Nordhoff ,  Axel Kobus ,  Stefan Gross ,  Hans-Rolf Lausch ,  Torsten Balduf ,  Roland Fornika ,  Guenther Bub

Inventor： Stefan Nordhoff ,  Axel Kobus ,  Stefan Gross ,  Hans-Rolf Lausch ,  Torsten Balduf ,  Roland Fornika ,  Guenther Bub

IPC: C07C51/42

CPC classification number: C07C51/43 ,  C07C57/04

Abstract: The invention relates to a process for the purification of (meth)acrylic acid in a process stage 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 process according to the invention, the apparatus suitable for implementing the process, and the use of the apparatus according to the invention for the production of (meth)acrylic acid are 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.

Abstract translation: 本发明涉及在工艺阶段中纯化（甲基）丙烯酸的方法，该方法包括以下工艺步骤：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）。 根据本发明的方法，适用于实施该方法的装置以及根据本发明的用于制备（甲基）丙烯酸的装置的用途，其特征在于由此获得的（甲基）丙烯酸的纯度高 以及在可实现的产量和必要的能量需求方面的高效率。