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Method and apparatus for purifying acrylic acid, and acrylic acid purified by the method 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • C07C-051/42
출원번호 US-0216162 (1994-03-22)
우선권정보 CH-0000922 (1993-03-26)
발명자 / 주소
  • Saxer Kurt (Buchs CHX) Stadler Ralph (Buchs CHX)
출원인 / 주소
  • Sulzer Chemtech AG (Winterthur CHX 03)
인용정보 피인용 횟수 : 36  인용 특허 : 0

초록

A method of purifying acrylic acid by fractional crystallization is provided. The method includes the steps of subjecting an acrylic acid containing mixture to a dynamic crystallization stage to recover purified acrylic acid, leaving a residue containing acrylic acid; subjecting the residue to a sta

대표청구항

A method of purifying acrylic acid by fractional crystallization comprising the steps of subjecting an acrylic acid containing mixture to a dynamic crystallization stage to recover purified acrylic acid, leaving a residue containing acrylic acid; subjecting the residue to a static crystallization st

이 특허를 인용한 특허 (36)

  1. Nordhoff, Stefan; Balduf, Torsten; Bub, Gunther; Fornika, Roland; Mosler, Jurgen; Rathke, Thomas; Kobus, Axel; Thong, Dennis, (Meth)acrylic acid crystal and process for producing aqueous (meth)acrylic acid.
  2. Nordhoff, Stefan; Kobus, Axel; Gross, Stefan; Lausch, Hans-Rolf; Balduf, Torsten; Fornika, Roland; Bub, Guenther, Continuous process for the production and purification of acrylic acid.
  3. Sakamoto, Kazuhiko; Ueno, Koji; Ishii, Yoshitake; Kitaura, Masatsugu, Device and process for crystallizing (meth)acrylic acid.
  4. Nitz, Joerg-Joachim; Kohlstruk, Stephan; Jansen, Robert; Mueller, Anja; Cassens, Jan; Hengstermann, Axel, Fine purification of isophoronenitrile by melt crystallization.
  5. Thiel, Joachim; Schroder, Jurgen; Nestler, Gerhard, Fractional condensation of a product gas mixture containing acrylic acid.
  6. Nagaki, Dick; Peterson, Craig J.; Chapman, Josefina T.; Mueller, Sean; Lodha, Himanshu, Integrated process for the production of acrylic acids and acrylates.
  7. Peterson, Craig J.; Bowden, Elizabeth; Chapman, Josefina T.; Mueller, Sean; Nagaki, Dick; Pan, Tianshu; Lodha, Himanshu, Integrated process for the production of acrylic acids and acrylates.
  8. Sakamoto, Kazuhiko; Ueno, Koji; Ishii, Yoshitake; Hirao, Harunori; Nakagawa, Satoshi, Method for crystallizing (meth)acrylic acid and method for regulating content of polymerization inhibitor in product (meth)acrylic acid.
  9. Kouji Ueno JP; Masatoshi Ueoka JP; Sei Nakahara JP, Method for producing acrylic acid.
  10. Bernd Eck DE; Otto Machhammer DE; Theo Proll DE; Volker Schliephake DE; Joachim Thiel DE; Klaus Brollos DE, Method for producing acrylic acid and methacrylic acid.
  11. Dubois, Jean-Luc, Method for producing bioresourced propionic acid from glycerol.
  12. Dubois, Jean-Luc, Method for producing bioresourced propionic acid from glycerol.
  13. Nestler,Gerhard; Mueller Engel,Klaus Joachim; Wickel,Stefan, Method for producing low-odor hydrogel-forming polymers.
  14. Eck, Bernd; Machhammer, Otto; Proll, Theo; Schliephake, Volker; Muller-Engel, Klaus Joachim, Method for purifying acrylic acid and methacrylic acid.
  15. Bastiaensen, Erik; Eck, Bernd; Thiel, Joachim, Method for purifying acrylic acid or methacrylic acid by crystallization and distillation.
  16. Heinrich Aichinger DE; Klaus Joachim Muller-Engel DE; Gerhard Nestler DE; Jurgen Schroder DE, Method for storing and/or transporting pure acrylic acid.
  17. Blaschke, Tim; Lang, Ortmund; Zajaczkowski-Fischer, Marta; Hartmann, Marco, Method for the continuous dehydration of 3-hydroxypropionic acid to form acrylic acid.
  18. Hammon,Ulrich; Eck,Bernd; Baumann,Dieter; Heilek,Joerg; Mueller Engel,Klaus Joachim, Method for the production of a purified melt of at least one monomer.
  19. Nordhoff, Stefan; Balduf, Torsten; Mosler, Jürgen; Uhlich, Wilfried; Yu Chiang, Dennis Thong; Kobus, Axel; Selbach, Arndt; Kohn, Jürgen, Method for the purification of (meth)acrylic acid.
  20. Hammon,Ulrich; Eck,Bernd; Baumann,Dieter; Heilek,Joerg; Mueller Engel,Klaus Joachim, Method of purifying a raw melt of at least one monomer by crystallization.
  21. Jansen, Halbe; Pfeil, Mathias, Multi-stage crystallisation process and apparatus to purify a compound.
  22. Stepanski, Manfred; Fässler, Peter; Coszach, Philippe, Process and apparatus for purification of a stream containing a cyclic ester of an alpha-hydroxycarboxylic acid.
  23. Schäfer, Matthias; Kuszlik, Andrzej; Lippuner, Florian; Engstler, Herbert, Process and apparatus for purification of acrylic acid.
  24. Timothy Allen Hale ; Robert Michael Mason ; Josefina Tseng Chapman ; James Clarence Day ; Chorng-Shyuan Tsay TW, Process for preparing (meth) acrylic acid.
  25. Nakagawa, Satoshi, Process for producing (meth) acrylic acid.
  26. Yada,Shuhei; Ogawa,Yasushi; Suzuki,Yoshiro; Takahashi,Kiyoshi; Takasaki,Kenji, Process for producing (meth)acrylic acids.
  27. Sakamoto, Kazuhiko; Ueno, Koji; Ishii, Yoshitake; Nakagawa, Satoshi, Process for production of (meth)acrylic acid.
  28. Seiji Miyazaki JP; Akira Ogawa JP; Yasutaka Nakashima JP; Yoshiaki Kobayashi JP; Mikiyoshi Araki JP, Process for purification of (meth)acrylic acid.
  29. Heilek, Jörg; Müller-Engel, Klaus Joachim; Adami, Christoph; Dieterle, Martin, Process for removing methacrylic acid from liquid phase comprising acrylic acid as a main constituent and target product, and methacrylic acid as a secondary component.
  30. Harrison, Stephen Patrick; Parten, William David; Stuart, Joseph Youngblood; Martin, John Stuart, Process for the production of methyl methacrylate.
  31. Mueller, Sean; Nagaki, Dick; Peterson, Craig J.; Scates, Mark O.; Weiner, Heiko; Chapman, Josefina T.; Locke, Alexandra S., Processes for producing acrylic acids and acrylates.
  32. Mueller, Sean; Chapman, Josefina; Peterson, Craig; Nagaki, Dick, Processes for the production of acrylic acids and acrylates.
  33. Mueller, Sean; Nagaki, Dick; Peterson, Craig J.; Chapman, Josefina T., Processes for the production of acrylic acids and acrylates from a trioxane feed.
  34. Balduf,Torsten; Nordhoff,Stefan; Yu Chiang,Dennis Thong; Kobus,Axel; Roos,Martin, Purification of a monomer by extraction with a phase former and crystallization.
  35. Machhammer Otto,DEX ; Dams Albrecht,DEX ; Eck Bernd,DEX ; Proll Theo,DEX, Purification of acrylic acid and methacrylic acid.
  36. Fiene, Martin; Rust, Harald; Massonne, Klemens; Stegmann, Veit; Huttenloch, Oliver; Heilek, Jörg, Purification of ionic liquids.
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