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Process for continuous preparation of terephthalic acid

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • C07C-051/33
출원번호 US-0454414 (1974-03-25)
우선권정보 JA-0038277 (1973-04-05)
발명자 / 주소
  • Yokota Yoshiro (Ohtake JA) Ueda Toshihiko (Iwakuni JA) Nakano Osamu (Iwakuni JA) Hirokane Sigeru (Waki JA) Hisatomi Yoshiro (Iwakuni JA)
출원인 / 주소
  • Mitsui Petrochemical Industries, Ltd. (Tokyo JA 03)
인용정보 피인용 횟수 : 24  인용 특허 : 0

초록

An improved process for continuously preparing terephthalic acid by a catalytic liquid-phase oxidation which comprises recycling a part of the mother liquor of the oxidation product to the catalytic liquid-phase oxidation zone either as such or after concentration, concentrating the remainder of the

대표청구항

In a process for continuously preparing terephthalic acid by oxidizing para-xylene with molecular oxygen in the liquid phase in acetic acid in the presence of a heavy metal oxidation catalyst, separating and collecting terephthalate acid from the resulting oxidation reaction mixture, recycling a par

이 특허를 인용한 특허 (24)

  1. Lin,Robert; de Vreede,Marcel, Extraction process for removal of impurities from an aqueous mixture.
  2. Lin,Robert; de Vreede,Marcel, Extraction process for removal of impurities from an oxidizer purge stream in the synthesis of carboxylic acid.
  3. Lin,Robert; de Vreede,Marcel, Extraction process for removal of impurities from an oxidizer purge stream in the synthesis of carboxylic acid.
  4. Lin,Robert, Extraction process for removal of impurities from mother liquor in the synthesis of carboxylic acid.
  5. Lin,Robert; de Vreede,Marcel, Extraction process for removal of impurities from mother liquor in the synthesis of carboxylic acid.
  6. King ; Jr. William M. (New Hanover County NC), High efficiency extraction method for recovering oxidation catalyst material from dimethyl terephthalate esterified oxid.
  7. Colborn, Robert Edgar; Hall, David Bruce; Koch, Peter; Oeckel, Gerald, Liquid phase oxidation of halogenated ortho-xylenes.
  8. Colborn, Robert Edgar; Hall, David Bruce; Koch, Peter; Oeckel, Gerald, Method for the manufacture of chlorophthalic anhydride.
  9. Colborn, Robert Edgar; Hall, David Bruce; Koch, Peter; Oeckel, Gerald, Method for the manufacture of halophthalic acids and anhydrides.
  10. Colborn, Robert Edgar; Hall, David Bruce; Koch, Peter Alois; Demuth, Bernd Volker; Wessel, Thomas; Mack, Karl Ernst; Tatake, Prashant Anil; Vakil, Uptal Mahendra; Gondkar, Shyamal Bhaskar; Pace, John Edward; Won, Kwang Woong, Method of making halophthalic acids and halophthalic anhydrides.
  11. Colborn, Robert Edgar; Hall, David Bruce; Koch, Peter Alois; Demuth, Bernd Volker; Wessel, Thomas; Mack, KarlErnst; Tatake, Prashant Anil; Vakil, Utpal Mahendra; Gondkar, Shyamal Bhaskar; Pace, John Edward; Won, Kwang Woong, Method of making halophthalic acids and halophthalic anhydrides.
  12. Roffia Paolo (Saronno ITX) Calini Pierangelo (Rho ITX) Tonti Sergio (Venezia Mestre ITX), Method of recovering in active form the catalyst for the terephthalic acid synthesis.
  13. Lin, Robert; de Vreede, Marcel, Optimized production of aromatic dicarboxylic acids.
  14. Lin, Robert; de Vreede, Marcel, Optimized production of aromatic dicarboxylic acids.
  15. Lin, Robert; Gibson, Philip Edward; Parker, Kenny Randolph, Process for removal of benzoic acid from an oxidizer purge stream.
  16. Lin,Robert; Gibson,Philip Edward; Parker,Kenny Randolph, Process for removal of benzoic acid from an oxidizer purge stream.
  17. Gibson,Philip Edward; Parker,Kenny Randolph; Jenkins, Jr.,Howard Wood, Process for removal of impurities from an oxidizer purge stream.
  18. Gibson,Philip Edward; Parker,Kenny Randolph; Jenkins, Jr.,Howard Wood, Process for removal of impurities from an oxidizer purge stream.
  19. Parker,Kenny Randolph; Lin,Robert, Process for removal of impurities from mother liquor in the synthesis of carboxylic acid using pressure filtration.
  20. Parker,Kenny Randolph; Lin,Robert, Process for removal of impurities from mother liquor in the synthesis of carboxylic acid using pressure filtration.
  21. Lavoie, Gino Georges; Hembre, Robert Thomas; Sumner, Jr., Charles Edwan; Bays, Joseph Nathaniel; Compton, Daniel Burts; Tennant, Brent Alan; Davenport, Bryan Wayne; Lange, David; Floyd, Thomas Richard, Processes for producing aromatic dicarboxylic acids.
  22. Gibson, Philip Edward; Parker, Kenny Randolph, Versatile oxidation byproduct purge process.
  23. Gibson, Philip Edward; Parker, Kenny Randolph, Versatile oxidation byproduct purge process.
  24. Parker, Kenny Randolph; Gibson, Philip Edward, Versatile oxidation byproduct purge process.
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