JPS537633A - Purification of terephthalic acid mother liquor - Google Patents

Purification of terephthalic acid mother liquor

Info

Publication number
JPS537633A
JPS537633A JP8162976A JP8162976A JPS537633A JP S537633 A JPS537633 A JP S537633A JP 8162976 A JP8162976 A JP 8162976A JP 8162976 A JP8162976 A JP 8162976A JP S537633 A JPS537633 A JP S537633A
Authority
JP
Japan
Prior art keywords
terephthalic acid
purification
mother liquor
acid mother
substd
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP8162976A
Other languages
Japanese (ja)
Other versions
JPS5635654B2 (en
Inventor
Makoto Komatsu
Teruo Aratake
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mizushima Aroma Co Ltd
Mitsubishi Gas Chemical Co Inc
Toyobo Co Ltd
Original Assignee
Mizushima Aroma Co Ltd
Mitsubishi Gas Chemical Co Inc
Toyobo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mizushima Aroma Co Ltd, Mitsubishi Gas Chemical Co Inc, Toyobo Co Ltd filed Critical Mizushima Aroma Co Ltd
Priority to JP8162976A priority Critical patent/JPS537633A/en
Publication of JPS537633A publication Critical patent/JPS537633A/en
Publication of JPS5635654B2 publication Critical patent/JPS5635654B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: Crude terephthalic acid prepared from p-dialkyl-substd. aromatic hydrocarbons is dissolved in hot water, and pure terephthalic acid is crystallized by cooling. An alkaline substance is added to the mother liquor and the mixt. is subjected to reverse osmosis treatment for purification.
COPYRIGHT: (C)1978,JPO&Japio
JP8162976A 1976-07-09 1976-07-09 Purification of terephthalic acid mother liquor Granted JPS537633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8162976A JPS537633A (en) 1976-07-09 1976-07-09 Purification of terephthalic acid mother liquor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8162976A JPS537633A (en) 1976-07-09 1976-07-09 Purification of terephthalic acid mother liquor

Publications (2)

Publication Number Publication Date
JPS537633A true JPS537633A (en) 1978-01-24
JPS5635654B2 JPS5635654B2 (en) 1981-08-19

Family

ID=13751614

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8162976A Granted JPS537633A (en) 1976-07-09 1976-07-09 Purification of terephthalic acid mother liquor

Country Status (1)

Country Link
JP (1) JPS537633A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001016067A3 (en) * 1999-08-30 2001-05-10 Shell Oil Co A process for separation of crude naphthalene dicarboxylic acid using reverse osmosis
JP2004217586A (en) * 2003-01-16 2004-08-05 Mitsubishi Gas Chem Co Inc Aromatic polycarboxylic acid and method for producing the acid anhydride

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001016067A3 (en) * 1999-08-30 2001-05-10 Shell Oil Co A process for separation of crude naphthalene dicarboxylic acid using reverse osmosis
JP2004217586A (en) * 2003-01-16 2004-08-05 Mitsubishi Gas Chem Co Inc Aromatic polycarboxylic acid and method for producing the acid anhydride

Also Published As

Publication number Publication date
JPS5635654B2 (en) 1981-08-19

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