IN192334B - - Google Patents

Info

Publication number
IN192334B
IN192334B IN377CA2002A IN192334B IN 192334 B IN192334 B IN 192334B IN 377CA2002 A IN377CA2002 A IN 377CA2002A IN 192334 B IN192334 B IN 192334B
Authority
IN
India
Application number
Other languages
English (en)
Inventor
Tadayoshi Kawashima
Yoshitake Ishi
Kei Hamamoto
Souichi Yamada
Tetsuya Kajihara
Original Assignee
Nippon Catalytic Chem Ind
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 Nippon Catalytic Chem Ind filed Critical Nippon Catalytic Chem Ind
Publication of IN192334B publication Critical patent/IN192334B/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42Separation; Purification; Stabilisation; Use of additives
    • C07C51/43Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
    • C07C51/44Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
    • C07C51/46Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation by azeotropic distillation
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/54Preparation of carboxylic acid anhydrides
    • C07C51/56Preparation of carboxylic acid anhydrides from organic acids, their salts, their esters or their halides, e.g. by carboxylation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Furan Compounds (AREA)
IN377CA2002 2001-06-19 2002-06-17 IN192334B (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001185340 2001-06-19
JP2001302013 2001-09-28

Publications (1)

Publication Number Publication Date
IN192334B true IN192334B (nl) 2004-04-10

Family

ID=26617219

Family Applications (1)

Application Number Title Priority Date Filing Date
IN377CA2002 IN192334B (nl) 2001-06-19 2002-06-17

Country Status (3)

Country Link
US (1) US6960670B2 (nl)
CN (1) CN1231450C (nl)
IN (1) IN192334B (nl)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107011300B (zh) * 2017-05-27 2020-04-24 天津科林泰克科技有限公司 一种顺酸连续脱水制备顺酐的方法
CN112759568B (zh) * 2019-11-01 2022-08-19 中国石油化工股份有限公司 处理含苯干气并制取顺酐的方法和装置
CN114540065B (zh) * 2022-02-18 2022-10-25 山东大学 一种采用邻二甲苯和水提取沥青可溶物的方法
CN116425176B (zh) * 2023-04-27 2024-08-23 河南省氟基新材料科技有限公司 一种普鲁士蓝类材料的后处理方法及应用

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2729600A (en) * 1951-08-29 1956-01-03 Exxon Research Engineering Co Azeotropic dehydration of maleic acid to anhydride
FR1317308A (fr) 1961-12-28 1963-02-08 Electro Chimie Soc D Procédé de production d'anhydride maléique
DE1443826A1 (de) * 1962-03-01 1969-09-18 Hoechst Ag Verfahren zur kontinuierlichen Wasserabspaltung aus organischen Verbindungen
GB1424747A (en) 1973-08-28 1976-02-11 Ucb Sa Method and apparatus for the continuous dehydration of maleic acid
JPS63313782A (ja) 1987-06-16 1988-12-21 Nippon Steel Chem Co Ltd 無水マレイン酸の回収方法
JP3029625B2 (ja) 1989-08-18 2000-04-04 旭化成工業株式会社 パルス幅変調回路
JPH05262755A (ja) 1992-03-17 1993-10-12 Maruzen Petrochem Co Ltd 無水マレイン酸の製造法
JPH05262754A (ja) 1992-03-17 1993-10-12 Maruzen Petrochem Co Ltd 無水マレイン酸の製造方法
JPH06145160A (ja) 1992-11-06 1994-05-24 Maruzen Petrochem Co Ltd 無水マレイン酸の製造方法
JPH05261292A (ja) 1992-03-18 1993-10-12 Mitsubishi Kasei Corp 無水マレイン酸製造用触媒の製造法

Also Published As

Publication number Publication date
US6960670B2 (en) 2005-11-01
CN1231450C (zh) 2005-12-14
US20030023101A1 (en) 2003-01-30
CN1406920A (zh) 2003-04-02

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