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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
- C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
- C07C51/46—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation by azeotropic distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/54—Preparation of carboxylic acid anhydrides
- C07C51/56—Preparation 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)
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 (en:Method) | 2004-04-10 |
Family
ID=26617219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IN377CA2002 IN192334B (en:Method) | 2001-06-19 | 2002-06-17 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6960670B2 (en:Method) |
| CN (1) | CN1231450C (en:Method) |
| IN (1) | IN192334B (en:Method) |
Families Citing this family (5)
| 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 |
| CN117504545B (zh) * | 2024-01-08 | 2024-11-22 | 常州瑞华化工工程技术股份有限公司 | 一种从含顺酐的气相中获得顺酐的装置和方法 |
Family Cites Families (10)
| 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 |
| JPH06145160A (ja) | 1992-11-06 | 1994-05-24 | Maruzen Petrochem Co Ltd | 無水マレイン酸の製造方法 |
| JPH05262754A (ja) | 1992-03-17 | 1993-10-12 | Maruzen Petrochem Co Ltd | 無水マレイン酸の製造方法 |
| JPH05262755A (ja) | 1992-03-17 | 1993-10-12 | Maruzen Petrochem Co Ltd | 無水マレイン酸の製造法 |
| 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 |
-
2002
- 2002-06-17 IN IN377CA2002 patent/IN192334B/en unknown
- 2002-06-19 US US10/174,669 patent/US6960670B2/en not_active Expired - Fee Related
- 2002-06-19 CN CN02123146.XA patent/CN1231450C/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1231450C (zh) | 2005-12-14 |
| US20030023101A1 (en) | 2003-01-30 |
| US6960670B2 (en) | 2005-11-01 |
| CN1406920A (zh) | 2003-04-02 |