RO62904A - - Google Patents
Info
- Publication number
- RO62904A RO62904A RO75481A RO7548173A RO62904A RO 62904 A RO62904 A RO 62904A RO 75481 A RO75481 A RO 75481A RO 7548173 A RO7548173 A RO 7548173A RO 62904 A RO62904 A RO 62904A
- Authority
- RO
- Romania
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
-
- 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
- C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S203/00—Distillation: processes, separatory
- Y10S203/22—Accessories
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2235326A DE2235326A1 (de) | 1972-07-19 | 1972-07-19 | Verfahren zur reinigung 1,2-ungesaettigter carbonsaeuren |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RO62904A true RO62904A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1977-09-15 |
Family
ID=5851016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO75481A RO62904A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-07-19 | 1973-07-16 |
Country Status (11)
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5726252B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1973-01-23 | 1982-06-03 | ||
| JPS5223017A (en) * | 1975-08-13 | 1977-02-21 | Toagosei Chem Ind Co Ltd | Process for purification of (meth) acrylic acid or its esters |
| US4358347A (en) * | 1982-01-26 | 1982-11-09 | The Dow Chemical Company | Removal of trace aldehydes from carboxylic acids |
| JPS606635A (ja) * | 1983-06-24 | 1985-01-14 | Mitsubishi Petrochem Co Ltd | １，２−不飽和カルボン酸および／またはそのエステルの精製法 |
| DE3446265A1 (de) * | 1984-12-19 | 1986-06-19 | Haarmann & Reimer Gmbh, 3450 Holzminden | Verfahren zur reinigung von rohem ss-phenylethylalkohol |
| JPH0675183B2 (ja) * | 1986-02-07 | 1994-09-21 | 富士写真フイルム株式会社 | ハロゲン化銀カラ−写真感光材料の処理方法 |
| DE3641996A1 (de) * | 1986-12-09 | 1988-06-16 | Basf Ag | Verfahren zum abtrennen von aldehyden aus (alpha),(beta)-olefinisch ungesaettigten carbonsaeuren |
| DE3874667T2 (de) * | 1987-10-09 | 1993-03-25 | Kuraray Co | Verfahren zur reinigung von methacrylsaeure. |
| US5196578A (en) * | 1987-10-09 | 1993-03-23 | Mitsui Toatsu Chemicals, Incorporated | Purification process of methacrylic acid |
| US5023372A (en) * | 1989-05-16 | 1991-06-11 | Betz Laboratories, Inc. | Methods and compositions for inhibiting (meth)acrylic acid polymerization |
| US5208370A (en) * | 1992-04-22 | 1993-05-04 | Rohm And Haas Co. | Method of reducing impurities in aqueous acrylic monomer solutions |
| US5358611A (en) * | 1993-05-17 | 1994-10-25 | Rohm And Haas Company | Method of reducing impurities in aqueous monomer solutions |
| US5759358A (en) * | 1994-05-31 | 1998-06-02 | Rohm And Haas Company | Process for pure grade acrylic acid |
| US5571386A (en) * | 1994-05-31 | 1996-11-05 | Rohm And Haas Company | Process for grade acrylic acid |
| US5482597A (en) * | 1994-11-23 | 1996-01-09 | Basf Aktiengesellschaft | Purification of crude (meth)acrylic acid |
| US5961790A (en) * | 1994-12-14 | 1999-10-05 | Basf Aktiengesellschaft | Separation of (meth) acrylic acid by rectification |
| US5606094A (en) * | 1995-01-10 | 1997-02-25 | Baker Hughes Incorporated | Acrolein scavengers |
| DE19501326A1 (de) * | 1995-01-18 | 1996-07-25 | Basf Ag | Verfahren der rektifikativen Abtrennung von (Meth)acrylsäure aus einem (Meth)acrylsäure als Hauptbestandteil und niedere Aldehyde als Nebenbestandteile enthaltenden Gemisch in einer aus Abtriebsteil und Verstärkerteil bestehenden Rektifiaktionskolonne |
| DE19536179A1 (de) * | 1995-09-28 | 1997-04-03 | Basf Ag | Verfahren zur rektifikativen Abtrennung von ungesättigten Carbonsäuren aus Lösungsmitteln |
| TW524796B (en) * | 1997-11-17 | 2003-03-21 | Sumitomo Chemical Co | Method for producing acrylic acid |
| DE19810962A1 (de) * | 1998-03-13 | 1999-09-16 | Basf Ag | Verfahren der rektifikativen Abtrennung von (Meth)acrylsäure aus einem (Meth)acrylsäure und eine höher als (Meth)acrylsäure siedende organische Flüssigkeit als Hauptbestandteile enthaltenden Gemisch |
| US6331264B1 (en) | 1999-03-31 | 2001-12-18 | E. I. Du Pont De Nemours And Company | Low emission polymer compositions |
| US6277289B1 (en) | 1999-07-01 | 2001-08-21 | E. I. Du Pont De Nemours And Company | Treatment of aqueous aldehyde waste streams |
| US20040222154A1 (en) * | 2003-05-08 | 2004-11-11 | E.I.Du Pont De Nemours & Company | Treatment of non-aqueous aldehyde waste streams |
| WO2006114428A1 (de) * | 2005-04-27 | 2006-11-02 | Basf Aktiengesellschaft | Verfahren der rektifikativen auftrennung einer acrylsäure und/oder methacrylsäure enthaltenden flüssigkeit |
| CN105026355A (zh) | 2013-03-15 | 2015-11-04 | 罗门哈斯公司 | 纯化(甲基)丙烯酸的方法 |
| CN103819331B (zh) * | 2014-02-28 | 2015-08-05 | 山东易达利化工有限公司 | 一种甲基丙烯酸的脱色和提纯方法 |
| JP6290460B2 (ja) | 2015-02-05 | 2018-03-07 | 株式会社日本触媒 | アクリル酸の製造方法 |
| EP4015498B1 (de) | 2020-12-18 | 2024-04-24 | Basf Se | Verfahren zur kontinuierlichen herstellung von acrylsäure-n-butylester |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2414639A (en) * | 1940-01-15 | 1947-01-21 | Shell Dev | Process for concentrating diolefins utilizing methyl amines as azeotrope formers |
| US2386365A (en) * | 1941-02-28 | 1945-10-09 | Distillers Co Yeast Ltd | Manufacture of polymerizable unsaturated acids |
| US2375036A (en) * | 1942-09-08 | 1945-05-01 | Shell Dev | Extractive distillation |
| US2609387A (en) * | 1948-12-01 | 1952-09-02 | Monsanto Chemicals | Removal of amine inhibitors from unsaturated monomers |
| US3337740A (en) * | 1962-02-13 | 1967-08-22 | Deering Milliken Res Corp | Process for separating acrylic acid from impurities |
| US3274231A (en) * | 1962-09-13 | 1966-09-20 | Asahi Chemical Ind | Compositions and methods of stabilizing unsaturated organic nitriles |
| US3344144A (en) * | 1962-09-13 | 1967-09-26 | Asahi Chemical Ind | Inhibition of polymerization of monomeric compounds containing vinyl groups |
| US3478093A (en) * | 1966-02-19 | 1969-11-11 | Basf Ag | Separation of methacrylic acid and acrylic acid |
| US3639466A (en) * | 1967-04-03 | 1972-02-01 | Basf Ag | Production of acrylic acid from residues obtained in working up acrylic acid |
| GB1307582A (en) * | 1969-06-10 | 1973-02-21 | Rohm & Haas | Inhibition of polymerization of acrylic acids |
| JPS4924898B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1970-12-26 | 1974-06-26 | ||
| US3725208A (en) * | 1971-08-20 | 1973-04-03 | Nippon Kayaku Kk | Process for purification of acrylic acid from aldehydes by distillation with a reagent |
-
1972
- 1972-07-19 DE DE2235326A patent/DE2235326A1/de active Pending
-
1973
- 1973-07-06 DD DD172115A patent/DD106353A5/xx unknown
- 1973-07-12 AU AU58028/73A patent/AU5802873A/en not_active Expired
- 1973-07-16 RO RO75481A patent/RO62904A/ro unknown
- 1973-07-17 BE BE6044249A patent/BE802465A/xx unknown
- 1973-07-17 IT IT51517/73A patent/IT989913B/it active
- 1973-07-17 JP JP48082578A patent/JPS4951217A/ja active Pending
- 1973-07-18 AT AT632373A patent/AT321878B/de active
- 1973-07-19 FR FR7326551A patent/FR2193000B3/fr not_active Expired
- 1973-07-19 US US380664A patent/US3893895A/en not_active Expired - Lifetime
- 1973-07-19 NL NL7310061A patent/NL7310061A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4951217A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-05-18 |
| IT989913B (it) | 1975-06-10 |
| FR2193000A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-02-15 |
| NL7310061A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-01-22 |
| DE2235326A1 (de) | 1974-02-07 |
| AT321878B (de) | 1975-04-25 |
| BE802465A (fr) | 1974-01-17 |
| AU5802873A (en) | 1975-01-16 |
| DD106353A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1974-06-12 |
| US3893895A (en) | 1975-07-08 |
| FR2193000B3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-07-02 |