IN170713B - - Google Patents
Info
- Publication number
- IN170713B IN170713B IN516/CAL/88A IN516CA1988A IN170713B IN 170713 B IN170713 B IN 170713B IN 516CA1988 A IN516CA1988 A IN 516CA1988A IN 170713 B IN170713 B IN 170713B
- Authority
- IN
- India
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C57/00—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms
- C07C57/02—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms with only carbon-to-carbon double bonds as unsaturation
- C07C57/03—Monocarboxylic acids
- C07C57/04—Acrylic acid; Methacrylic acid
-
- 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
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25380887A JPH0753687B2 (ja) | 1987-10-09 | 1987-10-09 | メタクリル酸の精製法 |
| JP25468787A JPH0753688B2 (ja) | 1987-10-12 | 1987-10-12 | メタクリル酸の精製方法 |
| JP2292188A JPH0753689B2 (ja) | 1988-02-04 | 1988-02-04 | メタクリル酸の精製法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IN170713B true IN170713B (de) | 1992-05-09 |
Family
ID=27284031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IN516/CAL/88A IN170713B (de) | 1987-10-09 | 1988-06-24 |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0312191B1 (de) |
| KR (1) | KR910002222B1 (de) |
| CN (1) | CN1023116C (de) |
| DE (1) | DE3874667T2 (de) |
| IN (1) | IN170713B (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5208370A (en) * | 1992-04-22 | 1993-05-04 | Rohm And Haas Co. | Method of reducing impurities in aqueous acrylic monomer solutions |
| US5571386A (en) * | 1994-05-31 | 1996-11-05 | Rohm And Haas Company | Process for grade acrylic acid |
| US5961790A (en) * | 1994-12-14 | 1999-10-05 | Basf Aktiengesellschaft | Separation of (meth) acrylic acid by rectification |
| TW524796B (en) * | 1997-11-17 | 2003-03-21 | Sumitomo Chemical Co | Method for producing acrylic acid |
| WO2005051883A1 (ja) * | 2003-11-28 | 2005-06-09 | Mitsubishi Chemical Corporation | （メタ）アクリル酸の精製方法 |
| DE102005019911A1 (de) | 2005-04-27 | 2006-11-02 | Basf Ag | Verfahren der rektifikativen Auftrennung einer Acrylsäure und/oder Methacrylsäure enthaltenden Flüssigkeit |
| EP2085376B1 (de) | 2008-01-30 | 2012-09-05 | Evonik Röhm GmbH | Verfahren zur Herstellung hochreiner Methacrylsäure |
| FR3064630B1 (fr) * | 2017-04-04 | 2019-09-13 | Arkema France | Procede de purification d'acide (meth)acrylique incluant une colonne de distillation a paroi separatrice |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3725208A (en) * | 1971-08-20 | 1973-04-03 | Nippon Kayaku Kk | Process for purification of acrylic acid from aldehydes by distillation with a reagent |
| DE2235326A1 (de) * | 1972-07-19 | 1974-02-07 | Degussa | Verfahren zur reinigung 1,2-ungesaettigter carbonsaeuren |
| JPH0729977B2 (ja) * | 1986-12-26 | 1995-04-05 | 三井東圧化学株式会社 | メタクリル酸の精製方法 |
-
1988
- 1988-06-24 DE DE8888305763T patent/DE3874667T2/de not_active Expired - Lifetime
- 1988-06-24 IN IN516/CAL/88A patent/IN170713B/en unknown
- 1988-06-24 EP EP88305763A patent/EP0312191B1/de not_active Expired - Lifetime
- 1988-06-25 CN CN88104811A patent/CN1023116C/zh not_active Expired - Lifetime
- 1988-06-25 KR KR1019880007744A patent/KR910002222B1/ko not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR910002222B1 (ko) | 1991-04-08 |
| DE3874667D1 (de) | 1992-10-22 |
| EP0312191A3 (en) | 1990-01-31 |
| CN1023116C (zh) | 1993-12-15 |
| EP0312191A2 (de) | 1989-04-19 |
| CN1032337A (zh) | 1989-04-12 |
| DE3874667T2 (de) | 1993-03-25 |
| EP0312191B1 (de) | 1992-09-16 |
| KR890006556A (ko) | 1989-06-14 |