DE3837955C2 - - Google Patents
Info
- Publication number
- DE3837955C2 DE3837955C2 DE19883837955 DE3837955A DE3837955C2 DE 3837955 C2 DE3837955 C2 DE 3837955C2 DE 19883837955 DE19883837955 DE 19883837955 DE 3837955 A DE3837955 A DE 3837955A DE 3837955 C2 DE3837955 C2 DE 3837955C2
- Authority
- DE
- Germany
- Prior art keywords
- acrylic acid
- column
- boiling
- products
- rectification column
- 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.)
- Expired - Lifetime
Links
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 26
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 26
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 12
- 238000009835 boiling Methods 0.000 claims description 10
- 239000003112 inhibitor Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000006227 byproduct Substances 0.000 claims description 8
- 239000000047 product Substances 0.000 claims description 6
- 239000003381 stabilizer Substances 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 4
- 238000001944 continuous distillation Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000004821 distillation Methods 0.000 claims description 2
- CDAWCLOXVUBKRW-UHFFFAOYSA-N 2-aminophenol Chemical class NC1=CC=CC=C1O CDAWCLOXVUBKRW-UHFFFAOYSA-N 0.000 claims 1
- -1 methyl tertiary butyl Chemical group 0.000 claims 1
- DAHPIMYBWVSMKQ-UHFFFAOYSA-N n-hydroxy-n-phenylnitrous amide Chemical compound O=NN(O)C1=CC=CC=C1 DAHPIMYBWVSMKQ-UHFFFAOYSA-N 0.000 claims 1
- YCIMNLLNPGFGHC-UHFFFAOYSA-N o-dihydroxy-benzene Natural products OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 description 7
- 239000007859 condensation product Substances 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 150000002605 large molecules Chemical class 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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
- C07C51/50—Use of additives, e.g. for stabilisation
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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19883837955 DE3837955A1 (de) | 1987-11-13 | 1988-11-09 | Kontinuierliches destillationsverfahren zur gewinnung von beispielsweise hydrochinon-stabilisierter acrylsaeure |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3738569 | 1987-11-13 | ||
| DE19883837955 DE3837955A1 (de) | 1987-11-13 | 1988-11-09 | Kontinuierliches destillationsverfahren zur gewinnung von beispielsweise hydrochinon-stabilisierter acrylsaeure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3837955A1 DE3837955A1 (de) | 1989-05-24 |
| DE3837955C2 true DE3837955C2 (enrdf_load_stackoverflow) | 1990-07-19 |
Family
ID=25861772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19883837955 Granted DE3837955A1 (de) | 1987-11-13 | 1988-11-09 | Kontinuierliches destillationsverfahren zur gewinnung von beispielsweise hydrochinon-stabilisierter acrylsaeure |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3837955A1 (enrdf_load_stackoverflow) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5728872A (en) * | 1994-06-27 | 1998-03-17 | Lutz Riemenschneider | Stabilized acrylic acid compositions |
| DE19746689A1 (de) | 1997-10-22 | 1999-04-29 | Basf Ag | Verfahren zur Herstellung von (Meth)acrylsäure |
| JP3992643B2 (ja) * | 2003-05-09 | 2007-10-17 | 株式会社日本触媒 | （メタ）アクリル酸および／またはそのエステルの蒸留方法 |
| CN1305832C (zh) * | 2003-11-28 | 2007-03-21 | 三菱化学株式会社 | (甲基)丙烯酸的提纯方法 |
| WO2025114418A1 (en) * | 2023-11-28 | 2025-06-05 | Basf Se | Process for the distillation of acrylic acid with split-dosing of polymerization inhibitor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3575418D1 (de) * | 1984-10-10 | 1990-02-22 | Amoco Corp | Verfahren zur reinigung von methacrylsaeure. |
-
1988
- 1988-11-09 DE DE19883837955 patent/DE3837955A1/de active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE3837955A1 (de) | 1989-05-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| D2 | Grant after examination | ||
| 8363 | Opposition against the patent | ||
| 8365 | Fully valid after opposition proceedings | ||
| 8339 | Ceased/non-payment of the annual fee |