ATE27697T1 - Herstellung von alkylglyoxylaten grosser reinheit. - Google Patents
Herstellung von alkylglyoxylaten grosser reinheit.Info
- Publication number
- ATE27697T1 ATE27697T1 AT84870142T AT84870142T ATE27697T1 AT E27697 T1 ATE27697 T1 AT E27697T1 AT 84870142 T AT84870142 T AT 84870142T AT 84870142 T AT84870142 T AT 84870142T AT E27697 T1 ATE27697 T1 AT E27697T1
- Authority
- AT
- Austria
- Prior art keywords
- high purity
- alkyl
- production
- glyoxylate
- alkyl glyoxylates
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/10—Vacuum distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/48—Separation; Purification; Stabilisation; Use of additives
- C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
- C07C67/54—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/539,506 US4502923A (en) | 1983-10-06 | 1983-10-06 | Production of high purity alkyl glyoxylate by plural stage distillation |
EP84870142A EP0140866B1 (de) | 1983-10-06 | 1984-10-05 | Herstellung von Alkylglyoxylaten grosser Reinheit |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE27697T1 true ATE27697T1 (de) | 1987-06-15 |
Family
ID=24151510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT84870142T ATE27697T1 (de) | 1983-10-06 | 1984-10-05 | Herstellung von alkylglyoxylaten grosser reinheit. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4502923A (de) |
EP (1) | EP0140866B1 (de) |
JP (1) | JPS6097936A (de) |
AT (1) | ATE27697T1 (de) |
CA (1) | CA1195285A (de) |
DE (1) | DE3464133D1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3602274A1 (de) * | 1986-01-25 | 1987-07-30 | Hoechst Ag | Halbacetale von glyoxylsaeureestern sowie verfahren zur isolierung von glyoxylsaeureestern |
US4820385A (en) * | 1988-02-18 | 1989-04-11 | Monsanto Company | Purification of alkyl glyoxylate in a continuous column by azeotropic distillation |
US4867849A (en) * | 1988-07-25 | 1989-09-19 | Cova Dario R | Purification of alkyl glyoxylate |
US4952291A (en) * | 1989-12-06 | 1990-08-28 | E. I. Du Pont De Nemours And Company | Process for the purification of aldehydes |
US5217582A (en) * | 1990-06-20 | 1993-06-08 | E. I. Du Pont De Nemours And Company | Process for the isolation of alkyl glyoxylate |
JP3150909B2 (ja) * | 1996-09-05 | 2001-03-26 | 株式会社日本触媒 | グリオキシル酸エステル類の精製方法 |
US9114328B2 (en) | 2012-05-16 | 2015-08-25 | Eastman Chemical Company | Reactive distillation of a carboxylic acid and a glycol |
US9040748B2 (en) | 2012-06-08 | 2015-05-26 | Eastman Chemical Company | Hydrocarboxylation of aqueous formaldehyde using a dehydrating recycle stream to decrease water concentration |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1614195A (en) * | 1923-03-05 | 1927-01-11 | Firm Of C H Boehringer & Sohn | Process for the manufacture of esters of oxy-acids |
FR1575909A (de) * | 1968-06-12 | 1969-07-25 | ||
DE2232352B2 (de) * | 1972-07-01 | 1976-12-23 | Basf Ag, 6700 Ludwigshafen | Verfahren zur gewinnung von glyoxylsaeure bzw. ihres natriumsalzes |
IT1027410B (it) * | 1974-02-25 | 1978-11-20 | Degussa | Procedimento continuc per la produzione di glicide |
DE2904775C2 (de) * | 1979-02-08 | 1985-03-21 | Hoechst Ag, 6230 Frankfurt | Verfahren zur Herstellung von Glyoxylsäureestern |
JPS58153575A (ja) * | 1982-03-04 | 1983-09-12 | Daicel Chem Ind Ltd | 塩化水素の除去方法 |
-
1983
- 1983-10-06 US US06/539,506 patent/US4502923A/en not_active Expired - Lifetime
-
1984
- 1984-10-05 DE DE8484870142T patent/DE3464133D1/de not_active Expired
- 1984-10-05 AT AT84870142T patent/ATE27697T1/de not_active IP Right Cessation
- 1984-10-05 CA CA000464831A patent/CA1195285A/en not_active Expired
- 1984-10-05 EP EP84870142A patent/EP0140866B1/de not_active Expired
- 1984-10-05 JP JP59208461A patent/JPS6097936A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
EP0140866B1 (de) | 1987-06-10 |
US4502923A (en) | 1985-03-05 |
CA1195285A (en) | 1985-10-15 |
EP0140866A1 (de) | 1985-05-08 |
JPH0528694B2 (de) | 1993-04-27 |
JPS6097936A (ja) | 1985-05-31 |
DE3464133D1 (en) | 1987-07-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
UEP | Publication of translation of european patent specification | ||
REN | Ceased due to non-payment of the annual fee |