DD107013A5 - - Google Patents
Info
- Publication number
- DD107013A5 DD107013A5 DD174202*A DD17420273A DD107013A5 DD 107013 A5 DD107013 A5 DD 107013A5 DD 17420273 A DD17420273 A DD 17420273A DD 107013 A5 DD107013 A5 DD 107013A5
- Authority
- DD
- German Democratic Republic
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
- C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
- C07C29/84—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation by extractive distillation
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- 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
- B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
- B01D3/40—Extractive 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
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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
- Y10S203/10—Vinyl acetate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722252276 DE2252276C2 (de) | 1972-10-25 | 1972-10-25 | Verfahren zur gewinnung von vinylacetat aus gemischen, die im wesentlichen vinylacetat und methanol und als verunreinigung methylacetat und acetaldehyd enthalten |
| DE19732342144 DE2342144C3 (de) | 1973-08-21 | Verfahren zur Gewinnung von Vinylacetat aus Gemischen, die im wesentlichen Vinylacetat und Methanol und als Verunreinigung Methylacetat und Acetaldehyd enthalten |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD107013A5 true DD107013A5 (en:Method) | 1974-07-12 |
Family
ID=25764004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD174202*A DD107013A5 (en:Method) | 1972-10-25 | 1973-10-22 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3855078A (en:Method) |
| JP (1) | JPS5738567B2 (en:Method) |
| DD (1) | DD107013A5 (en:Method) |
| ES (1) | ES419805A1 (en:Method) |
| FR (1) | FR2204609B1 (en:Method) |
| GB (1) | GB1419465A (en:Method) |
| IT (1) | IT998900B (en:Method) |
| NL (1) | NL185202C (en:Method) |
| SU (1) | SU584758A3 (en:Method) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4431838A (en) * | 1981-02-09 | 1984-02-14 | National Distillers And Chemical Corporation | Extractive distillation of alcohol-ester mixtures and transesterification |
| US4473444A (en) * | 1981-02-09 | 1984-09-25 | National Distillers And Chemical Corporation | Extractive distillation of alcohol-ester mixtures |
| US7550065B2 (en) * | 2005-04-21 | 2009-06-23 | Lyondell Chemical Technology, L.P. | Method for recovering solvents |
| CN101903171A (zh) * | 2007-12-21 | 2010-12-01 | 积水精细化工美国有限公司 | 制备低色值聚乙烯醇的方法 |
| CN109851499B (zh) * | 2018-12-24 | 2022-02-15 | 天津大学 | 一种利用共沸精馏分离醋酸乙烯酯中苯的方法及装置 |
| CN110028408A (zh) * | 2019-04-28 | 2019-07-19 | 青岛科技大学 | 一种部分热耦合萃取精馏分离乙酸乙酯-乙醇-水混合物的方法 |
| CN115093041B (zh) * | 2022-02-22 | 2024-02-13 | 杨自林 | 生产5-氨基-2-硝基三氟甲苯产生的工业废水的资源化处理方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2349807A (en) * | 1941-08-30 | 1944-05-30 | Carbide & Carbon Chem Corp | Recovery of vinyl acetate from solvent mixtures |
| US2575244A (en) * | 1948-09-08 | 1951-11-13 | Standard Oil Dev Co | Process for separating ketones from close-boiling mixtures |
| US2622060A (en) * | 1950-01-26 | 1952-12-16 | Celanese Corp | Purification of 1,2-propylene oxide |
| US3350417A (en) * | 1964-02-12 | 1967-10-31 | Monsanto Co | Production and recovery of propylene oxide by plural stage distillation and caustic addition |
| US3636087A (en) * | 1966-09-12 | 1972-01-18 | Atlantic Richfield Co | Vinyl acetate recovery process |
| US3616271A (en) * | 1968-10-25 | 1971-10-26 | Du Pont | Separation of chloroform and/or ethyl acetate from vinyl acetate by extractive distillation |
| US3551299A (en) * | 1968-12-18 | 1970-12-29 | Celanese Corp | Method of minimizing polymer formation during distillation of vinyl acetate by the addition of alphamethyl styrene |
| US3691021A (en) * | 1970-03-26 | 1972-09-12 | Nat Distillers Chem Corp | Process for purification of vinyl acetate by extractive distillation |
-
1973
- 1973-10-19 NL NLAANVRAGE7314426,A patent/NL185202C/xx not_active IP Right Cessation
- 1973-10-19 ES ES419805A patent/ES419805A1/es not_active Expired
- 1973-10-22 DD DD174202*A patent/DD107013A5/xx unknown
- 1973-10-23 IT IT30479/73A patent/IT998900B/it active
- 1973-10-23 GB GB4933373A patent/GB1419465A/en not_active Expired
- 1973-10-23 SU SU7301964146A patent/SU584758A3/ru active
- 1973-10-23 US US00408645A patent/US3855078A/en not_active Expired - Lifetime
- 1973-10-23 JP JP11859173A patent/JPS5738567B2/ja not_active Expired
- 1973-10-24 FR FR7337879A patent/FR2204609B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2204609A1 (en:Method) | 1974-05-24 |
| NL185202C (nl) | 1990-02-16 |
| ES419805A1 (es) | 1976-07-16 |
| SU584758A3 (ru) | 1977-12-15 |
| IT998900B (it) | 1976-02-20 |
| US3855078A (en) | 1974-12-17 |
| FR2204609B1 (en:Method) | 1977-08-12 |
| NL185202B (nl) | 1989-09-18 |
| NL7314426A (en:Method) | 1974-04-29 |
| JPS5738567B2 (en:Method) | 1982-08-16 |
| GB1419465A (en) | 1975-12-31 |
| JPS4975509A (en:Method) | 1974-07-20 |