DK549485D0 - PROCEDURE FOR THE PREPARATION OF N-VINYL FORMAMIDE - Google Patents
PROCEDURE FOR THE PREPARATION OF N-VINYL FORMAMIDEInfo
- Publication number
- DK549485D0 DK549485D0 DK549485A DK549485A DK549485D0 DK 549485 D0 DK549485 D0 DK 549485D0 DK 549485 A DK549485 A DK 549485A DK 549485 A DK549485 A DK 549485A DK 549485 D0 DK549485 D0 DK 549485D0
- Authority
- DK
- Denmark
- Prior art keywords
- hydrogen cyanide
- preparation
- pressure
- mbar
- isolated
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C231/00—Preparation of carboxylic acid amides
- C07C231/06—Preparation of carboxylic acid amides from nitriles by transformation of cyano groups into carboxamide groups
Abstract
1. A process for the preparation of N-vinylformamide of the formula CH2 =CH-NH-CHO (I) by pyrolysis of formylalaninenitrile of the formula see diagramm : EP0184074,P6,F1 in the presence of a solid as a catalyst under reduced pressure, at from 250 to 650 degrees C and with cooling of the pyrolysis products, which essentially consist of I and hydrogen cyanide, likewise under reduced pressure and with isolation of I, wherein the pyrolysis products are cooled to a temperature of from 200 to -10 degree C under from 10 to 150 mbar so that substantial fractionation into condensed I and gaseous hydrogen cyanide takes place, I is isolated from the condensate, and the gaseous hydrogen cyanide which has not been separated off is then subjected to chemisorption with about an equimolar amount of acetaldehyde at from -20 to +30 degrees C under from 5 to 140 mbar with formation of lactonitrile, and the latter is isolated after the pressure has been brought to atmosphère pressure.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843443463 DE3443463A1 (en) | 1984-11-29 | 1984-11-29 | METHOD FOR PRODUCING N-VINYLFORMAMIDE |
Publications (2)
Publication Number | Publication Date |
---|---|
DK549485D0 true DK549485D0 (en) | 1985-11-28 |
DK549485A DK549485A (en) | 1986-05-30 |
Family
ID=6251421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK549485A DK549485A (en) | 1984-11-29 | 1985-11-28 | PROCEDURE FOR THE PREPARATION OF N-VINYL FORMAMIDE |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0184074B1 (en) |
JP (1) | JPS61134359A (en) |
AT (1) | ATE43334T1 (en) |
DE (2) | DE3443463A1 (en) |
DK (1) | DK549485A (en) |
ES (1) | ES8606252A1 (en) |
FI (1) | FI85137C (en) |
NO (1) | NO162963C (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3603450A1 (en) * | 1986-02-05 | 1987-08-06 | Basf Ag | METHOD FOR PURIFYING N-VINYLFORMAMIDE |
US4906777A (en) * | 1988-10-19 | 1990-03-06 | Air Products And Chemicals, Inc. | Synthesis of ethylidene bis-formamide using formic acid |
US4968841A (en) * | 1989-11-14 | 1990-11-06 | Air Products And Chemicals, Inc. | Synthesis of ethylidene bisformamide from vinyl acetate |
US5023375A (en) * | 1990-01-17 | 1991-06-11 | Air Products And Chemicals, Inc. | Process for the synthesis of amides from vinyl acetate |
DE4030380A1 (en) * | 1990-09-26 | 1992-04-02 | Basf Ag | ANIONICALLY POLYMERIZED N-VINYLFORMAMIDE AND METHOD FOR PRODUCING THE SAME |
DE4428901A1 (en) * | 1994-08-19 | 1996-02-22 | Basf Ag | Process for the preparation of N-alkenylcarboxamides |
US5527963A (en) * | 1994-10-16 | 1996-06-18 | Mitsubishi Chemical Corporation | Production of N-vinylformamide |
DE4438366A1 (en) * | 1994-10-27 | 1996-05-02 | Basf Ag | Process for the preparation of N-alkenylcarboxamides |
US5935896A (en) * | 1996-05-02 | 1999-08-10 | Basf Aktiengesellschaft | Catalyst supports and catalysts for dehydrocyanation reactions and processes for producing them |
US5951828A (en) * | 1996-05-10 | 1999-09-14 | Basf Aktiengesellschaft | Continuous distillation of thermolabile monomers |
US7026511B2 (en) * | 2002-08-30 | 2006-04-11 | University Of Pittsburgh | Synthesis of N-vinylformamide |
US8349090B2 (en) | 2008-10-20 | 2013-01-08 | Basf Se | Process for removing carbonaceous deposits on surfaces of catalysts and plant parts |
EP2376426B1 (en) * | 2008-12-15 | 2014-09-24 | Basf Se | Method for producing n-vinylcarboxamides |
CA2943935C (en) | 2014-04-08 | 2019-04-30 | Mitsubishi Rayon Co., Ltd. | Method for producing vinylamine unit-containing polymer and polymerization product |
US10696622B2 (en) | 2016-08-29 | 2020-06-30 | Eastman Chemical Company | Synthesis of N-vinyl carboxylic acid amides |
WO2018070163A1 (en) * | 2016-10-11 | 2018-04-19 | 昭和電工株式会社 | Production method for lactonitrile-containing liquid, and lactonitrile-containing liquid |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1014094B (en) * | 1956-05-18 | 1957-08-22 | Basf Ag | Process for the preparation of cyanohydrins |
DE1228246B (en) * | 1965-03-06 | 1966-11-10 | Bayer Ag | Process for the preparation of derivatives of N-acylvinylamine |
BE757107A (en) * | 1969-10-06 | 1971-04-06 | Basf Ag | PROCESS FOR PREPARING ALPHA-N-FORMYLAMINO-ACID DERIVATIVES |
-
1984
- 1984-11-29 DE DE19843443463 patent/DE3443463A1/en not_active Withdrawn
-
1985
- 1985-11-21 EP EP85114755A patent/EP0184074B1/en not_active Expired
- 1985-11-21 DE DE8585114755T patent/DE3570431D1/en not_active Expired
- 1985-11-21 AT AT85114755T patent/ATE43334T1/en not_active IP Right Cessation
- 1985-11-22 FI FI854623A patent/FI85137C/en not_active IP Right Cessation
- 1985-11-27 JP JP60265178A patent/JPS61134359A/en active Granted
- 1985-11-28 NO NO854767A patent/NO162963C/en unknown
- 1985-11-28 DK DK549485A patent/DK549485A/en not_active Application Discontinuation
- 1985-11-28 ES ES549386A patent/ES8606252A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS61134359A (en) | 1986-06-21 |
FI854623A0 (en) | 1985-11-22 |
FI854623A (en) | 1986-05-30 |
NO854767L (en) | 1986-05-30 |
DE3443463A1 (en) | 1986-05-28 |
DE3570431D1 (en) | 1989-06-29 |
ATE43334T1 (en) | 1989-06-15 |
DK549485A (en) | 1986-05-30 |
EP0184074B1 (en) | 1989-05-24 |
ES549386A0 (en) | 1986-04-16 |
NO162963B (en) | 1989-12-04 |
FI85137B (en) | 1991-11-29 |
ES8606252A1 (en) | 1986-04-16 |
EP0184074A1 (en) | 1986-06-11 |
JPH0511104B2 (en) | 1993-02-12 |
FI85137C (en) | 1992-03-10 |
NO162963C (en) | 1990-03-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AHS | Application shelved for other reasons than non-payment |