DE1668767C3 - Process for the hydrodimerization of acrylic acid derivatives - Google Patents
Process for the hydrodimerization of acrylic acid derivativesInfo
- Publication number
- DE1668767C3 DE1668767C3 DE1668767A DE1668767A DE1668767C3 DE 1668767 C3 DE1668767 C3 DE 1668767C3 DE 1668767 A DE1668767 A DE 1668767A DE 1668767 A DE1668767 A DE 1668767A DE 1668767 C3 DE1668767 C3 DE 1668767C3
- Authority
- DE
- Germany
- Prior art keywords
- ammonia
- reaction
- derivatives
- acrylic acid
- hydrodimerization
- 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
Links
- 238000000034 method Methods 0.000 title claims description 13
- 150000001252 acrylic acid derivatives Chemical class 0.000 title claims 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical group N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 45
- 229910021529 ammonia Inorganic materials 0.000 claims description 20
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 15
- 229910000497 Amalgam Inorganic materials 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 239000000047 product Substances 0.000 claims description 11
- 239000012429 reaction media Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 7
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 6
- -1 Amine salt Chemical class 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 235000019270 ammonium chloride Nutrition 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 3
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- 239000007795 chemical reaction product Substances 0.000 claims description 2
- 238000004821 distillation Methods 0.000 claims description 2
- 239000011541 reaction mixture Substances 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims 3
- 239000003638 chemical reducing agent Substances 0.000 claims 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 claims 2
- ATHHXGZTWNVVOU-UHFFFAOYSA-N N-methylformamide Chemical compound CNC=O ATHHXGZTWNVVOU-UHFFFAOYSA-N 0.000 claims 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims 2
- 125000005250 alkyl acrylate group Chemical group 0.000 claims 2
- 150000003863 ammonium salts Chemical class 0.000 claims 2
- 239000012736 aqueous medium Substances 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000000178 monomer Substances 0.000 claims 2
- 150000003839 salts Chemical class 0.000 claims 2
- 239000007787 solid Substances 0.000 claims 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical group [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims 1
- 239000004952 Polyamide Substances 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 235000011037 adipic acid Nutrition 0.000 claims 1
- 239000001361 adipic acid Substances 0.000 claims 1
- 150000001279 adipic acids Chemical class 0.000 claims 1
- 150000001408 amides Chemical class 0.000 claims 1
- 150000001412 amines Chemical class 0.000 claims 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims 1
- 235000011130 ammonium sulphate Nutrition 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000006227 byproduct Substances 0.000 claims 1
- LYKJEJVAXSGWAJ-UHFFFAOYSA-N compactone Natural products CC1(C)CCCC2(C)C1CC(=O)C3(O)CC(C)(CCC23)C=C LYKJEJVAXSGWAJ-UHFFFAOYSA-N 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000001704 evaporation Methods 0.000 claims 1
- 230000008020 evaporation Effects 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 238000005984 hydrogenation reaction Methods 0.000 claims 1
- 239000012535 impurity Substances 0.000 claims 1
- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 claims 1
- 239000004033 plastic Substances 0.000 claims 1
- 229920003023 plastic Polymers 0.000 claims 1
- 229920002647 polyamide Polymers 0.000 claims 1
- 150000005599 propionic acid derivatives Chemical class 0.000 claims 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims 1
- 239000000376 reactant Substances 0.000 claims 1
- 238000011084 recovery Methods 0.000 claims 1
- 230000003252 repetitive effect Effects 0.000 claims 1
- CESKLHVYGRFMFP-UHFFFAOYSA-N sulfonmethane Chemical compound CCS(=O)(=O)C(C)(C)S(=O)(=O)CC CESKLHVYGRFMFP-UHFFFAOYSA-N 0.000 claims 1
- ILWRPSCZWQJDMK-UHFFFAOYSA-N triethylazanium;chloride Chemical compound Cl.CCN(CC)CC ILWRPSCZWQJDMK-UHFFFAOYSA-N 0.000 claims 1
- 238000009834 vaporization Methods 0.000 claims 1
- 230000008016 vaporization Effects 0.000 claims 1
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 15
- FVSKHRXBFJPNKK-UHFFFAOYSA-N propionitrile Chemical compound CCC#N FVSKHRXBFJPNKK-UHFFFAOYSA-N 0.000 description 11
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 10
- BTGRAWJCKBQKAO-UHFFFAOYSA-N adiponitrile Chemical compound N#CCCCCC#N BTGRAWJCKBQKAO-UHFFFAOYSA-N 0.000 description 10
- 229910052708 sodium Inorganic materials 0.000 description 10
- 239000011734 sodium Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- MJGFBOZCAJSGQW-UHFFFAOYSA-N mercury sodium Chemical compound [Na].[Hg] MJGFBOZCAJSGQW-UHFFFAOYSA-N 0.000 description 7
- 229910001023 sodium amalgam Inorganic materials 0.000 description 7
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- 238000004508 fractional distillation Methods 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 2
- 238000004587 chromatography analysis Methods 0.000 description 2
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 2
- 229910000567 Amalgam (chemistry) Inorganic materials 0.000 description 1
- 101000927799 Homo sapiens Rho guanine nucleotide exchange factor 6 Proteins 0.000 description 1
- 102100033202 Rho guanine nucleotide exchange factor 6 Human genes 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- GGNALUCSASGNCK-UHFFFAOYSA-N carbon dioxide;propan-2-ol Chemical compound O=C=O.CC(C)O GGNALUCSASGNCK-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- QHDRKFYEGYYIIK-UHFFFAOYSA-N isovaleronitrile Chemical compound CC(C)CC#N QHDRKFYEGYYIIK-UHFFFAOYSA-N 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- FOBREYJMSUUGLF-UHFFFAOYSA-N n,n-dimethylmethanamine;hypochlorous acid Chemical compound ClO.CN(C)C FOBREYJMSUUGLF-UHFFFAOYSA-N 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/30—Preparation of carboxylic acid nitriles by reactions not involving the formation of cyano groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Das erfindungsgemftße Verfahren bietet den großen Vorteil, ein wirtschaftliches Reaktionsmilieu unter Erzielung befriedigender Ausbeuten einzusetzen.The method of the present invention offers the great Advantage of using an economical reaction medium while achieving satisfactory yields.
Pin anderer Vorteil des erfindungsgemäßen Verfahrens besteht darin, daß eine Kontrolle des pH nicht mehr notwendig und daß der Zusatz eines neutralisierenden Mittels überflüssig ist. Das Reaktionsmilieu ist ja alkalisch von Anfang der Reaktion an, und die zusätzliche Menge an während der Reaktion gebildetem freien Alkali ist unbedeutend. Another advantage of the method according to the invention is that it is no longer necessary to control the pH and that the addition of a neutralizing agent is superfluous. The reaction medium is alkaline from the start of the reaction, and the additional amount of free alkali formed during the reaction is insignificant.
Unter den Alkaliamalgamen, welche man bei dem erfindungsgemäßen Verfahren verwenden kann, werden die Amalgame von Natrium und Kalium bevorzugt, weil sie am leichtesten verfügbar sind. Die Konzentration des Alkalimetalls im Amalgam ist nicht wesentlich und kann in weiten Grenzen schwanken. Vorzugsweise liegt sie zwischen 0,01 und 0,5 Gewichtsprozent. Among the alkali amalgams which can be used in the method according to the invention are the amalgams of sodium and potassium are preferred because they are the most readily available. The concentration of the alkali metal in the amalgam is not essential and can vary within wide limits. It is preferably between 0.01 and 0.5 percent by weight.
Die folgenden Beispiele erläutern die Erfindung, ohne sie zu beschränken.The following examples illustrate the invention without restricting it.
Man kühlt eine Lösung von 10 g Acrylnitril und von 90 g Ammoniak in 30 g Wasser auf —30 C in einem Isopropanol-Trockeneisbad ab. In einem anderen Behälter kühlt man 2 kg Natriumamalgam (enthaltend 0,3 Gewichtsprozent Natrium) auf die gleiche Temperatur ab. Man gießt die Lösung über das Amalgam unter Aufrechterhalten der Temperatur auf —30 C, und man rührt schwach während 5 Minuten. Man trennt das Amalgam ab, destilliert das Ammoniak ab, verdünnt die Lösung mit Wasser und extrahiert mit Methylenchlorid. Der MethylenchSridextrakt enthält das Reaktionsprodukt. Die chromatographische Analyse in Gasphase zeigt an, daß das Produkt aus 85% Adiponitrii und 5% Propionitril besteht, berechnet in Bezug auf das eingesetzte Acrylnitril.A solution of 10 g of acrylonitrile and 90 g of ammonia in 30 g of water is cooled to -30 ° C. in one Isopropanol dry ice bath. Another container is used to cool 2 kg of sodium amalgam (containing 0.3 percent by weight sodium) to the same temperature. The solution is poured over the amalgam while maintaining the temperature at -30 C, and stir gently for 5 minutes. The amalgam is separated off, the ammonia is distilled off, dilute the solution with water and extract with methylene chloride. The methylene ride extract contains the reaction product. The chromatographic analysis in gas phase indicates that the product of 85% Adiponitrii and 5% propionitrile, calculated in relation to the acrylonitrile used.
Der Überführungsgrad des Natriums, bezogen auf Adiponitrii und Pripionitril ist 92%.The degree of conversion of sodium, based on adiponitrile and pripionitrile, is 92%.
Man gewinnt das Adiponitrii und das Propionitril getrennt aus der Lösung in Methylenchlorid durch fraktionierte Destillation. Das Methylenchlorid und das Propionitril destillieren unter atmosphärischem Druck. Anschließend destilliert man das Adiponitrii Unter verringertem Druck ab. Siedepunkt 182C/ 20 mm Hg.The adiponitrile and the propionitrile are recovered separately from the solution in methylene chloride fractional distillation. The methylene chloride and propionitrile distill under atmospheric Pressure. The adiponitrile is then distilled off under reduced pressure. Boiling point 182C / 20 mm Hg.
Man behandelt eine Lösung von 10 g Acrylnitril und 100 g Ammoniak in 50 g Wasser mit Natriumamalgam bei —201C, wie in Beispiel 1 beschrieben. Das erhaltene Produkt besteht aus 72% Adiponitrii und 11% Propionitril, berechnet in Bezug auf das eingesetzte Acrylnitril, und bestimmt wie in Beispiel 1.A solution was treated by 10 g acrylonitrile and 100 g of ammonia in 50 g water with sodium amalgam 1 at -20 C as described in Example. 1 The product obtained consists of 72% adiponitrile and 11% propionitrile, calculated in relation to the acrylonitrile used, and determined as in Example 1.
Der Überführungsgrad des Natriums ist 89%. Die Gewinnung des Produkts unter Ausgehen von ier Lösung in Methylenchlorid erfolgt wie in Beispiel I.The degree of conversion of sodium is 89%. Obtaining the product starting from ier solution in methylene chloride is carried out as in Example I.
Man führt 2,5 kg Natriumamalgam (enthaltend 0,3 Gewichtsprozent Natrium) in einen Behälter mit dicken Wänden und 10 g Acrylnitril und 50 g Wasser in einen anderen Behälter ein, der mit dem ersten verbunden ist. Man schließt den zweiten Behälter an ein Evakuierungssystem und gleichfalls mittels eines 6j Steuerventils an eine Ammoniakquelle an. Man kühlt den das Acrylnitril und Wasser enthaltenden Behälter in flüssiger Luft ab und evakuiert. Man öffnet das Steuerventil, welches zur Ammoniakquelle führt, und man destilliert 50 g Ammoniak in den kalten Behälter hinein. Man macht den Behälter dicht und trennt ihn vorn Evakuierungssystem und der Ammoniakquelle ab. Man führt die zwei Behälter in ein Bad aus Eis ein und mischt ihren Inhalt, wenn die Temperatur Q"C in jedem Behälter erreicht. Man läßt die Reaktion sich fortsetzen während 5 Minuten unter schwachem Rühren. Man fährt fort und bestimmt die Ergebnisse wie in Beispiel I. Das Produkt besteht aus 50% Adiponitrii und 21% Propionitril, berechnet in Bezug auf das eingesetzte Acrylnitril.2.5 kg of sodium amalgam (containing 0.3% by weight of sodium) are placed in a thick-walled container and 10 g of acrylonitrile and 50 g of water are placed in another container connected to the first. The second container is connected to an evacuation system and also to a source of ammonia by means of a control valve. The container containing the acrylonitrile and water is cooled in liquid air and evacuated. The control valve leading to the ammonia source is opened and 50 g of ammonia are distilled into the cold container. The container is sealed and separated from the evacuation system and the ammonia source. The two containers are placed in an ice bath and their contents are mixed when the temperature in each container reaches Q "C. The reaction is allowed to continue for 5 minutes with gentle stirring. The procedure is followed and the results are determined as in Example I. The product consists of 50% adiponitrile and 21% propionitrile, calculated in relation to the acrylonitrile used.
Mati läßt sich umsetzen eine Lösung von 10 g l-Methylacrylnitril und 90 g Ammoniak in 30 g Wasser während 15 Minuten mit 2 kg Natriumamalgam, enthaltend 0,3 Gewichtsprozent Natrium. Man trennt das Amalgam ab, extrahiert eine Probe mit Methylenchlorid und analysiert chromatographisch in Gasphase. Dies zeigt an, daß das Produkt 70% Dimethyladiponitril und 10% Isobutylnitril enthält, berechnet in Bezug auf das eingesetzte l-methylacrylnitril.Mati can implement a solution of 10 g 1-methylacrylonitrile and 90 g ammonia in 30 g water for 15 minutes with 2 kg of sodium amalgam containing 0.3 percent by weight sodium. One separates remove the amalgam, extract a sample with methylene chloride and analyze it by chromatography in the gas phase. This indicates that the product contains 70% dimethyl adiponitrile and 10% isobutyl nitrile, calculated in relation to the l-methylacrylonitrile used.
Man'trennt das Amalgam ab, beseitigt das Ammoniak aus der wäßrigen Lösung des Reaktionsmilieus durch Destillation und extrahiert den Rückstand mit Methylench.'orid. Man gewinnt t'ie Produkte aus dem Extrakt durcii eine fraktionierte Destillation. Siedepunkt des Dimethyladiponitriis: 110 C/l mm Hg.The amalgam is separated off and the ammonia is eliminated from the aqueous solution of the reaction medium by distillation and extract the residue with Methylench.'orid. One wins t'ie products from fractional distillation of the extract. Boiling point of Dimethyladiponitriis: 110 C / l mm Hg.
Man läßt sich umsetzen eine Lösung von 10 g Acrylnitril und 100 g Ammoniak in 30 g Wasser mit 2,5 kg Kaliumamalgam (enthaltend 0,5 Gewichtsprozent Kalium). Man fährt fort wie in Beispiel 1 beschrieben. Das Produkt besteht aus 83 % Adiponitrii und 5 % Propionitril, berechnet in Bezug auf das eingesetzte Acrylnitril.A solution of 10 g of acrylonitrile and 100 g of ammonia in 30 g of water with 2.5 kg can be reacted Potassium amalgam (containing 0.5 percent by weight potassium). The procedure described in Example 1 is continued. The product consists of 83% adiponitrile and 5% propionitrile, calculated in relation to that used Acrylonitrile.
Der Überführungsgrad des Kaliums ist 87%.The degree of potassium conversion is 87%.
In einem Kältebad hält man auf —30°C einen Behälter mit drei Hälsen und einem Fassungsvermögen von 500 ml, versehen mit einem Rührer aus »TEFLON« einem Retrogradateur (1 cold finger) und einem Trichter mit Hahn, ausgerüstet mit einem Kühlmittel.A container is kept at -30 ° C in a cold bath with three necks and a capacity of 500 ml, equipped with a stirrer made of »TEFLON« a retrogradateur (1 cold finger) and a funnel with a tap, equipped with a coolant.
Man führt in diesen Behälter eine Lösung von 10 g Acrylnitril und 11 g Ammoniumchlorid in 200 ml flüssigem Ammoniak ein. Man kühlt 2 kg Natriumamalgam (enthaltend 0,3 Gewichtsprozent Natrium) auf —30° C in dem Trichter ab und läßt das Amalgam tropfenweise unter schwachem Rühren und unter Aufrechterhalten der Reaktionstemperatur auf —30 C in den Behälter fallen. Man trennt dann das erschöpfte Amalgam aus der Reaktionsmischung ab und unterwirft diese einer fraktionierten Destillation unter atmosphärischem Druck. Das Ammoniak destilliert zuerst ab und anschließend das Propionitril. Am Ende destilliert das Adiponitrii unter verringertem Druck (182°C/20mmHg).A solution of 10 g of acrylonitrile and 11 g of ammonium chloride in 200 ml is introduced into this container liquid ammonia. 2 kg of sodium amalgam (containing 0.3 percent by weight sodium) are cooled to -30 ° C in the funnel and allow the amalgam dropwise with gentle stirring and while maintaining the reaction temperature to -30 C in the container. One then separates the exhausted Amalgam from the reaction mixture and subjects it to a fractional distillation atmospheric pressure. The ammonia is first distilled off and then the propionitrile. At the end distilled the Adiponitrii under reduced pressure (182 ° C / 20mmHg).
Das erhaltene Produkt besteht aus 9 g Adiponitrii und 0,5 g Propionitril, und die Ausbeuten erhöben sich auf 90% Adiponitrii und 5% Propionitril, berechnet in Bezug auf das Gewicht des eingesetzten Acrylnitrils. Der Überführungsgrad des Natriums, bezogen auf das Adiponitrii und Propionitril, ist 90%.The product obtained consists of 9 g of adiponitrile and 0.5 g of propionitrile, and the yields increase based on 90% adiponitrile and 5% propionitrile, calculated in relation to the weight of the acrylonitrile used. The degree of conversion of sodium, based on the adiponitrile and propionitrile, is 90%.
Man behandelt eine Lösung von 10 g Acrylnitril und 30 g Trimethylaminchlorhydrat in 200 ml flüssigem Ammoniak mit Natriumamalgam, wie in Beipsiel 6 beschrieben. Man trennt die Produkte wie in Beispiel 6 ab. Die Ausbeuten belaufen sich auf 85% Adiponitril und 9% Propionitril, berechnet in Bezug auf das Gewicht des eingesetzten Acrylnitril. Der Überführungsgrad des Natriums ist 95%. A solution of 10 g of acrylonitrile and 30 g of trimethylamine chlorohydrate in 200 ml of liquid is treated Ammonia with sodium amalgam, as described in Example 6. The products are separated as in Example 6 away. The yields are 85% adiponitrile and 9% propionitrile, calculated on a weight basis of the acrylonitrile used. The degree of conversion of sodium is 95%.
Man läßt sich umsetzen eine Mischung von,10 g Äthylacrylat, 6 g Ammoniumchlond und 200 mlA mixture of 10 g can be reacted Ethyl acrylate, 6 g ammonium chloride and 200 ml
flüssigem Ammoniak mit Natriumamalgam .n derselben Weise, wie in Beispiel 6 beschrieben. Man trennt die Produkte wie in Beispiel 6 ab. Die Ausbeuten belaufen sich auf 72% Diäthylad.pat und 6/0 Athylpropionat, berechnet in Bezug auf das eingesetzteliquid ammonia with sodium amalgam in the same way as described in example 6. The products are separated off as in Example 6. The yields amount to 72% and 6 Diäthylad.pat / 0 Athylpropionat, calculated with respect to the inserted
Athyiacrylat. Der Überführungsgrad des Natriums ist 94%.Ethyl acrylate. Degree of transfer of sodium is 94%.
Claims (2)
Alkylacrylaten, um die entsprechenden Derivate der Gemäß einer anderen Ausführungsform der Erfin-The invention relates to the hydrodimeric -10 C maintains, you can basically use open sation of acrylic acid derivatives, selected from containers and work under atmospheric acrylonitrile, substituted or unsubstituted by pressure. On the other hand, a lower alkyl radical should be used for a higher temperature and closed containers should be used below the lower temperature.
Alkyl acrylates, to the corresponding derivatives of According to another embodiment of the invention
amiden und im allgemeinen von Polyamidkunststoffen. 30 In der Praxis eignen sich alle Salze von Ammonium Die Hydrodimerisation von Derivaten der Acryl- und Aminen für diese Ausführungsform. Jedoch wersäure ist bekannt. Man kann die bekannten oder bisher den die einfachen anorganischen Ammoniumsalze, tatsächlich benutzten Verfahren in zwei Gruppen ein- insbesondere das Ammoniumchlorid und -sulfat bevorteilen: zugt, wenn man in technischem Ausmaß nach dieserObtain adipic acid. According to the invention, the ammoniacal reaction medium is the water-containing derivatives of adipic acid are usable free and consists of liquid ammonia, in which reactants are dissolved in the production of fibers from poly, an ammonium or amine salt,
amides and, in general, of polyamide plastics. In practice, all salts of ammonium are suitable for this embodiment. The hydrodimerization of derivatives of acrylic and amines. However, eric acid is known. The known or hitherto the simple inorganic ammonium salts, actually used processes can be favored in two groups, especially ammonium chloride and ammonium sulfate: admitted, if one adopts this on an industrial scale
erfordert die Wiedergewinnung oft die wiederholte Diese Ausführungsform erfordert infolgedessen die Destillation von Flüssigkeiten mit hohem Siedepunkt. Verwendung einer einfacheren und kompakteren Hiermit ist eine geringe Zersetzung dieser Verbindun- Apparatur als das Verfahren gemäß der ersten Ausgen verbunden und infolgedessen die Bildung uner- führungsweise,
wünschter Verunreinigungen. 60 Bekanntlich verläuft die Hydrodimerisation der The known processes for hydrodimerization The use of liquid ammonia offers the acrylic acid derivatives by means of an alkali amalgam great technical advantages, because it is sufficient, at the end, all are carried out in an aqueous medium, which of the reaction evaporates the reaction medium into one and / or the other in solution let the following. The residue contains the reaction products contains: dimethyl sulfoxide, sulfonal, 45 and a little unreacted starting product formamide, methylformamide, dimethylformamide, methene mixed with a deposit of solid salt, thylacetamide, dimethylacetamide and various which can be removed mechanically. It is ocular quaternary ammonium salts. The disadvantage of all these apparently, that one is doing a sufficiently unknown process, is that the production has to work at low temperatures so that an aqueous medium practically does not use the relative vaporization of ammonia during moderately complicated compounds in relatively the reaction . Because the evaporation point requires increased proportions. Even in the event that the ammonia is recovered at the end of the reaction at atmospheric pressure -35 ° C, it is preferred to recover at a temperature close to -30 ° C. You can of course always have some loss with you. Moreover, 55 recover the vaporized ammonia,
recovery often requires repetitive operation. This embodiment therefore requires the distillation of high boiling point liquids. Use of a simpler and more compact one.
desired impurities. 60 As is well known, the hydrodimerization of
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL2634366A IL26343A (en) | 1966-08-16 | 1966-08-16 | Process for the hydrodimerization of acrylic acid derivatives |
| IL2708966 | 1966-12-19 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE1668767A1 DE1668767A1 (en) | 1971-01-28 |
| DE1668767B2 DE1668767B2 (en) | 1974-05-30 |
| DE1668767C3 true DE1668767C3 (en) | 1975-01-30 |
Family
ID=26320427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1668767A Expired DE1668767C3 (en) | 1966-08-16 | 1967-08-16 | Process for the hydrodimerization of acrylic acid derivatives |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US3519674A (en) |
| AT (1) | AT272300B (en) |
| BE (1) | BE702635A (en) |
| CH (1) | CH468960A (en) |
| CS (1) | CS149414B2 (en) |
| DE (1) | DE1668767C3 (en) |
| ES (1) | ES344061A1 (en) |
| GB (1) | GB1152104A (en) |
| LU (1) | LU54297A1 (en) |
| NL (1) | NL6710958A (en) |
| NO (1) | NO120521B (en) |
| SE (1) | SE326699B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200418888A (en) * | 2003-01-23 | 2004-10-01 | Teijin Ltd | Polymer for carbon fiber precursor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3193574A (en) * | 1960-05-08 | 1965-07-06 | Katchalsky Aharon | Process for the preparation of adiponitrile by dimerization of acrylonitrile |
| GB1157441A (en) * | 1964-06-02 | 1969-07-09 | Ici Ltd | Reductive Dimerisation of Unsaturated Nitriles |
-
1967
- 1967-06-28 SE SE09501/67*A patent/SE326699B/xx unknown
- 1967-06-29 NO NO168835A patent/NO120521B/no unknown
- 1967-07-05 AT AT624067A patent/AT272300B/en active
- 1967-07-21 US US655008A patent/US3519674A/en not_active Expired - Lifetime
- 1967-08-09 NL NL6710958A patent/NL6710958A/xx unknown
- 1967-08-11 LU LU54297D patent/LU54297A1/xx unknown
- 1967-08-12 ES ES344061A patent/ES344061A1/en not_active Expired
- 1967-08-14 GB GB37173/67A patent/GB1152104A/en not_active Expired
- 1967-08-14 BE BE702635D patent/BE702635A/xx unknown
- 1967-08-14 CH CH1140867A patent/CH468960A/en unknown
- 1967-08-16 CS CS5879A patent/CS149414B2/cs unknown
- 1967-08-16 DE DE1668767A patent/DE1668767C3/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1668767A1 (en) | 1971-01-28 |
| ES344061A1 (en) | 1968-11-01 |
| BE702635A (en) | 1968-02-14 |
| NO120521B (en) | 1970-11-02 |
| DE1668767B2 (en) | 1974-05-30 |
| SE326699B (en) | 1970-08-03 |
| NL6710958A (en) | 1968-02-19 |
| US3519674A (en) | 1970-07-07 |
| CH468960A (en) | 1969-02-28 |
| AT272300B (en) | 1969-07-10 |
| GB1152104A (en) | 1969-05-14 |
| CS149414B2 (en) | 1973-07-05 |
| LU54297A1 (en) | 1968-03-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) |