CH295308A - Process for the production of a condensation product. - Google Patents
Process for the production of a condensation product.Info
- Publication number
- CH295308A CH295308A CH295308DA CH295308A CH 295308 A CH295308 A CH 295308A CH 295308D A CH295308D A CH 295308DA CH 295308 A CH295308 A CH 295308A
- Authority
- CH
- Switzerland
- Prior art keywords
- reaction
- carried out
- out under
- production
- condensation product
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000007859 condensation product Substances 0.000 title claims description 4
- 239000011541 reaction mixture Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000009833 condensation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- ALQSHHUCVQOPAS-UHFFFAOYSA-N Pentane-1,5-diol Chemical compound OCCCCCO ALQSHHUCVQOPAS-UHFFFAOYSA-N 0.000 claims description 3
- 239000007795 chemical reaction product Substances 0.000 claims description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- -1 alkali metal salts Chemical class 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010533 azeotropic distillation Methods 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- NVIFVTYDZMXWGX-UHFFFAOYSA-N sodium metaborate Chemical compound [Na+].[O-]B=O NVIFVTYDZMXWGX-UHFFFAOYSA-N 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/34—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung eines Kondensationsproduktes. Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Kondensa- tionsproduktes.
Dieses Verfahren ist, dadurch gekennzeich net, dass man Pentandiol-1.,5 in Gegenwart von mindestens einem alkalischen Kondensa tionsmittel bei Temperaturen oberhalb 15011C einer kondensierenden Behandlung unterwirft, wobei man dafür Sorge trägt, dass das entste hende Reaktionswasser ständig aus dem Reaktionsgemisch entfernt wird.
Hierbei kann im allgemeinen ohne An wendung von Druck gearbeitet werden, doch hat es sich in vereinzelten Fällen als notwen dig erwiesen, mit. ZTberdruck oder unter ver mindertem Druck zu arbeiten.
Als alkalische Kondensationsmittel bei der Umsetzung dienen z. B. Alkali- und Erd- alkalihydroxyde und -carbonate, andere alka lische Alkalisalze, wie Trinatriumorthophos- phat und Natriummetaborat, ferner Alkali und Erdalkalimetalle. In einzelnen Fällen hat es sieh als vorteilhaft herausgestellt, die Wir- kunD, der alkalischen Kondensationsmittel durch einen geringen Zusatz gewisser Me talle, z. B. von Zink oder Aluminium, zu ver stärken.
Das ständige Entfernen des sich bilden den Reaktionswassers aus dem Reaktions gemisch kann auf verschiedene Weise gesche hen. Beispielsweise kann das Wasser wäh- rend des Erhitzens der Un metzungsflüssigkeit im offenen Gefäss einfach abgedampft oder aus einem geschlossenen Gefäss fortlaufend abdestilliert werden. Ferner kann man sich der azeotropischen Destillation bedienen, wo bei der Ausgangsstoff des Verfahrens selbst als Schleppmittel dient und nach Trennun1 vom Wasser dem Reaktionsgemisch wieder zugeführt wird.
Oder man kann auch ein Schleppmittel in Gestalt eines organischen Lösungsmittels, das vom Reaktionsgemisch leicht durch Destillation getrennt werden kann, z. B. in Gestalf von Kohlenwasserstof- fen oder Gemischen derselben, zusetzen, das zusammen mit dem Reaktionswasser abdestil- liert. und nach Abscheidung des letzteren ebenfalls dem Reaktionsgemiseh wieder zii- geführt wird.
Das Verfahren ermöglicht es, Produkte verschiedener 1VIolekulargrösse herzustellen, welch letztere von der Kondensationsdauer abhängt. Vor, während oder nach der Kon densation lassen sich Füll- und Farbstoffe bekannter Art. zusetzen.
Das erhaltene Reaktionsprodukt ist ein viskoses Öl, das entweder für sich oder in Form seiner Derivate, z. B. seiner Ester mit anorganischen oder organischen Säuren oder seiner Äther mit Alkoholen, als Lackrohstoff oder als Weichmacher in der Kunststoff industrie, z. B. für Cellulosederivate, Ver wendung finden kann. <I>Beispiel:</I> 250 Gewiehtsteile Pentandiol-1,5 wer den mit 8 Gewichtsteilen Kaliuinhydro.xyd so lange zum Sieden erhitzt, bis die Tempe ratur des Reaktionsgemisches von anfangs 237 auf 280 C ansteigt.
Die Temperatur wird so eingestellt, dass das bei der Reaktion entstehende -Wasser abdestilliert, während die organischen Anteile dem Reaktions- gemiseh ständig wieder zugeführt werden.
Nach etwa 10 Stunden werden aus dem Reaktionsprodukt etwa 40% einer bei 135 /14 mm konstant siedenden Fraktion ab destilliert, die folgende Kennzahlen aufweist OH-Z: 340, %C: 78,0, % H :
11.32. Dieses Produkt, ein viskoses Öl, hat einen campher- ähnlichen Geruch und lässt sich durch Alkali- schmelze in eine süsslich riechende, gut. kri- stallisierende Säure überführen.
Process for the production of a condensation product. The present invention relates to a method for producing a condensation product.
This process is characterized in that 1,5-pentanediol is subjected to a condensing treatment in the presence of at least one alkaline condensation agent at temperatures above 15011C, whereby care is taken that the resulting water of reaction is constantly removed from the reaction mixture .
This can generally be done without applying pressure, but it has proven to be necessary in a few cases with. To work with overpressure or under reduced pressure.
As alkaline condensing agents in the implementation, z. B. alkali and alkaline earth metal hydroxides and carbonates, other alkaline alkali metal salts such as trisodium orthophosphate and sodium metaborate, and also alkali and alkaline earth metals. In individual cases it has been shown to be advantageous to reduce the effect of the alkaline condensation agent by adding a small amount of certain metals, e.g. B. of zinc or aluminum to strengthen ver.
The constant removal of the water of reaction formed from the reaction mixture can be done in various ways. For example, the water can simply be evaporated while the reaction liquid is being heated in the open vessel, or it can be continuously distilled off from a closed vessel. Azeotropic distillation can also be used, where the starting material of the process itself serves as an entrainer and is returned to the reaction mixture after separation from the water.
Or you can also use an entrainer in the form of an organic solvent that can easily be separated from the reaction mixture by distillation, e.g. B. in the form of hydrocarbons or mixtures thereof, add which distils off together with the water of reaction. and after the latter has been separated off, it is also fed back into the reaction mixture.
The process makes it possible to manufacture products of various 1VIolecular sizes, the latter depending on the duration of the condensation. Before, during or after the condensation, fillers and dyes of a known type can be added.
The reaction product obtained is a viscous oil which, either by itself or in the form of its derivatives, e.g. B. its esters with inorganic or organic acids or its ethers with alcohols, as paint raw material or as plasticizers in the plastics industry, z. B. for cellulose derivatives, Ver can be used. <I> Example: </I> 250 parts by weight of 1,5-pentanediol are heated to boiling with 8 parts by weight of potassium hydroxide until the temperature of the reaction mixture rises from an initial 237 to 280 C.
The temperature is set in such a way that the water produced in the reaction is distilled off, while the organic components are constantly fed back into the reaction mixture.
After about 10 hours, about 40% of a fraction boiling constantly at 135/14 mm is distilled off from the reaction product, which has the following parameters OH-Z: 340,% C: 78.0,% H:
11.32. This product, a viscous oil, has a camphor-like odor and can be converted into a sweet-smelling, good one by melting it with alkali. Transferring crystallizing acid.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE295308X | 1941-12-16 | ||
| CH235039T | 1942-08-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH295308A true CH295308A (en) | 1953-12-15 |
Family
ID=25727967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH295308D CH295308A (en) | 1941-12-16 | 1942-08-10 | Process for the production of a condensation product. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH295308A (en) |
-
1942
- 1942-08-10 CH CH295308D patent/CH295308A/en unknown
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