AT39290B - Process for the preparation of durable double compounds of aldehydes with reduction products of sulphurous acid. - Google Patents
Process for the preparation of durable double compounds of aldehydes with reduction products of sulphurous acid.Info
- Publication number
- AT39290B AT39290B AT39290DA AT39290B AT 39290 B AT39290 B AT 39290B AT 39290D A AT39290D A AT 39290DA AT 39290 B AT39290 B AT 39290B
- Authority
- AT
- Austria
- Prior art keywords
- aldehydes
- preparation
- sulphurous acid
- reduction products
- double compounds
- Prior art date
Links
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Catalysts (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Darstellung haltbarer Doppelverbindungen von Aldehyden mit Reduktionsprodukten der schwefligen Säure.
Nach dem Stamm-Patent Nr. 37921 erhält man bei Zuleiten von schwefliger Saure zu einem Gemisch gleicher Äquivalente Zinkstaub und Aldehyd in einem in (lifferenten, flüssigen Vehikel, bis der Zinkstaub verschwunden und eine Paste entstanden ist (wozu
EMI1.1
(worin R = H oder einwertiges Radikal) z. B.
(H0) CH. 5'O. ZH (OH).
Verdoppelt man gemäss dem ersten Zusatzpatent Nr. 39289 die Aldehydmenge
EMI1.2
Das so erhaltene leicht losliche Produkt wirkt nur halb so stark reduzierend. wie das nach dem Beispiel des Stammpatentes erhaltene, schwer losliche. Man bestimmt diese
EMI1.3
EMI1.4
verwendet. Dieses Verfahren hat vor dem einfachen Zusammenmischen der nach dem Stamm- und ersten Zusatzpatent erhaltenen Produkte den grossen technischen Vorteil, dass das Produkt in einer einzigen Operation statt in zwei getrennten Fabrikationen hergestellt wird, dass ferner die Operation des Mischens ganz fortfällt, und dass das erhaltene Produkt einheitlicher ist als das durch blosses Mischen der in zwei verschiedenen Fabrikationen hergestellten Produkten erhaltene.
EMI1.5
lassen sich in derselben Weise die tlydrosultitverbindungen andrer Aldehyde darstellen. *) Erstes Zusatz-Pateilt Nr.
<Desc/Clms Page number 2>
EMI2.1
tionsprodukt wird entweder direkt als Zinksalz verwendet oder durch das Umsetzen mit Soda in das Natriumsalz umgewandelt, welches durch Eindampfen im Vakuum fest erhalten wird. 1 dieses Natriumsalzes reduziert 1,1 bis 1, 2 Indigo.
Beispiel 2 : In ein Gemisch von 65 kl Zinkstaub und 330 Azetaldehyd von 20 Prozent werden unter gutem Rühren 100 kg schweflige Säure eingeleitet. Das Reaktionsprodukt stellt einen grauweissen Brei dar. Zur Verarbeitung auf das Natronsalz wird dieser mit Soda bis zum Beginn der alkalischen Reaktion angerührt, abgesaugt und das Filtrat im. Vakuum eingedampft. Das so gewonnene Natronsalz ist ein weisser, sehr hygroskopischer Körper, der schwer ganz trocken zu erhalten ist und Indigosulfosäure leicht reduziert.
<Desc / Clms Page number 1>
Process for the preparation of durable double compounds of aldehydes with reduction products of sulphurous acid.
According to the parent patent No. 37921, adding sulfuric acid to a mixture of equal equivalents of zinc dust and aldehyde in a differentiated, liquid vehicle, until the zinc dust has disappeared and a paste has formed (for which
EMI1.1
(where R = H or monovalent radical) e.g. B.
(H0) CH. 5'O. ZH (OH).
According to the first additional patent no. 39289, the amount of aldehyde is doubled
EMI1.2
The easily soluble product obtained in this way has only half the reducing effect. like the one obtained according to the example of the parent patent, which is difficult to dissolve. You determine this
EMI1.3
EMI1.4
used. Before the simple mixing together of the products obtained according to the parent patent and the first additional patent, this process has the great technical advantage that the product is manufactured in a single operation instead of in two separate fabrications, that the mixing operation is completely eliminated and that the obtained Product is more uniform than that obtained by simply mixing the products made in two different factories.
EMI1.5
the tlydrosultite compounds of other aldehydes can be prepared in the same way. *) First additional patent no.
<Desc / Clms Page number 2>
EMI2.1
tion product is either used directly as the zinc salt or converted into the sodium salt by reaction with soda, which is obtained as a solid by evaporation in vacuo. 1 of this sodium salt reduces 1.1 to 1.2 indigo.
Example 2: 100 kg of sulfurous acid are introduced into a mixture of 65 kl zinc dust and 330 acetaldehyde of 20 percent with thorough stirring. The reaction product is a gray-white paste. For processing on the sodium salt, this is mixed with soda until the alkaline reaction begins, filtered off and the filtrate im. Evaporated in vacuo. The sodium salt obtained in this way is a white, very hygroscopic body, which is difficult to keep completely dry and which slightly reduces indigo sulfonic acid.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1905202826D DE202826C (en) | 1905-03-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT39290B true AT39290B (en) | 1909-10-11 |
Family
ID=5773435
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT39290D AT39290B (en) | 1905-03-17 | 1908-10-24 | Process for the preparation of durable double compounds of aldehydes with reduction products of sulphurous acid. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT39290B (en) |
-
1908
- 1908-10-24 AT AT39290D patent/AT39290B/en active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2514399C2 (en) | Process for the production of aluminium silicates | |
DE2716794A1 (en) | METHOD OF MANUFACTURING CALCIUM CARBONATE BODY CHAINS | |
EP0798300B1 (en) | Aluminium compounds | |
AT39290B (en) | Process for the preparation of durable double compounds of aldehydes with reduction products of sulphurous acid. | |
DE1160410B (en) | Process for the production of catalysts containing vanadium, silica, sodium and potassium for the catalytic oxidation of sulfur dioxide to sulfur trioxide | |
DE69613454T2 (en) | Glucuronylarabinarate, process for their preparation and applications of these products | |
DE688503C (en) | Process for the preparation of humic acid complex compounds which can be used as soil improvers | |
DE202826C (en) | ||
AT65095B (en) | Process for the production of long-lasting concentrated indigo white preparations, especially suitable for the fermentation vat. | |
DE977129C (en) | Process for the production of an extremely finely divided mixture of water-soluble calcium compounds consisting essentially of calcium carbonate | |
DE736502C (en) | Process for the production of base exchangers | |
AT263753B (en) | Process for the preparation of 2,5-dihydroxyterephthalic acid | |
DE394488C (en) | Process for the production of plastics | |
AT91895B (en) | Process for the preparation of alkali borates. | |
AT68727B (en) | Process for reducing sulphurous acid or its salts using zinc. | |
DE318948C (en) | Process for the preparation of water-soluble condensation products | |
DE352521C (en) | Process for hardening natural and synthetic resins, pitch, goudron and the like Like substances | |
DE579488C (en) | Process for the production of monobasic aluminum sulfate | |
AT126141B (en) | Process for changing the physical properties of finely divided silicate minerals. | |
AT54368B (en) | Process for the production of preparations suitable for the indigo vats, especially the cold vats. | |
DE2119119C3 (en) | Process for removing cyanide ions from sewage | |
DE2124329C3 (en) | Process for the preparation of alkali salts of ambiopolycarboxylic acids | |
DE3618816A1 (en) | METHOD FOR REDUCING THE COPPER SALT IN OXAMIDE | |
AT69805B (en) | Process for the preparation of salts of formaldehyde sulfoxylic acid. | |
AT60586B (en) | Process for the extraction of humus-like substances Sulphite waste eye. |