CH156307A - Process for the preparation of a sulfuric acid ester. - Google Patents
Process for the preparation of a sulfuric acid ester.Info
- Publication number
- CH156307A CH156307A CH156307DA CH156307A CH 156307 A CH156307 A CH 156307A CH 156307D A CH156307D A CH 156307DA CH 156307 A CH156307 A CH 156307A
- Authority
- CH
- Switzerland
- Prior art keywords
- sulfuric acid
- acid ester
- preparation
- forms
- water
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C305/00—Esters of sulfuric acids
Description
Verfahren zur Herstellung eines Schwefelsäureesters. Es wurde gefunden, dass man einen als Hilfsstoff für die Textilindustrie wertvollen Schwefelsäureester erhält, wenn man Stearin alkohol mit den Additionsprodukten, welche Schwefeltrioxyd mit organischen Basen bildet, behandelt.
Der so hergestellte Schwefelsäureester bil det eine weisse Masse, die in Wasser unter Bildung einer stark schäumenden Lösung leicht löslich ist.
<I>Beispiel:</I> Zu 100 Teilen wasserfreiem Pyridin lässt man unter Rühren bei 0-10 0 30 Teile Chlor- sulfonsäure (120-125 % der Theorie) zu- tropfen. Die erhaltene Pyridinsulfotrioxyd- suspension versetzt man mit einer Lösung, bestehend aus 54 Teilen Stearinalkohol und 170 Teilen wasserfreiem Pyridin. Es findet dabei Temperatursteigerung bis auf etwa 30 0 statt.
Bei 26- 30 0 tritt vorübergehender gallertartiger Zustand der Reaktionsflüssig- keit ein, welcher bei etwas höherer Temperatur wieder verschwindet. plan heizt weiter auf 40 0 und hält noch während zwei Stunden bei 40-45 0. Nach dieser Zeit wird das Reaktionsgemisch abgekühlt, kalt mit ver dünnter Natriumhydroxydlösung neutralisiert (bis gerade Phenolphthaleinalkalinität ein tritt), im Vakuum bei mässiger Temperatur (50-60 0) vom Pyridin befreit, der zurück gebliebene Salzrückstand mit Wasser aufge nommen, abgesaugt, und der Rückstand mit wenig Wasser salzfrei gewaschen. Das zurück bleibende weisse Natriumsalz wird im Vakuum bei 70--80 0 bis zur Gewichtskonstanz ge trocknet.
Man erhält das Estersalz in einer Ausbeute von über 90 % der Theorie.
Process for producing a sulfuric acid ester. It has been found that a sulfuric acid ester valuable as an auxiliary for the textile industry is obtained when stearic alcohol is treated with the addition products which sulfur trioxide forms with organic bases.
The sulfuric acid ester produced in this way forms a white mass that is easily soluble in water to form a strongly foaming solution.
<I> Example: </I> 30 parts of chlorosulfonic acid (120-125% of theory) are added dropwise to 100 parts of anhydrous pyridine while stirring at 0-10 °. The pyridinesulfotrioxide suspension obtained is mixed with a solution consisting of 54 parts of stearic alcohol and 170 parts of anhydrous pyridine. The temperature increases up to about 30 °.
At 26-30 0, the reaction liquid becomes temporarily gelatinous, which disappears again at a somewhat higher temperature. plan continues to heat to 40 0 and remains at 40-45 0 for two hours. After this time, the reaction mixture is cooled, neutralized cold with dilute sodium hydroxide solution (until phenolphthalein alkalinity occurs), in vacuo at a moderate temperature (50-60 0 ) freed from pyridine, the remaining salt residue taken up with water, filtered off with suction, and the residue washed salt-free with a little water. The white sodium salt that remains is dried in vacuo at 70-80 ° to constant weight.
The ester salt is obtained in a yield of over 90% of theory.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH149091T | 1931-05-29 | ||
CH156307T | 1931-05-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH156307A true CH156307A (en) | 1932-07-31 |
Family
ID=25715336
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH156307D CH156307A (en) | 1931-05-29 | 1931-05-29 | Process for the preparation of a sulfuric acid ester. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH156307A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2689244A (en) * | 1950-06-23 | 1954-09-14 | Phillips Petroleum Co | Process for production of chitin sulfate |
-
1931
- 1931-05-29 CH CH156307D patent/CH156307A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2689244A (en) * | 1950-06-23 | 1954-09-14 | Phillips Petroleum Co | Process for production of chitin sulfate |
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