DE562512C - Process for the production of acidic ª ‡ -naphthylamine sulfate - Google Patents

Process for the production of acidic ª ‡ -naphthylamine sulfate

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Publication number
DE562512C
DE562512C DEW82898D DEW0082898D DE562512C DE 562512 C DE562512 C DE 562512C DE W82898 D DEW82898 D DE W82898D DE W0082898 D DEW0082898 D DE W0082898D DE 562512 C DE562512 C DE 562512C
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Germany
Prior art keywords
naphthylamine
acidic
sulfate
production
sulfuric acid
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Expired
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DEW82898D
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German (de)
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Individual
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Individual
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Publication of DE562512C publication Critical patent/DE562512C/en
Expired legal-status Critical Current

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Description

Verfahren zur Herstellung von saurem a-Naphthylaminsulfat Es ist bekannt, i Mol. a-Naphthylamin mit r Mol. Schwefelsäure zu vermischen und das Gemisch zur Herstellung von saurem a-Naphthylaminsulfat in einem zum Verbacken geeigneten Zustande auf 17o° bis i8o° zu erhitzen. Dabei wird das in der verwendeten Schwefelsäure enthaltene Wasser ausgetrieben und die Masse homogenisiert. Das auf Schalen o. dgl. ausgegossene Produkt ergibt ein trockenes saures Sulfat, das kein freies Wasser enthält.Process for the preparation of acidic a-naphthylamine sulfate It is known i mole of a-naphthylamine with r mole of sulfuric acid to mix and the mixture to Production of acid α-naphthylamine sulphate in a condition suitable for baking to be heated to 17o to 18o °. This is what is contained in the sulfuric acid used Expelled water and homogenized the mass. The poured onto bowls or the like Product gives a dry acid sulphate that does not contain free water.

Es wurde nun gefunden, daß sich saures a-Naphthylaminsulfat unmittelbar in einem zum Verbacken geeigneten Zustand erhalten läßt, wenn man eine gegebene Gewichtsmenge a-Naphthylamin mit annähernd der gleichen Molekularmenge Schwefelsäure in einer Stärke von nicht mehr als ioo °/o in einer Misch- oder Mahlmaschine so behandelt, daß keine andere Wärine als die durch die Reaktion gegebene zur Verwendung kommt. Man erhält so das trockene saure a-Naphthylaminsulfat ohne Anwendung von Hitze und ohne Beimengung von teerigen Bestandteilen und anderen Zersetzungsprodukten.It has now been found that acidic a-naphthylamine sulfate directly can be preserved in a condition suitable for baking, if you have a given Amount by weight of a-naphthylamine with approximately the same molecular amount of sulfuric acid at a strength of not more than 100 per cent in a mixing or milling machine so treats that no heat other than that given by the reaction can be used comes. The dry acidic a-naphthylamine sulfate is obtained in this way without the use of Heat and without the addition of tarry components and other decomposition products.

Obgleich die Reaktion auch mit geringeren Mengen Schwefelsäure durchgeführt werden kann, ist es doch zweckmäßig, daß die Menge der Schwefelsäure etwas größer gewählt wird, als dem Molekularverhältnis entspricht, um dadurch einen Überschuß an Naphthylamin im fertigen Produkt zu vermeiden. Beispiel 143 g a-Naphthylainin werden in eine Misch- oder Mahlmaschine eingetragen, die wassergekühlt sein kann. Hierauf läßt man ioo g Schwefelsäure (ioo °/o H. S04) bei niedriger Temperatur einlaufen, worauf man das Ganze miteinander vermischt und verinahlt. Statt ioo°/aige Schwefelsäure zu verwenden, kann man auch eine entsprechend größere Menge schwächerer Säure benutzen. Verwendet man z. B. 7o°/oige Schwefelsäure, so nimmt man davon 143 g, also die gleiche Gewichtsmenge wie vom a-Naphthylamin.Although the reaction was also carried out with smaller amounts of sulfuric acid it is advisable that the amount of sulfuric acid be somewhat larger is chosen as corresponding to the molecular ratio, thereby making an excess to avoid naphthylamine in the finished product. Example 143 g of α-naphthylic acid are fed into a mixing or grinding machine, which can be water-cooled. Then 100 g of sulfuric acid (100 ° / o H. SO4) are allowed to run in at a low temperature, whereupon you mix and match the whole thing together. Instead of 100% sulfuric acid to use, you can also use a correspondingly larger amount of weaker acid. If you use z. B. 70 per cent. Sulfuric acid, one takes 143 g of it, that is the same Amount by weight as for a-naphthylamine.

Das Verfahren läßt sich auch in der Weise ausführen, daß man zuerst die Schwefelsäure in die Misch- oder Mahlinaschine einbringt und dann das a-Naphthylamin hinzusetzt.The procedure can also be carried out in such a way that one first introduces the sulfuric acid into the mixing or grinding machine and then the α-naphthylamine added.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von saurem a-Naphthylaminsulfat in einem zum Verbacken unmittelbar geeigneten Zustande, dadurch gekennzeichnet, daß man a-Naphthylamin mit annähernd der gleichen Molekularmenge einer nicht stärker als ioo°/oigen Schwefelsäure in einer Misch-oder Mahlmaschine ohne Wärmezufuhr behandelt.PATENT CLAIM: Process for the production of acidic a-naphthylamine sulfate in a condition immediately suitable for baking, characterized in that that one a-naphthylamine with approximately the same molecular amount is no stronger treated as 100% sulfuric acid in a mixing or grinding machine without supply of heat.
DEW82898D 1928-06-19 1929-06-12 Process for the production of acidic ª ‡ -naphthylamine sulfate Expired DE562512C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB562512X 1928-06-19

Publications (1)

Publication Number Publication Date
DE562512C true DE562512C (en) 1932-10-26

Family

ID=10476168

Family Applications (1)

Application Number Title Priority Date Filing Date
DEW82898D Expired DE562512C (en) 1928-06-19 1929-06-12 Process for the production of acidic ª ‡ -naphthylamine sulfate

Country Status (1)

Country Link
DE (1) DE562512C (en)

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