DE916770C - Process for the production of alkali compounds from crude pentachlorophenol - Google Patents

Process for the production of alkali compounds from crude pentachlorophenol

Info

Publication number
DE916770C
DE916770C DEP26908A DEP0026908A DE916770C DE 916770 C DE916770 C DE 916770C DE P26908 A DEP26908 A DE P26908A DE P0026908 A DEP0026908 A DE P0026908A DE 916770 C DE916770 C DE 916770C
Authority
DE
Germany
Prior art keywords
pentachlorophenol
crude
alkali compounds
production
water
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
Application number
DEP26908A
Other languages
German (de)
Inventor
Dr Karl Daimler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoechst AG
Original Assignee
Hoechst AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hoechst AG filed Critical Hoechst AG
Priority to DEP26908A priority Critical patent/DE916770C/en
Application granted granted Critical
Publication of DE916770C publication Critical patent/DE916770C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/64Preparation of O-metal compounds with O-metal group bound to a carbon atom belonging to a six-membered aromatic ring
    • C07C37/66Preparation of O-metal compounds with O-metal group bound to a carbon atom belonging to a six-membered aromatic ring by conversion of hydroxy groups to O-metal groups

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Herstellung von Alkaliverbindungen aus rohem Pentachlorphenol Pentachlorphenol läßt sieh nach den üblichen Methoden durch Chlorieren von Phenol nicht sofort in reiner Form gewinnen, sondern man erhält ein Rohprodukt, das vornehmlich durch das in Alkali unlösliche Hexachlorphenol verunreinigt ist. Um in Wasser klar lösliche Alkalisalze aus rohem Pentachlorphenol zu gewinnen, mußte man bisher durch Filtratio nsverfahren oder durch Reduktion das Hexachlorphenol entfernen bzw. abbauen.Process for the preparation of alkali compounds from crude pentachlorophenol Pentachlorophenol can be obtained by chlorinating phenol according to the usual methods not immediately win in pure form, but you get a raw product that is primarily is contaminated by the alkali-insoluble hexachlorophenol. To be clear in water To obtain soluble alkali salts from crude pentachlorophenol, one had to go through until now The hexachlorophenol can be removed or broken down by filtration processes or by reduction.

Es wurde nun gefunden. daß man in Wasser klar lösliche Alkaliverhindungen aus rohem Pentachlorphenol erhält, wenn man dieses in Gegenwart von wenig Wasser mit der erforderlichen Menge Natronlauge umsetzt. Man arbeitet also bei de: Neutralisation mit verhältnismäßig wasserarmen Teigen und vermeidet den eigentlichen Lösungsvorgang. Dabei geht offenbar das Hexac'hlorphenol in eine lösliche Form über, die auch dann erhalten bleibt, wenn man den Teig anschließend trocknet. Das Trocknen ist jedoch nicht unbedingt erforderlich; für die meisten praktischen Anwendungen eines solchen rohen Pentachlorphenolats ist die Teig form günstiger, weil sie nicht, wie das trockene Phenolat, zum Husten reizt, was beim Umfüllen und Lösen in der Praxis Schwierigkeiten bereitet.It has now been found. that there are clearly soluble alkali compounds in water obtained from crude pentachlorophenol if this is obtained in the presence of a little water with the required amount of sodium hydroxide solution. So you work at de: neutralization with dough that is relatively low in water and avoids the actual dissolving process. Apparently the Hexac'hlorphenol goes into a soluble form, which also then is retained when the dough is then dried. The drying is however not necessarily required; for most practical applications of such raw pentachlorophenolate is the dough shape cheaper because it is not like the dry one Phenolate, irritates coughing, which makes it difficult to transfer and dissolve in practice prepares.

Wie weiter gefunden wurde, kann man die Umsetzung in wäßrigem Meidium bei hoher Konzentration mit Vorteil mit der Einverleibung o.berflächenaktiver Substanzen verknüpfen, um Sonderwirkungen hervorzubringen., beispielsweise eine Steigerung der Eindringungstiefe in Substrate u. dgl. Besonders vorteilhaft ist die Mitverwendung von Salzen von alkylierten oder aralkylierten Naphthalinsulfonsäuren. Beispiel i ioo kg eines etwa wäßrigen Teiges von rohem, mehrere Prozente Hexachlorphenol enthaltendem Pentachlorphenol werden in einem Werner-Pfleiderer-Kneter unter allmählicher Zugabe von konzentrierter Natronlaugeneutral.gestellt. Während ein zum Vergleich in Lösung, also in viel Wasser durchgeführter Neutralis-ationsversuch erhebliche Mengen eines unlöslichen Rückstandes zeigt, ist eine Probe des erfindungsgemäß umgesetzten Teiges in kaltem Wasser klar löslich, enthält also keine sichtbaren und störenden Abscheidungen von Hexachlorphenol.As was further found, the reaction can be carried out in aqueous meidium In the case of high concentration, it is advantageous to incorporate or surface-active Substances link in order to produce special effects, for example an increase the depth of penetration into substrates and the like of salts of alkylated or aralkylated naphthalenesulfonic acids. Example i 100 kg of an approximately aqueous dough of raw, several percent hexachlorophenol containing Pentachlorophenol are added gradually in a Werner-Pfleiderer kneader made of concentrated caustic soda neutral. While one is in solution for comparison, So a neutralization test carried out in a lot of water considerable amounts of a shows insoluble residue is a sample of the dough reacted according to the invention Clearly soluble in cold water, so it does not contain any visible or annoying deposits of hexachlorophenol.

Beispiel 2 8oo kg des im Beispiel i genannten Pentachlorphenolteiges werden mit 20o kg eines etwa 6o% Trockensubstanz enthaltenden Teiges von butylnaphthalinsulfonsaurem Natrium gemischt und mit so viel konzentrierter, z. B. 45o/o-iger Natronlauge versetzt, daß eine sich mit neutraler Reaktion klar in Wasser lösende Paste entsteht. Diese kann gegebenenfalls getrocknet und gemahlen werden.Example 2 800 kg of the pentachlorophenol dough mentioned in Example i are with 20o kg of a dough containing about 6o% dry matter of butylnaphthalenesulfonic acid Sodium mixed and with so much more concentrated, e.g. B. 45o / o sodium hydroxide solution added, that a paste is formed which dissolves clearly in water with a neutral reaction. These can optionally be dried and ground.

Claims (3)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung von in Wasser klar löslichen Alkaliverbindungen aus rohem Pentachlorphenol, dadurch gekennzeichnet, daß man dieses in Gegenwart von wenig Wasser mit der erforderlichen Menge Natronlauge umsetzt. PATENT CLAIMS: i. Process for the preparation of clearly soluble in water Alkali compounds from crude pentachlorophenol, characterized in that this Reacts in the presence of a little water with the required amount of sodium hydroxide solution. 2. Verfahren nach Anspruch i, dadurch gegekennzeichnet, daß man die Umsetzung mit Natronlauge in Gegenwart oberflächenaktiver Substanzen durchführt. 2. The method according to claim i, characterized in that the reaction is carried out with Performs sodium hydroxide solution in the presence of surface-active substances. 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, d'aß man Salze von alkylierten bzw. aralkylierten Naphthalinsulfonsäuren verwendet. Angezogene Druckschriften: USA.-Patentschrift Nr. 1991329.3. Procedure according to claim 2, characterized in that salts of alkylated or aralkylated Naphthalenesulfonic acids are used. References Cited: United States Patent Specification No. 1991329.
DEP26908A 1948-12-25 1948-12-25 Process for the production of alkali compounds from crude pentachlorophenol Expired DE916770C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP26908A DE916770C (en) 1948-12-25 1948-12-25 Process for the production of alkali compounds from crude pentachlorophenol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP26908A DE916770C (en) 1948-12-25 1948-12-25 Process for the production of alkali compounds from crude pentachlorophenol

Publications (1)

Publication Number Publication Date
DE916770C true DE916770C (en) 1954-08-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEP26908A Expired DE916770C (en) 1948-12-25 1948-12-25 Process for the production of alkali compounds from crude pentachlorophenol

Country Status (1)

Country Link
DE (1) DE916770C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255593A (en) 1980-02-21 1981-03-10 Chapman Chemical Company Salts of polychlorinated phenols

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1991329A (en) * 1932-05-02 1935-02-12 Dow Chemical Co Alkali-metal trichlorophenolates

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1991329A (en) * 1932-05-02 1935-02-12 Dow Chemical Co Alkali-metal trichlorophenolates

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255593A (en) 1980-02-21 1981-03-10 Chapman Chemical Company Salts of polychlorinated phenols

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