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DE1177143B - Method of drying raw, damp vinyl chloride - Google Patents

Method of drying raw, damp vinyl chloride

Info

Publication number
DE1177143B
DE1177143B DEB55756A DEB0055756A DE1177143B DE 1177143 B DE1177143 B DE 1177143B DE B55756 A DEB55756 A DE B55756A DE B0055756 A DEB0055756 A DE B0055756A DE 1177143 B DE1177143 B DE 1177143B
Authority
DE
Germany
Prior art keywords
vinyl chloride
water
damp
drying raw
distillation
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.)
Pending
Application number
DEB55756A
Other languages
German (de)
Inventor
Dr Hans Kaltschmitt
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DEB55756A priority Critical patent/DE1177143B/en
Publication of DE1177143B publication Critical patent/DE1177143B/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/38—Separation; Purification; Stabilisation; Use of additives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Description

Verfahren zum Trocknen von rohem, feuchtem Vinylchlorid In der deutschen Patentschrift 863 802 ist ein Verfahren zum Trocknen von rohem, feuchtem Vinylchlorid beschrieben, bei dem man dem Vinylchlorid vor und/oder während der Destillation mit Wasser oder mit Vinylchlorid und Wasser mischbare Stoffe, die den Gefrierpunkt des Wassers senken, zufügt, Als derartige Zusatzstoffe werden Methanol, Äthanol, Glykole, Acetale, Äther, Ketone, Ester und Glykoläther verwendet. Diesen Stoffen kann man auch Polymerisationsverzögerer zusetzen.Method for drying raw, damp vinyl chloride In the German U.S. Patent 863 802 is a method of drying raw, damp vinyl chloride described, in which the vinyl chloride before and / or during the distillation Substances that are miscible with water or with vinyl chloride and water that reduce the freezing point lowering the water, adding, As such additives are methanol, ethanol, Glycols, acetals, ethers, ketones, esters and glycol ethers are used. These substances polymerization retarders can also be added.

Bei dieser Arbeitsweise können jedoch die verwendeten Apparaturen korrodieren, wobei das rohe Vinylchlorid gegebenenfalls durch Eisenchlorid verunreinigt wird. Eisenchlorid katalysiert aber die Polymerisation von Vinylchlorid und reichert sich bei dessen Destillation im Rückstand an. Dadurch kann das Trocknen von Vinylchlorid bei kontinuierlicher Arbeitsweise behindert werden. In this procedure, however, the equipment used corrode, the crude vinyl chloride possibly contaminated by ferric chloride will. Iron chloride, however, catalyzes the polymerization of vinyl chloride and enriches it in its distillation in the residue. This can prevent the drying of vinyl chloride be hindered when working continuously.

Es wurde nun gefunden, daß man rohes, feuchtes Vinylchlorid durch Destillation, wobei vor und bzw. oder während der Destillation mit Wasser oder mit Vinylchlorid und Wasser mischbare Stoffe, die den Gefrierpunkt des Wassers senken, und Polymerisationsverzögerer zugefügt werden, unter Vermeidung des erwähnten Nachteils trocknen kann, indem man den den Gefrierpunkt des Wassers senkenden Stoffen als Polymerisationsverzögerer aliphatische, cycloaliphatische oder heterocyclische Amine oder Gemische derselben in solchen Mengen zufügt, daß das rohe Vinylchlorid einen pll-Wert zwischen 8 und 12, vorzugsweise p, 10, hat. It has now been found that you can crude, moist vinyl chloride through Distillation, before and or or during the distillation with water or with Vinyl chloride and water miscible substances that lower the freezing point of water, and polymerization retarders are added while avoiding the aforementioned disadvantage can dry by using substances that lower the freezing point of water as Polymerization retarders aliphatic, cycloaliphatic or heterocyclic amines or mixtures thereof in such amounts that the crude vinyl chloride has a pll value between 8 and 12, preferably p.10.

Geeignete aliphatische, cycloaliphatische oder heterocyclische Amine im Sinne der Erfindung sind z. B. Trimethylamin, Triäthylamin, Propylamin, Dipropylamin, Triproylamin, Triisopropylamin, Butylamin, Dibutylamin, Tributylamin, Diisobutylamin, Triisobutylamin, 2-Äthylhexylamin, Di-2-äthylhexyl- amin, Heptylamin, Octylamin, Cyclopentylamin, Cyclohexylamin, Pyrolidin, Piperidin, Piperazin und Hexamethylenimin. Suitable aliphatic, cycloaliphatic or heterocyclic amines within the meaning of the invention are, for. B. trimethylamine, triethylamine, propylamine, dipropylamine, Triproylamine, triisopropylamine, butylamine, dibutylamine, tributylamine, diisobutylamine, Triisobutylamine, 2-ethylhexylamine, di-2-ethylhexyl- amine, heptylamine, octylamine, Cyclopentylamine, cyclohexylamine, pyrolidine, piperidine, piperazine and hexamethyleneimine.

Claims (1)

Patentanspruch: Verfahren zum Trocknen von rohem, feuchtem Vinylchlorid durch Destillation, wobei vor und bzw. oder während der Destillation mit Wasser oder mit Vinylchlorid und Wasser mischbare Stoffe, die den Gefrierpunkt des Wassers senken, und Polymerisationsverzögerer zugefügt werden, dadurch gekennzeichnet, daß man den den Gefrierpunkt des Wassers senkenden Stoffen als Polymerisationsverzögerer aliphatische, cycloaliphatische oder heterocyclische Amine oder Gemischederselben in solchen Mengen zufügt, daß das rohe Vinylchlorid einen pH-Wert zwischen 8 und 12, vorzugsweise p, 10, hat. Claim: Method for drying raw, damp vinyl chloride by distillation, before and or or during the distillation with water or substances miscible with vinyl chloride and water that reduce the freezing point of water lower, and polymerization retarders are added, characterized in that the substances that lower the freezing point of water are used as polymerization retarders aliphatic, cycloaliphatic or heterocyclic amines or mixtures thereof in such amounts that the crude vinyl chloride has a pH between 8 and 12, preferably p, 10. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 863 802; britische Patentschriften Nr. 551 584, 627 939. Publications considered: German Patent No. 863 802; British Patent Nos. 551 584, 627 939.
DEB55756A 1959-12-02 1959-12-02 Method of drying raw, damp vinyl chloride Pending DE1177143B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB55756A DE1177143B (en) 1959-12-02 1959-12-02 Method of drying raw, damp vinyl chloride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB55756A DE1177143B (en) 1959-12-02 1959-12-02 Method of drying raw, damp vinyl chloride

Publications (1)

Publication Number Publication Date
DE1177143B true DE1177143B (en) 1964-09-03

Family

ID=6971090

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB55756A Pending DE1177143B (en) 1959-12-02 1959-12-02 Method of drying raw, damp vinyl chloride

Country Status (1)

Country Link
DE (1) DE1177143B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB551584A (en) * 1941-08-25 1943-03-02 Distillers Co Yeast Ltd Improvements in or relating to the stabilisation of vinylidene chloride
GB627939A (en) * 1947-08-22 1949-08-18 John Galloway And Company Ltd Improvements relating to driving mechanism for calendering rollers or cylinders
DE863802C (en) * 1950-12-09 1953-01-19 Basf Ag Method of drying raw, damp vinyl chloride

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB551584A (en) * 1941-08-25 1943-03-02 Distillers Co Yeast Ltd Improvements in or relating to the stabilisation of vinylidene chloride
GB627939A (en) * 1947-08-22 1949-08-18 John Galloway And Company Ltd Improvements relating to driving mechanism for calendering rollers or cylinders
DE863802C (en) * 1950-12-09 1953-01-19 Basf Ag Method of drying raw, damp vinyl chloride

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