DE977900C - Process for the production of polyvinyl nitrate - Google Patents

Process for the production of polyvinyl nitrate

Info

Publication number
DE977900C
DE977900C DEJ17580A DEJ0017580A DE977900C DE 977900 C DE977900 C DE 977900C DE J17580 A DEJ17580 A DE J17580A DE J0017580 A DEJ0017580 A DE J0017580A DE 977900 C DE977900 C DE 977900C
Authority
DE
Germany
Prior art keywords
production
temperatures
nitrate
nitric acid
nitrating
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
DEJ17580A
Other languages
German (de)
Inventor
Karl Dr-Chem Mayer
Klaus Martin Dipl-Che Bucerius
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.)
Bundesrepublik Deutschland
Original Assignee
Bundesrepublik Deutschland
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 Bundesrepublik Deutschland filed Critical Bundesrepublik Deutschland
Priority to DEJ17580A priority Critical patent/DE977900C/en
Application granted granted Critical
Publication of DE977900C publication Critical patent/DE977900C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
    • C08L29/02—Homopolymers or copolymers of unsaturated alcohols
    • C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Description

O O
ON OO
ON

Gegenstand des Patents 977 885 ist ein Verfahren zur Herstellung von Polyvinylalkohol aus monomerem Vinylencarbonat in einem einstufigen Prozeß, das dadurch gekennzeichnet ist, daß man in einem Arbeitsgang Vinylencarbonat in wäßrigem oder einem anderen nichtlösenden Medium, wie Benzin, Kohlenwasserstoffen od. dgl., einer Perlbzw. Emulsionspolymerisation unter Zusatz von Emulgatoren und Polymerisationsinitiatoren unterwirft, das Polymerisat zwecks Koagulation des Polyvinylencarbonats ansäuert und hydrolysiert. Dabei kann man die Polymerisation bei Temperaturen von etwa ioo° C oder höher unter Anwendung von Druck in inerter Gasatmosphäre durchführen. The subject of the patent 977 885 is a process for the production of polyvinyl alcohol from monomeric vinylene carbonate in a one-step process, which is characterized in that one in one operation vinylene carbonate in aqueous or other non-dissolving medium, such as Gasoline, hydrocarbons or the like, a pearl or. Emulsion polymerization with the addition of Subjects emulsifiers and polymerization initiators, the polymer for the purpose of coagulation of the Acidified and hydrolyzed polyvinylene carbonate. The polymerization can be carried out at temperatures of about 100 ° C or higher using pressure in an inert gas atmosphere.

Gegenstand der Erfindung ist ein Verfahren zur Herstellung von Polyvinylennitrat, das dadurch gekennzeichnet ist, daß man Polyvinylalkohol mit Nitriermitteln, wie konzentrierter Salpetersäure, mit anorganischem Nitrat gesättigter Salpetersäure, Nitriersäure, Nitrylchlorid (NO2Cl), bei Temperaturen bis zu 200 C behandelt, die entstehende Lösung in Wasser eingießt und den flockigen Niederschlag isoliert.The invention relates to a process for the production of polyvinyl nitrate, which is characterized in that polyvinyl alcohol is treated with nitrating agents, such as concentrated nitric acid, nitric acid saturated with inorganic nitrate, nitrating acid, nitryl chloride (NO 2 Cl), at temperatures up to 20 ° C., the resulting solution is poured into water and the flaky precipitate is isolated.

Das erhaltene Produkt kann in wäßrigem Medium unter Zusatz von stabilisierend wirkenden Mitteln, wie schwachen Alkalien, mehrere Stunden bei Temperaturen bis zu 6o° C gerührt werden.The product obtained can be stirred in an aqueous medium with the addition of stabilizing agents, such as weak alkalis, for several hours at temperatures of up to 60.degree.

Beispielexample

32 g pulverförmiger Polyvinylalkohol wurden mit 400 ecm konzentrierter Salpetersäure bei etwa 20° C nitriert. Nach 50 Minuten war nahezu alles32 g of powdered polyvinyl alcohol were nitrated with 400 ecm of concentrated nitric acid at around 20 ° C. After 50 minutes, almost everything was there

gelöst. Die Lösung wurde in etwa 600 ecm Wasser von etwa 2 bis 30 C gegossen, worauf sofort weiße Flocken ausfielen, die abfiltriert, gewaschen und isoliert wurden. Zur Stabilisierung wurde das Produkt in wäßrigem Medium unter Zusatz von stabilisierend wirkenden Mitteln, wie schwachen Alkalien, mehrere Stunden bei Temperaturen bis zu etwa 6o° C gerührt. Der Stickstoffgehalt des erhaltenen Produkts betrug 16,5% (Theoriesolved. The solution was poured into about 600 cc of water at about 2 to 3 0 C, immediately followed by white flakes precipitated, which was filtered, washed, and were isolated. For stabilization, the product was stirred in an aqueous medium with the addition of stabilizing agents, such as weak alkalis, for several hours at temperatures of up to about 60.degree. The nitrogen content of the product obtained was 16.5% (theory

Ho 18,7%).Ho 18.7%).

Wird als Nitriermittel eine mit anorganischem Nitrat gesättigte Salpetersäure verwendet, so kann der theoretische Stickstoffgehalt des Polyvinylennitrats praktisch erreicht werden.If nitric acid saturated with inorganic nitrate is used as the nitrating agent, then the theoretical nitrogen content of the polyvinyl nitrate can be achieved in practice.

Die Erzeugnisse des Verfahrens eignen sich hervorragend als Pulver, Treib- und Sprengstoffe für sich und im Gemisch mit anderen Stoffen, wie z. B, als Plastifizierungsmittel für Nitroglycerin, zur Herstellung plastischer Sprengstoffe aufThe products of the process are ideal as powders, propellants and explosives for and in a mixture with other substances, such as. B, as a plasticizer for nitroglycerin, for the production of plastic explosives

»0 Basis TNT, Hexogen.»0 based on TNT, hexogen.

Claims (2)

PATENTANSPRÜCHE:PATENT CLAIMS: 1. Verfahren zur Herstellung von PoIyvinylennitrat, dadurch gekennzeichnet, daß man Polyvinylalkohol mit Nitriermitteln, wie konzentrierter Salpetersäure, mit anorganischem Nitrat gesättigter Salpetersäure, Nitriersäure, Nitrylchlorid (NO2Cl), bei Temperaturen bis zu 20° C behandelt, die entstehende Lösung in Wasser eingießt und den flockigen Niederschlag isoliert.1. A process for the production of polyvinyl nitrate, characterized in that polyvinyl alcohol is treated with nitrating agents such as concentrated nitric acid, nitric acid saturated with inorganic nitrate, nitrating acid, nitryl chloride (NO 2 Cl), at temperatures up to 20 ° C, and the resulting solution is treated in water poured and the flaky precipitate isolated. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man das, erhaltene Produkt in wäßrigem Medium .unter Zusatz von stabilisierend wirkenden Mitteln, wie schwachen Alkalien, mehrere Stunden bei Temperaturen bis zu 6o° C rührt.2. The method according to claim 1, characterized in that that the product obtained is in an aqueous medium with the addition of stabilizing active agents, such as weak alkalis, for several hours at temperatures of up to 60 ° C. In Betracht gezogene Druckschriften:
Deutsche Patentschrift Nr. 1 053 375.Considered publications:
German patent specification No. 1,053,375. ©209 637/4 8.72© 209 637/4 8.72
DEJ17580A 1960-01-23 1960-01-23 Process for the production of polyvinyl nitrate Expired DE977900C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEJ17580A DE977900C (en) 1960-01-23 1960-01-23 Process for the production of polyvinyl nitrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEJ17580A DE977900C (en) 1960-01-23 1960-01-23 Process for the production of polyvinyl nitrate

Publications (1)

Publication Number Publication Date
DE977900C true DE977900C (en) 1972-09-07

Family

ID=7199611

Family Applications (1)

Application Number Title Priority Date Filing Date
DEJ17580A Expired DE977900C (en) 1960-01-23 1960-01-23 Process for the production of polyvinyl nitrate

Country Status (1)

Country Link
DE (1) DE977900C (en)

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