DE294817C - - Google Patents

Info

Publication number
DE294817C
DE294817C DENDAT294817D DE294817DA DE294817C DE 294817 C DE294817 C DE 294817C DE NDAT294817 D DENDAT294817 D DE NDAT294817D DE 294817D A DE294817D A DE 294817DA DE 294817 C DE294817 C DE 294817C
Authority
DE
Germany
Prior art keywords
metals
sodium
parts
butadiene
polymerization
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.)
Active
Application number
DENDAT294817D
Other languages
German (de)
Publication of DE294817C publication Critical patent/DE294817C/de
Active legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F36/00Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
    • C08F36/02Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
    • C08F36/04Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT,PATENT OFFICE,

Im Patent 287787 ist ein Verfahren zur Darstellung von kautschukartigen Substanzen beschrieben, welches darin besteht, daß Butadien und seine Homologen mit Metallen, wie Natrium, bei Gegenwart von Kohlensäure behandelt werden.In patent 287787 is a method for the preparation of rubbery substances described, which consists in the fact that butadiene and its homologues with metals such as Sodium, to be treated in the presence of carbonic acid.

Es hat sich nun gezeigt, daß es unter Umständen vorteilhaft sein kann, Gemische oder Legierungen von Alkalimetallen unter sich oder mit anderen Metallen zu verwenden. Die Polymerisation kann in diesen Fällen rascher verlaufen als bei Verwendung von einzelnen Alkalimetallen. It has now been shown that it can be advantageous under certain circumstances, mixtures or To use alloys of alkali metals among themselves or with other metals. The polymerization can run faster in these cases than when using individual alkali metals.

. Beispiel 1.. Example 1.

100 Teile 2 · 3-Dimethyl-i · 3-butadien werden mit 5 Teilen feinem Natriumdraht und 5 Teilen Eisenfeilspänen in einem mit Kohlensäure gefüllten Gefäß etwa 3 bis 4 Tage geschüttelt, bis die ganze Masse in ein schwarzes voluminöses Produkt übergeführt ist; dieses wird durch Eintragen in Wasser, Alkohol o. dgl. von Alkalimetall und zugleich mechanisch von einem Teil des Eisens befreit; der Rest des letzteren kann durch Nachbehandeln mit Salzsäure entfernt werden.100 parts of 2 · 3-dimethyl-i · 3-butadiene will be with 5 parts of fine sodium wire and 5 parts of iron filings in a carbonated one Vessel shaken for about 3 to 4 days, until the whole mass turns into a black voluminous Product is transferred; this is done by adding it to water, alcohol or the like. from alkali metal and at the same time mechanically freed from some of the iron; the rest of the the latter can be removed by treating with hydrochloric acid.

Wendet man andere Metalle an, wie z. B. Zink, Zinn, Blei, Nickel usw., so kann man im wesentlichen in gleicher Weise arbeiten, ebenso wenn ein anderer Kohlenwasserstoff der Butadienreihe verwendet wird.If you use other metals, such as. B. zinc, tin, lead, nickel, etc., so you can work essentially in the same way, even if a different hydrocarbon the butadiene series is used.

Beispiel 2. ■ - . . tExample 2. ■ -. . t

100 Teile 2 · 3-Dimethyl-i · 3-butadien werden mit so viel flüssigem oder festem feingepulverten Natriumamalgam, als etwa 2 Teilen Natrium entspricht, in einer Kohlensäureatmosphäre einige Tage geschüttelt, bis die Masse schwarz und fest geworden ist. Nach dem Eintragen in Wasser usw. kann das weiß gewordene Produkt von dem noch anhaftenden Quecksilber durch Zentrifugieren befreit werden. Analog kann man bei Benutzung anderer Butadiene sowie anderer Natriumlegierungen, beispielsweise Bleinatrium, verfahren. .-■-..100 parts of 2 · 3-dimethyl-i · 3-butadiene are finely powdered with as much liquid or solid Sodium amalgam, equal to about 2 parts sodium, in a carbonic acid atmosphere Shaken for a few days until the mass has turned black and solid. After this The product which has become whitened can be removed from the still adhering product when it is added to water, etc. Mercury can be freed by centrifugation. Similarly, when using other butadienes and other sodium alloys, for example lead sodium, proceed. .- ■ - ..

Die nach vorliegendem Verfahren gewonnenen Produkte lassen sich ebenso wie diejenigen des Hauptpatents entsprechend dem Zusatzpatent 294816 zur Polymerisation weiterer Mengen von Butadienen benutzen.The products obtained by the present process can be just like those of the main patent corresponding to the additional patent 294816 for the polymerization of others Use amounts of butadienes.

Claims (1)

Patent-Anspruch:Patent claim: j Ausführungsform des Verfahrens des Pa-I tents 287787, darin bestehend, daß man /I Gemische. oder Legierungen von Alkali-I metallen unter sich oder mit anderen Me-I tallen verwendet und eventuell die erhal- |j ten en Produkte gemäß dem Verfahren des I Zusatzpatents 294816 zur Polymerisation I weiterer Mengen von Butadienkohlenwasserf stoffen benutzt.j embodiment of the method of Pa-I tents 287787, consisting in the fact that one / I mixtures. or alloys of alkali-I metals used among themselves or with other metals and possibly the | j th en products according to the process of I additional patent 294816 for polymerization I used other amounts of butadiene hydrocarbons.
DENDAT294817D Active DE294817C (en)

Publications (1)

Publication Number Publication Date
DE294817C true DE294817C (en)

Family

ID=549347

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT294817D Active DE294817C (en)

Country Status (1)

Country Link
DE (1) DE294817C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2994725A (en) * 1958-06-30 1961-08-01 Shell Oil Co Organic chemical reactions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2994725A (en) * 1958-06-30 1961-08-01 Shell Oil Co Organic chemical reactions

Similar Documents

Publication Publication Date Title
DE294817C (en)
AT69690B (en) Process for the preparation of rubbery substances.
DE507769C (en) Treatment of molten metals and alloys containing at least two different metals for the deposition of one or more of these metals by the use of oxidizing agents
DE1175442B (en) Process for the extraction of rhodium
DE2540100C2 (en) Use of a device for the continuous precipitation of cement copper from a copper solution mixed with pieces of iron
DE121801C (en)
DE78898C (en) Gas cleaning compound
DE96673C (en)
DE295124C (en)
DE315657C (en)
DE679371C (en) Process for the preparation of pressure hydrogenation residues for the contraception on iron
DE151589C (en)
Kenntnisstand 3.3 Elektrochemie in Schülerlaboren
DE17876C (en) Innovations in the process for the production of dinitrobenzene from luminous gas
DE356503C (en) Process for cleaning ores, especially graphite
DE891398C (en) Material for bearing shells, bushings, etc. like
DE232581C (en)
DE472212C (en) Process for the treatment of mineral oil and other oil mixtures, in particular for their separation into different components
DE207018C (en)
DE665187C (en) Process for cutting high gold, platinum-free or low-platinum cut material
DE671097C (en) Process for the production of nickel carbonyl
DE294136C (en)
DE14495C (en) Process for the preparation of aluminum by reducing aluminum sulfur with iron
DE307518C (en)
DE689258C (en) Process for separating nickel and copper