DE734744C - Process for the emulsion polymerization of butadienes - Google Patents

Process for the emulsion polymerization of butadienes

Info

Publication number
DE734744C
DE734744C DEI61149D DEI0061149D DE734744C DE 734744 C DE734744 C DE 734744C DE I61149 D DEI61149 D DE I61149D DE I0061149 D DEI0061149 D DE I0061149D DE 734744 C DE734744 C DE 734744C
Authority
DE
Germany
Prior art keywords
butadienes
polymerization
emulsion polymerization
nitrobenzimidazoles
same conditions
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
DEI61149D
Other languages
German (de)
Inventor
Dr Rudolf Seidler
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI61149D priority Critical patent/DE734744C/en
Application granted granted Critical
Publication of DE734744C publication Critical patent/DE734744C/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F36/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
    • C08F36/02—Homopolymers 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
    • C08F36/04—Homopolymers 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

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  • 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

Verfahren zur Emulsionspolymerisation von Butadienen Das Patent 70¢o39 betrifft ein -Verfahren. zur Emulsionspolymerisation von Butadienen für sich oder im Gemisch mit anderen, unter den gleichen Bedingungen polymerisierbaren organischen Verbindungen, bei dem man die Polymerisation in Gegenwart von Nitrogruppen enthaltenden Schiffschen Basen vornimmt.Process for the emulsion polymerization of butadienes The patent 70 [039] concerns a process. for emulsion polymerization of butadienes by themselves or mixed with other organic polymerizable under the same conditions Compounds in which the polymerization is carried out in the presence of nitro groups Schiff bases makes.

Es wurde gefunden, daß man wertvolle Emulsionspolymerisate aus Butadienen oder Mischungen dieser untereinander oder mit anderen, unter den gleichen Bedingungen polymerisierbaren organischen Verbindungen erhält, wenn man die Polymerisationin Gegenwart von Nitrobenzimidazolen, die einen Rest mit einer offenkettigen Kohlenstoffdoppelbindung enthalten, vornimmt. Nitrobenzimidazole dieser Art sind beispielsweise solche, die durch Kondensation von Nitrobenzimidazolen mit reaktionsfähiger Methyl : oder Methylengruppe mit einem Aldehyd erhältlich sind, z. B. 5-Nitro-2-styrylbenzimidazol, das durch Kondensation von Benzaldehyd mit 5-Nitro-2-methylbenzimidazol hergestellt werden kann.It has been found that valuable emulsion polymers made from butadienes can be obtained or mixtures of these with one another or with others, under the same conditions polymerizable organic compounds obtained when the polymerization in Presence of nitrobenzimidazoles, which are a radical with an open-chain carbon double bond contain, makes. Nitrobenzimidazoles of this type are, for example, those that by condensation of nitrobenzimidazoles with reactive methyl: or methylene group are available with an aldehyde, e.g. B. 5-nitro-2-styrylbenzimidazole, which by Condensation of benzaldehyde with 5-nitro-2-methylbenzimidazole can be produced can.

Der Zusatz der genannten Stoffe zu der Polymerisationsmischung bewirkt eine Beschleunigung der Polymerisation, eine Steigerung der Ausbeute an Polymerisat und gleichzeitig :eine Verbesserung der Eigenschaften der Polymerisate, insbesondere ihrer Beständigkeit gegen Oxydation und Weiterpolymerisation und damit ihrer Lagerfähigkeit. Die Nitrobenzimidazole mit einem Rest mit einer offenkettigen Kohlenstoffdoppelbindung können auch zusammen mit anderen Nitrogruppen enthaltenden Basen, z. B. N'itranilirien; 'veneendet werden. Man erhält dann Polymerisate, die sich durch besonders gute Festigkeit und Dehnung auszeichnen.The addition of the substances mentioned to the polymerization mixture has the effect an acceleration of the polymerization, an increase in the yield of polymer and at the same time: an improvement in the properties of the polymers, in particular their resistance to oxidation and further polymerisation and thus their shelf life. The nitrobenzimidazoles with a remainder with an open-chain carbon double bond can also be used together with other bases containing nitro groups, e.g. B. N'itranilirien; 'be veneended. Polymers are then obtained which have particularly good strength and elongation.

Die Polymerisation geschieht sonst in gleicher Weise wie nach dem Patent 704039 Am vorteilhaftesten arbeitet man bei Temperaturen von 50° und darüber. Beispiel Eine Emulsion von 8oo Teilen Butadien und 2 Teilen 5-Nitro-a-styrylbenzimidazol in einer Lösung von 5o Teilen dibutylnaphthalinsulfonsaurem Natrium in r ooo Teilen Wasser wird 4 bis 5 Tage lang bei 55° geschüttelt. Es entsteht dabei in nahezu quantitativer Ausbeute ein kautschukähnliches Polymerisationsprodukt. Unter gleichen Bedingungen, jedoch ohne Zusatz des Nitrostyrylbenzimidazols sind in der gleichen Zeit erst etwa 470;ö Butadien polymerisiert.The polymerization otherwise takes place in the same way as in patent 704039. It is most advantageous to work at temperatures of 50 ° and above. EXAMPLE An emulsion of 800 parts of butadiene and 2 parts of 5-nitro-α-styrylbenzimidazole in a solution of 50 parts of sodium dibutylnaphthalenesulfonate in 300 parts of water is shaken at 55 ° for 4 to 5 days. A rubber-like polymerisation product is formed in almost quantitative yield. Under the same conditions, but without the addition of the nitrostyrylbenzimidazole, only about 470% of butadiene are polymerized in the same time.

Claims (1)

PATENTANSPRUCH: Verfahren zur Emulsionspolymerisation von Butadienen für sich oder im Gemisch mit anderen, unter den gleichen Bedingungen polymerisierbaren organischen Verbindungen, dadurch gekennzeichnet, daß man die Polymerisation in Gegenwart von Nitrobenzimidazolen vornimmt, die einen Rest mit einer offenkettigen Kohlenstoffdoppelbindung enthalten.PATENT CLAIM: Process for emulsion polymerization of butadienes alone or in a mixture with others, polymerizable under the same conditions organic compounds, characterized in that the polymerization is carried out in Presence of nitrobenzimidazoles makes a residue with an open chain Contain carbon double bond.
DEI61149D 1938-02-14 1938-04-23 Process for the emulsion polymerization of butadienes Expired DE734744C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI61149D DE734744C (en) 1938-02-14 1938-04-23 Process for the emulsion polymerization of butadienes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE523130X 1938-02-14
DEI61149D DE734744C (en) 1938-02-14 1938-04-23 Process for the emulsion polymerization of butadienes

Publications (1)

Publication Number Publication Date
DE734744C true DE734744C (en) 1943-04-29

Family

ID=25945108

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI61149D Expired DE734744C (en) 1938-02-14 1938-04-23 Process for the emulsion polymerization of butadienes

Country Status (1)

Country Link
DE (1) DE734744C (en)

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