DE572157C - Process for the production of a water-resistant rubber particularly suitable for cable insulation - Google Patents

Process for the production of a water-resistant rubber particularly suitable for cable insulation

Info

Publication number
DE572157C
DE572157C DE1930572157D DE572157DD DE572157C DE 572157 C DE572157 C DE 572157C DE 1930572157 D DE1930572157 D DE 1930572157D DE 572157D D DE572157D D DE 572157DD DE 572157 C DE572157 C DE 572157C
Authority
DE
Germany
Prior art keywords
water
production
particularly suitable
resistant rubber
cable insulation
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
DE1930572157D
Other languages
German (de)
Inventor
Dipl-Ing Willy Zebrowski
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens 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 Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Application granted granted Critical
Publication of DE572157C publication Critical patent/DE572157C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
    • C08C4/00—Treatment of rubber before vulcanisation, not provided for in groups C08C1/00 - C08C3/02

Description

Verfahren zur Herstellung eines besonders für Kabelisolation geeigneten wasserbeständigen Kautschuks Bekanntlich konnte für viele Zwecke der Elektrotechnik, insbesondere für Seekabelzwecke, der übliche Kautschuk wegen seiner hygroskopischen Eigenschaften nicht verwendet werden. Diese hygroskopischen Eigenschaften sind mit großer Wahrscheinlichkeit durch die im Kautschuk vorhandenen löslichen bzw. quellbaren Eiweißkörper bedingt. Um diese Eiweißkörper aus dem Kautschuk zu entfernen, hat man bereits vorgeschlagen, Rohkautschuk durch Waschen mit Wasser bei erhöhter Temperatur zu behandeln. Dieses Verfahren ist, abgesehen davon,- daß die angestrebte Wirkung in nicht ausreichendem Maße erzielt wird, sehr umständlich und hat außerdem den Nachteil, daß durch das Fehlen der Eiweißstoffe die Vulkanisation erschwert wird.Process for the production of a particularly suitable for cable insulation water-resistant rubber It is well known that for many purposes in electrical engineering, especially for submarine cable purposes, the usual rubber because of its hygroscopic properties Properties are not used. These hygroscopic properties are with high probability due to the soluble or swellable substances present in the rubber Protein bodies conditional. In order to remove these protein bodies from the rubber, one has to it has already been proposed to wash raw rubber with water at an elevated temperature to treat. Apart from that, this procedure is - that the desired effect is not achieved to a sufficient extent, very cumbersome and also has the Disadvantage that vulcanization is made more difficult by the lack of protein substances.

Gemäß der Erfindung erhält man einen für Isolationszwecke, insbesondere für Fernmeldezwecke, sehr geeigneten Kautschuk, der die Nachteile des gewaschenen Kautschuks bei der Vulkanisation nicht aufweist, indem man die im Rohkautschuk enthaltenen Eiweißstoffe mit Formalin koaguliert und dadurch wasserunlöslich macht. Die Eiweißstoffe bleiben daher im Rohkautschuk für die Vulkanisation erhalten.According to the invention one obtains one for isolation purposes, in particular for telecommunication purposes, very suitable rubber, which has the disadvantages of the washed Rubber does not exhibit during vulcanization by removing the content contained in the raw rubber Protein substances are coagulated with formalin and thereby render them insoluble in water. The protein substances therefore remain in the raw rubber for vulcanization.

Eine besonders zweckmäßige Ausführungsform des Verfahrens nach der Erfindung besteht darin, daß man den gerissenen Rohkautschuk in einer wäßrigen Formalinlösung "bei Zimmertemperatur lagern läßt, nach der Härtung der Eiweißkörper trocknet und dann in bekannter Weise normal weiterverarbeitet, d. h. nach Zusatz von Vulkanisationsmitteln und gegebenenfalls von Füllstoffen vulkanisiert. Das dadurch erhaltene Erzeugnis ist gegen Wasser völlig unempfindlich und stellt einen der Guttapercha gleichwertigen Isolierstoff dar.A particularly useful embodiment of the method according to Invention consists in that the cracked raw rubber in an aqueous formalin solution "Can be stored at room temperature, after hardening the protein body dries and then processed normally in a known manner, d. H. after adding vulcanizing agents and optionally vulcanized by fillers. The product thus obtained is completely insensitive to water and is equivalent to gutta-percha Insulating material.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines besonders für Kabelisokation geeigneten wasserbeständigen Kautschuks; dadurch gekennzeichnet, daß man die im Rohkautschuk enthaltenen Eiweißstoffe mit Formalin koagulieit und den Rohkautschuk in bekannter Weise weiterverarbeitet. PATENT CLAIM: Process for the production of a water-resistant rubber particularly suitable for cable isolation; characterized in that the proteins contained in the raw rubber are coagulated with formalin and the raw rubber is further processed in a known manner.
DE1930572157D 1930-08-30 1930-08-30 Process for the production of a water-resistant rubber particularly suitable for cable insulation Expired DE572157C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE572157T 1930-08-30

Publications (1)

Publication Number Publication Date
DE572157C true DE572157C (en) 1933-03-11

Family

ID=6569003

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930572157D Expired DE572157C (en) 1930-08-30 1930-08-30 Process for the production of a water-resistant rubber particularly suitable for cable insulation

Country Status (1)

Country Link
DE (1) DE572157C (en)

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