AT107580B - Process for the production of rubber with a large number of microscopic pores. - Google Patents

Process for the production of rubber with a large number of microscopic pores.

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Publication number
AT107580B
AT107580B AT107580DA AT107580B AT 107580 B AT107580 B AT 107580B AT 107580D A AT107580D A AT 107580DA AT 107580 B AT107580 B AT 107580B
Authority
AT
Austria
Prior art keywords
rubber
production
large number
microscopic pores
jelly
Prior art date
Application number
Other languages
German (de)
Inventor
Hermann Dr Beckmann
Original Assignee
Hermann Dr Beckmann
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 Hermann Dr Beckmann filed Critical Hermann Dr Beckmann
Application granted granted Critical
Publication of AT107580B publication Critical patent/AT107580B/en

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Description

  

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  Verfahren zur Herstellung von Kautschuk mit einer grossen Anzahl mikroskopisch kleiner Poren. 



   Im Stammpatent Nr. 106216 ist erwähnt, dass man statt der unmittelbaren Umwandlung in eine Galleite die Kautschukmilch auch zunächst in Form eines Breies erstarren lassen kann, welcher sich von selbst in einiger Zeit in eine homogene zusammenhängende Gallerte   vei wandelt. Durch   diese Arbeits- 
 EMI1.1 
 oder auszuwalzen, welche   Formstücke   nachher eine gallertartige Beschaffenheit annehmen und   schliesslich   durch leuchte Vulkanisation in hoch porösen festen Kautschuk übergeführt werden. Wichtig ist für die Wahl des Agglutinationsmittels, dass es nicht nur die Kautschukmilch in Breiform   überführt,   sondern auch lange in diesem Zustande belässt, damit genügend Zeit zur Formgebung vorhanden ist.

   Dieser Bedingung genügen nun, wie Versuche ergeben haben, in besonders hohem Grade   die Mangansalze, besonders   das   Mangansulfat.   Um zu verhindern, dass die Manganverbindungen auf den fertigen Gummi schädlich wirken, werden sie vor oder nach der Vulkanisation durch Auswaschen mit geeigneten Mitteln wieder entfernt. Es ist zwar nicht neu, dass bei dem Zufügen der bekannten Koagulationsmittel in kleinen Anteilen eine   allmähliche     E ! höhung   der   Viskosität   der Kautschukmilch bis zur Breifoirn eintritt, doch war hiebei nie der Übergang des Breies in die Form einer festen zusammenhängenden Gallerte beobachtet und diese Gallerte nicht unter Vermeidung der Wasserabgabe vulkanisiert worden. 



   Beispiel :   100 cm3 Kautschukmilch   werden mit   15 g Schwefelblumen vermischt   und mit   40 cm   einer   10% igen Mangansulfatlösung   unter Umrühren versetzt ; dabei entsteht ein dicker Brei, welcher in die Formen gestrichen wird. Nach ein bis zwei Stunden oder bei   Erwärmung   in kürzerer Zeit tritt die Umwandlung des Breies in eine feste homogene Gallerte ein, welche dann nach dem Verfahren des Stammpatentes weiterbehandelt wird. Unmittelbar vor der Vulkanisation oder auch danach wild der Gummikörper mit warmer verdünnter Schwefelsäure   gründlich   ausgelaugt und hierauf mit Wasser ausgewaschen. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



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  Process for the production of rubber with a large number of microscopic pores.



   In the parent patent no. 106216 it is mentioned that instead of the immediate conversion into a gall, the rubber milk can also initially solidify in the form of a pulp, which turns into a homogeneous, coherent gel after a while. Through this work
 EMI1.1
 or to roll out which shaped pieces later take on a gelatinous consistency and are finally converted into highly porous solid rubber by luminous vulcanization. When choosing the agglutinating agent, it is important that it not only converts the rubber milk into pulp form, but also leaves it in this state for a long time so that there is enough time for shaping.

   As experiments have shown, the manganese salts, especially manganese sulphate, satisfy this condition to a particularly high degree. In order to prevent the manganese compounds from having a damaging effect on the finished rubber, they are removed again before or after vulcanization by washing with suitable agents. It is not new that when the known coagulants are added in small amounts, a gradual E! Increase in the viscosity of the rubber milk until the pulp occurs, but the transition of the pulp into the form of a solid, coherent jelly was never observed and this jelly was not vulcanized while avoiding the release of water.



   Example: 100 cm3 of rubber milk are mixed with 15 g of sulfur flowers and 40 cm of a 10% manganese sulphate solution are added while stirring; this creates a thick paste which is spread into the molds. After one to two hours or a shorter time if heated, the pulp is transformed into a solid, homogeneous jelly, which is then further treated according to the method of the parent patent. Immediately before vulcanization or afterwards, the rubber body is thoroughly leached with warm dilute sulfuric acid and then washed out with water.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Herstellung von Kautschuk mit einer grossen Anzahl mikroskopisch kleiner Poren nach Stammpatent Nr. 106216 durch Umwandlung der mit Schwefel oder andern Vulkanisationsmitteln versetzten Kautschukmilch in eine homogene zusammenhängende Gallerte und feuchte Vulkanisation der letzteren unter Vermeidung von Wasserabgabe, dadurch gekennzeichnet, dass als Agglutinationsmittel Manganverbindungen, insbesondere Mangansulfat, verwendet werden. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the production of rubber with a large number of microscopic pores according to parent patent No. 106216 by converting the rubber milk mixed with sulfur or other vulcanizing agents into a homogeneous, coherent jelly and moist vulcanization of the latter while avoiding water release, characterized in that manganese compounds especially manganese sulfate can be used. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT107580D 1925-08-03 1926-08-19 Process for the production of rubber with a large number of microscopic pores. AT107580B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT106216T 1925-08-03
DE107580X 1925-09-01

Publications (1)

Publication Number Publication Date
AT107580B true AT107580B (en) 1927-10-25

Family

ID=29402283

Family Applications (1)

Application Number Title Priority Date Filing Date
AT107580D AT107580B (en) 1925-08-03 1926-08-19 Process for the production of rubber with a large number of microscopic pores.

Country Status (1)

Country Link
AT (1) AT107580B (en)

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