CH132515A - Method for producing an elastic, rubber-like body. - Google Patents
Method for producing an elastic, rubber-like body.Info
- Publication number
- CH132515A CH132515A CH132515DA CH132515A CH 132515 A CH132515 A CH 132515A CH 132515D A CH132515D A CH 132515DA CH 132515 A CH132515 A CH 132515A
- Authority
- CH
- Switzerland
- Prior art keywords
- rubber
- sulfur
- elastic
- producing
- polysulphide
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/14—Polysulfides
- C08G75/16—Polysulfides by polycondensation of organic compounds with inorganic polysulfides
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Description
Verfahren zur Herstellung eines elastisehen, hautschukartigen Körpers. Im Hauptpatent ist ein Verfahren be schrieben, gemäss welchem man zu einem elastischen, kautschukartigen Körper gelangt, der sich zum Beispiel auch auf den in der Gummiindustrie gebräuchlichen Maschinen wie natürlicher Kautschuk verarbeiten, sowie mit Füllstoffen, zum Beispiel Zinkoxyd, Russ; Magnesia und so weiter, sowie mit na türlichem Kautschuk, Faktis, Regeneraten und so weiter mischen, formen und vulkani sieren lässt, wenn man Schwefel oder schwe felabgebende Stoffe auf Äthylendiehlorid in Gegenwart eines wässerigen, alkalischen, al koholischen oder andern Lösungsmittels zur Einwirkung bringt.
Es wurde nun gefunden, dass man zu einem ähnlichen Körper gelangt, wenn man in jenem Verfahren - statt Äthylendichlo- rid - ein Gemisch von Formaldehyd und Methylendibromid verwendet; auf das man Schwefel oder schwefelabgebende Substanzen in Polysulfidform, in der Wärme oder bei gewöhnlicher Temperatur, einwirken lässt. Das erhaltene Produkt ist ein kautschukarti ges elastischer, in Schwefelkohlenstoff lös licher Körper.
Beispiel: Auf 100 Teile einer wässerigen, alkoho lischen oder alkalischen Lösung, welche Schwefel enthält und zum Beispiel als Lösung von Schwefelcalcium in Polysulfidform da durch erhalten wird, dass man Kalkhydrat mit Schwefel und Wasser kocht und die Lösung filtriert, wird ein Gemisch von 3 Teilen Formaldehyd und 3 Teilen Methylendibromid unter Erwärmen zur Einwirkung gebracht. Es entsteht ein kautschukartiger elastischer Körper, der in Schwefelkoblenstoff löslich ist. Die Modifikation des angewandten Schwe fels wird bestimmend für den Grad der Lös lichkeit des gebildeten kautschukartigen Kör pers in Schwefelkohlenstoff.
Die Umwandlung kann auch bei gewöhnlicher Temperatur durch Stehenlassen während einiger Tage durchgeführt werden.
Process for the production of an elastic, skin-shoe-like body. The main patent describes a process according to which one arrives at an elastic, rubber-like body that can be processed, for example, on the machines commonly used in the rubber industry, such as natural rubber, and with fillers, for example zinc oxide, carbon black; Magnesia and so on, as well as mixing, shaping and vulcanizing with natural rubber, factice, regenerated material and so on, if sulfur or sulfur-releasing substances are brought to the effect on ethylene dichloride in the presence of an aqueous, alkaline, alcoholic or other solvent.
It has now been found that a similar body is obtained if in that process - instead of ethylene dichloride - a mixture of formaldehyde and methylene dibromide is used; on which sulfur or sulfur-releasing substances in polysulphide form are allowed to act in the heat or at ordinary temperature. The product obtained is a rubber-like elastic body, which is soluble in carbon disulfide.
Example: For 100 parts of an aqueous, alcoholic or alkaline solution which contains sulfur and is obtained, for example, as a solution of calcium sulfur in polysulphide form, by boiling hydrated lime with sulfur and water and filtering the solution, a mixture of 3 parts becomes Formaldehyde and 3 parts of methylenedibromide brought to action with heating. The result is a rubber-like elastic body that is soluble in carbon sulfide. The modification of the sulfur used determines the degree of solubility of the rubber-like body formed in carbon disulfide.
The conversion can also be carried out at ordinary temperature by allowing it to stand for a few days.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH132515T | 1927-10-15 | ||
CH127540T | 1927-10-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH132515A true CH132515A (en) | 1929-04-15 |
Family
ID=25710940
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH132515D CH132515A (en) | 1927-10-15 | 1927-10-15 | Method for producing an elastic, rubber-like body. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH132515A (en) |
-
1927
- 1927-10-15 CH CH132515D patent/CH132515A/en unknown
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