CH132513A - Method for producing an elastic rubber-like body. - Google Patents
Method for producing an elastic rubber-like body.Info
- Publication number
- CH132513A CH132513A CH132513DA CH132513A CH 132513 A CH132513 A CH 132513A CH 132513D A CH132513D A CH 132513DA CH 132513 A CH132513 A CH 132513A
- Authority
- CH
- Switzerland
- Prior art keywords
- sulfur
- rubber
- producing
- elastic rubber
- elastic
- 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)
Description
Verfahren zur Herstellung eines elastischen kautschukartigen 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, so wie mit Füllstoffen, z. B. Zinkoxyd, Russ, Magnesia usw., sowie mit natürlichem Kaut schuk, Faktis, Regeneraten usw. mischen, formen und vulkanisieren lässt, wenn man Schwefel oder schwefelabgebende Stoffe auf Äthylendichlorid in Gegenwart eines wässe rigen, alkalischen, alkoholischen oder andern Lösungsmittels zur Einwirkung bringt.
Es wurde nun gefunden, dass man zu einem ähnlichen Körper gelangt, wenn man in jenem Verfahren - statt Äthylendi- chlorid - ein Gemisch von Formaldehyd und Methylendichlorid verwendet, auf das man Schwefel oder schwefelabgebende Sub stanzen in Polysulfidform, in der Wärme oder bei gewöhnlicher Temperatur, einwirken lässt. Das erhaltene Produkt ist ein kautschuk- artiger, elastischer, in Schwefelkohlenstoff lös licher Körper.
<I>Beispiel</I> Auf 100 Teile einer wässerigen, alkoholi schen oder alkalischen Lösung, welche Schwe fel enthält und zum Beispiel als Lösung von Schwefelcalcium in Polysulfidform dadurch erhalten wird, dass man Kalkhydrat mit Schwefel und Wasser kocht und die Lösung filtriert, wird ein Gemisch von 3 Teilen For maldehyd und 3 Teilen Methylendichlorid unter Erwärmen zur Einwirkung gebracht. Es entsteht ein kautschukartiger, elastischer Körper, der in Schwefelkohlenstoff löslich ist. Die Modifikation des angewandten Schwefels wird bestimmend für den Grad der Löslich keit des gebildeten kautschukartigen Körpers in Schwefelkohlenstoff.
Die Umwandlung kann auch bei gewöhnlicher Temperatur durch Stehenlassen während einiger Tage durchgeführt werden.
Method for producing an elastic rubber-like body. In the main patent, a method is be written, 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, as with fillers, e.g. B. zinc oxide, soot, magnesia, etc., as well as with natural rubber, factice, regenerates, etc. mix, shape and vulcanize if you can act on sulfur or sulfur-releasing substances on ethylene dichloride in the presence of an aqueous, alkaline, alcoholic or other solvent brings.
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 dichloride is used, on which sulfur or sulfur-releasing substances are punched in polysulphide form, in the heat or at ordinary temperature to act. The product obtained is a rubber-like, elastic body that is soluble in carbon disulfide.
<I> Example </I> To 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 of formaldehyde and 3 parts of methylene dichloride is brought into action with heating. The result is a rubber-like, elastic body that is soluble in carbon disulfide. 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 |
---|---|---|---|
CH132513T | 1927-10-15 | ||
CH127540T | 1927-10-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH132513A true CH132513A (en) | 1929-04-15 |
Family
ID=25710938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH132513D CH132513A (en) | 1927-10-15 | 1927-10-15 | Method for producing an elastic rubber-like body. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH132513A (en) |
-
1927
- 1927-10-15 CH CH132513D patent/CH132513A/en unknown
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