DE208290C - - Google Patents

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Publication number
DE208290C
DE208290C DENDAT208290D DE208290DA DE208290C DE 208290 C DE208290 C DE 208290C DE NDAT208290 D DENDAT208290 D DE NDAT208290D DE 208290D A DE208290D A DE 208290DA DE 208290 C DE208290 C DE 208290C
Authority
DE
Germany
Prior art keywords
rubber
sulfur
aniline
processed
weight
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
DENDAT208290D
Other languages
German (de)
Publication date
Application granted granted Critical
Publication of DE208290C publication Critical patent/DE208290C/de
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00Recovery or working-up of waste materials
    • C08J11/04Recovery or working-up of waste materials of polymers
    • C08J11/10Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • C08J11/18Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material
    • C08J11/28Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic compounds containing nitrogen, sulfur or phosphorus
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2321/00Characterised by the use of unspecified rubbers
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/62Plastics recycling; Rubber recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Description

3ia\*eti'\ cjjcii c?a\'c η l'ct ι η Ι*. 3ia \ * eti '\ cjjcii c? A \' c η l'ct ι η Ι *.

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

- Jig 208290 KLASSE 39 δ. GRUPPE- Jig 208290 CLASS 39 δ. GROUP

ADOLF GENTZSCH in WIEN.ADOLF GENTZSCH in VIENNA.

Die bisherigen Versuche, den Kautschuk aus hart oder brüchig oder sonstwie unbrauchbar .gewordenem vulkanisierten Altgummi wiederzugewinnen, gipfelten in dem Bestreben, hauptsächlich den Schwefel aus der zu verarbeitenden Masse ganz oder teilweise dadurch zu entfernen, daß man den Kautschuk in einem geeigneten Lösungsmittel von ungefähr dem fünf- bis dreißigfachen Gewichte des ίο Kautschuks löste, um zunächst den Schwefel abzuscheiden und dann den Kautschuk durch Verdampfen des Lösungsmittels wiederzuge-, winnen. Es ist ferner bekannt,- das_ Lösungs- \ ^ mittel des KautschuJ<smderMasse zu be-*The previous attempts to recover the rubber from hard or brittle or otherwise unusable .gewordenem vulcanized old rubber culminated in the effort to remove mainly the sulfur from the mass to be processed in whole or in part by the rubber in a suitable solvent of approximately the five to thirty times the weight of the ίο rubber dissolved in order to first deposit the sulfur and then to recover the rubber by evaporating the solvent. It is distant r known - das_ solution \ ^ medium of KautschuJ <smderMasse to loading *

■ Eäl3sieren~"(vgirz'. B. Patentschrift 109827).■ El3sieren ~ "(see e.g. patent specification 109827).

""Gemäß vorliegender Erfindung wird im Gegensatze zu den bisherigen Arbeitsweisen der zerkleinerte oder pulverisierte Altgummi nicht mit dem fünf- bis dreißigfachen- Gewichte, sondern nur mit ungefähr dem fünften bis zehnten Teil des Kautschukgewichtes mit Anilin innig gemengt und — sei es in offenen oder geschlossenen Gefäßen —■ behufs Erweichung des Kautschuks zweckmäßig mit Hilfe eines öl- oder Luft-, Dampf- oder Sandbades während ungefähr 1^ bis %j/t Stunden (je nach der zu verarbeitenden Menge) auf eine Temperatur von etwa 130 bis 160 ° C.According to the present invention, in contrast to previous working methods, the crushed or pulverized scrap rubber is intimately mixed with aniline not with five to thirty times the weight, but only with approximately fifth to tenth part of the rubber weight and - be it in open or closed vessels - ■ behufs softening the rubber appropriate with the aid of an oil or air, steam or sand bath for about 1 ^ j to% / t hours (depending on the amount to be processed) to a temperature of about 130 to 160 ° C.

gebracht. Das weich gewordene Gemenge wird nun in üblicher Weise auf den bekannten Mischwalzen verarbeitet und ergibt ein Produkt, welches dem frischen Gummi sowohl hinsichtlich seiner Elastizität als auch aller übrigen Eigenschaften kaum nachsteht. Desgleichen läßt sich dieses neue Material in üblicher Weise ohne — oder mit nur geringen Mengen — Schwefel wieder vulkanisieren und — was wohl am meisten in die Wagschale fällt — läßt sich auch solch wiedergewonnener Gummi nach abermaligem Unbrauchbarwerden neuerdings der beschriebenen Behandlung unterwerfen und ist neuerdings ohne Schwefelzusatz wieder vulkanisierbar.brought. The mixture that has become softened is now converted to the known one in the usual way Mixing rollers are processed and result in a product that both the fresh rubber In terms of its elasticity and all other properties, it is hardly inferior. Likewise can this new material in the usual way without - or with only a small amount Quantities - vulcanize sulfur again and - which probably falls into the balance the most - Such recovered rubber can also be used recently after it has become unusable again subject to the treatment described and is now vulcanizable again without the addition of sulfur.

Es sei betont, daß die Anilinbasen wohlfls bekannte Lösungsipittel für Kautschuk sind J | (vgl. z. B. Patentschrift 99689), doch auch wieder' !i in den erwähnten großen Mengen, nicht aber wie bei vorliegender Erfindung in so geringen Mengen und in dem Bestreben, nicht denί Kautschuk, sondern vielmehr den Schwefel; für die Dauer der Regenerierungsarbeit in: Lösung zu bringen.It should be emphasized that the aniline bases are well known solvents for rubber (.. see, for example Patent 99689), but again 'i in the aforementioned large quantities, but not as in the present invention in such small quantities and in order not denί rubber, but rather the sulfur!; for the duration of the regeneration work in : to bring solution.

Claims (1)

Pate nt-A N SPRU c η :Pate nt-A N SPRU c η: 5555 Verfahren zum Wiederbrauchbarmachen vulkanisierter Kautschukabfälle, darin bestehend, daß man den Altkautschuk mit einer dem fünften bis zehnten Teil des Kautschukgewichts entsprechenden Menge Anilin mischt und hierauf das Ganze zweckmäßig durch Erwärmen erweicht.A method of making vulcanized rubber waste recyclable, comprising that the old rubber with a fifth to tenth part of the rubber weight corresponding amount Mixes aniline and then expediently softened the whole thing by heating.
DENDAT208290D Expired DE208290C (en)

Publications (1)

Publication Number Publication Date
DE208290C true DE208290C (en) 1900-01-01

Family

ID=470334

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT208290D Expired DE208290C (en)

Country Status (1)

Country Link
DE (1) DE208290C (en)

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