DE511540C - Process for removing liquid polymers from rubber-like synthetic materials - Google Patents

Process for removing liquid polymers from rubber-like synthetic materials

Info

Publication number
DE511540C
DE511540C DEF60242D DEF0060242D DE511540C DE 511540 C DE511540 C DE 511540C DE F60242 D DEF60242 D DE F60242D DE F0060242 D DEF0060242 D DE F0060242D DE 511540 C DE511540 C DE 511540C
Authority
DE
Germany
Prior art keywords
rubber
removing liquid
liquid polymers
synthetic materials
polymerization
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
DEF60242D
Other languages
German (de)
Inventor
Dr Curt Meisenburg
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEF60242D priority Critical patent/DE511540C/en
Priority claimed from GB2179826A external-priority patent/GB267808A/en
Application granted granted Critical
Publication of DE511540C publication Critical patent/DE511540C/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
    • C08C3/00—Treatment of coagulated rubber
    • C08C3/02—Purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Description

Verfahren zum Entfernen flüssiger Polymerisate aus kautschukartigen Kunstmassen Es ist bekannt, daß bei der Polymerisation von Butadienen mit oder ohne die Polymerisation beschleunigenden Mitteln neben kautschukartigen Massen stets mehr oder weniger große Mengen durch unangenehmen Geruch ausgezeichneter, bei der Vulkanisation schädlich wirkender, flüssiger Polymerisationsprodukte entstehen, die bisher äußerst schwer ohneSchädigung derKautschukmasse entfernt werden konnten.Process for removing liquid polymers from rubber-like polymers Artificial masses It is known that in the polymerization of butadienes with or without the polymerization accelerating agents in addition to rubber-like compounds more or less large quantities characterized by an unpleasant odor, in the case of Vulcanization of harmful liquid polymerization products occurs, which up to now have been extremely difficult to remove without damaging the rubber compound.

Es ist ferner bekannt, zum Geruchlosmachen von Gegenständen aus vulkanisiertem Kautschuk, z. B. Geldbörsen, Zigarrentaschen u. a. m., diese Gegenstände für sich oder in Gegenwart von Knochenkohle zu erwärmen (H o f f e r, Kautschuk und Guttapercha). Auch zur Entfernung von unangenehm riechenden Stoffen, die sich leicht an der Oberfläche des Kautschuks bilden, und von Lösungsmitteln, die bekanntlich für Kautschuk von niedrigem Siedepunkt sind, hat man Tierkohle vorgeschlagen. (Engl. Patent 1257/i866.) Es wurde nunmehr die bemerkenswerte Beobachtung gemacht, daß diese flüssigen Polym.erisate den kautschukartigen. Produkten leicht durch pulverförmige Substanzen, insbesondere aktive Kohle oder andere aktive Substanzen, evtl. durch gelindes Erwärmen mit oder ohne Vakuum entzogen werden können. Beispiel i Das durch Erwärmen von Isopren erhaltene Polymerisationsprodukt wird zu Fellen gewalzt, und diese werden alsdann mit der gleichen Gewichtsmenge aktiver Kohle 9 Stunden auf q.o° erwärmt. Das Polymerisationsprodukt ist nach dieser Operation vollkommen geruchlos und frei von flüssigem Polymerisat. Das Dimolekulare kann durch Wasserdampfbehandlung der A-Kohle gewonnen werden.It is also known for rendering vulcanized articles odorless Rubber, e.g. B. purses, cigar bags and others. m., these items for themselves or to be heated in the presence of charcoal (farm, rubber and gutta-percha). Also for removing unpleasant smelling substances that can easily be found on the surface of rubber form, and of solvents known for rubber from animal charcoal has been proposed. (Engl. Patent 1257/1866.) The remarkable observation has now been made that these liquid Polym.erisate the rubbery ones. Products easily due to powdery substances, in particular active charcoal or other active substances, possibly by warming gently with or can be withdrawn without a vacuum. Example i That obtained by heating isoprene Polymerization product is rolled into pelts, and these are then treated with the the same amount by weight of active charcoal heated to q.o ° for 9 hours. The polymerization product is completely odorless and free of liquid polymer after this operation. The dimolecular can be obtained by steam treatment of the activated charcoal.

Beispiel a Gleiche Gewichtsteile Isopren-Wärmekautschuk und aktive Kieselsäure werden 9 Stunden bei q.o bis 50° im Trockenschrank erwärmt. Das erhaltene Produkt ist so gut wie vollkommen geruchlos und frei von flüssigem Polymerisat.Example a Equal parts by weight of isoprene thermal rubber and active Silicic acid is heated in a drying cabinet at q.o to 50 ° for 9 hours. The received The product is almost completely odorless and free of liquid polymer.

Claims (1)

PATENTANSPRUCH: Verfahren zum Entfernen flüssiger Polymerisate aus den bei der Polymerisation von Butadienen entstehenden kautschukartigen Massen, darin bestehend, daß man die kautschukartigen Massen mit pulverförmigen, absorbierend wirkenden Stoffen, wie mit aktiver Kohle oder anderen aktiven Substanzen, behandelt.PATENT CLAIM: Process for removing liquid polymers from the rubber-like compounds formed during the polymerization of butadienes, consisting in that the rubber-like masses with powdery, absorbent active substances, such as with active charcoal or other active substances.
DEF60242D 1925-11-13 1925-11-13 Process for removing liquid polymers from rubber-like synthetic materials Expired DE511540C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF60242D DE511540C (en) 1925-11-13 1925-11-13 Process for removing liquid polymers from rubber-like synthetic materials

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEF60242D DE511540C (en) 1925-11-13 1925-11-13 Process for removing liquid polymers from rubber-like synthetic materials
GB2179826A GB267808A (en) 1926-09-03 1926-09-03 Process for the removal of liquid polymers from synthetic rubber

Publications (1)

Publication Number Publication Date
DE511540C true DE511540C (en) 1930-10-31

Family

ID=25977717

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF60242D Expired DE511540C (en) 1925-11-13 1925-11-13 Process for removing liquid polymers from rubber-like synthetic materials

Country Status (1)

Country Link
DE (1) DE511540C (en)

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