DE398251C - Process for the recovery of camphor from celluloid waste - Google Patents

Process for the recovery of camphor from celluloid waste

Info

Publication number
DE398251C
DE398251C DEO13500D DEO0013500D DE398251C DE 398251 C DE398251 C DE 398251C DE O13500 D DEO13500 D DE O13500D DE O0013500 D DEO0013500 D DE O0013500D DE 398251 C DE398251 C DE 398251C
Authority
DE
Germany
Prior art keywords
waste
camphor
celluloid
recovery
steam
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
DEO13500D
Other languages
German (de)
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.)
ODERBERGER CHEMISCHE WERKE AKT
Original Assignee
ODERBERGER CHEMISCHE WERKE AKT
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 ODERBERGER CHEMISCHE WERKE AKT filed Critical ODERBERGER CHEMISCHE WERKE AKT
Application granted granted Critical
Publication of DE398251C publication Critical patent/DE398251C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/78—Separation; Purification; Stabilisation; Use of additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/08—Cellulose derivatives
    • C08L1/16—Esters of inorganic acids
    • C08L1/18—Cellulose nitrate, i.e. nitrocellulose

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Processing Of Solid Wastes (AREA)

Description

Verfahren zur Wiedergewinnung des Kampfers aus Zelluloidabfällen. Die bei der Herstellung des Rohzelluloids oder auch bei der Zelluloidwarenfabrikation erhaltenen Abfälle gehen im allgemeinen wieder in die Fabrikation zurück. Das hat jedoch gewisse Nachteile, da die Nitrozellulose durch das wiederholte Anwärmen und die Behandlung mit chemischen Agenzien immer unstabiler wird. Kleinere Abfälle können schon wegen der in ihnen enthaltenen Verunreinigungen in dieser Weise nicht verwertet werden; man nimmt sie entweder in Lösungsmitteln auf (zur Herstellung von Klebstoffen, veredelnden Überzügen u. dgl.@ oder behandelt sie mit Wasserdampf, um den Kampfer wiederzugewinnen. Dabei wird jedoch nur ein Bruchteil des Kampfers abgetrieben.Process for the recovery of camphor from celluloid waste. The one in the manufacture of the raw celluloid or in the manufacture of celluloid goods Any waste received is generally returned to production. That has however, certain disadvantages, since the nitrocellulose by repeated heating and the treatment with chemical agents becomes more and more unstable. Smaller waste can not used in this way because of the impurities they contain will; they are either absorbed in solvents (for the production of adhesives, ennobling coatings and the like @ or treated with steam to remove the camphor to regain. However, only a fraction of the camphor is aborted.

Es wurde nun die überraschende Beobachtung gemacht, dah durch die Dampfbehandhmg möglich ist, den Kampfer fast quantitativ wiederzugewinnen, wenn man die Abfälle vorerst naß zerkleinert und in möglichst fein verteiltem Zustand mit Wasserdampf behandelt. Diese Zerkleinerung kann mit beliebigen Hilfsmitteln bekannter Art, beispielsweise durch Schleuderwirkung (Schleuderrad-Turbomischer), im Holländer oder in Schlagmühlen vorgenommen werden.The surprising observation was now made, then by the Steam treatment is possible to recover the camphor almost quantitatively, if the waste is first shredded wet and in as finely divided a state as possible treated with steam. This comminution can be done with any aids known type, for example by centrifugal effect (centrifugal turbo mixer), be made in the Hollander or in beater mills.

Das neue Verfahren eröffnet die Möglichkeit, Drehspäne, Hobelspäne und ähnliche verunreinigte Zelluloidabfälle wirtschaftlich zu verwerten; aber auch größere Abfälle können in dieser Weise durch Entziehung des ganzen Kampferinhaltes vorteilhafter als bisher ausgenutzt werden.The new process opens up the possibility of turning shavings and wood shavings and to recycle similar contaminated celluloid waste economically; but also larger waste can be produced in this way by removing the entire contents of the camphor can be used more advantageously than before.

Claims (1)

PATENT-ANsPRUcH: Verfahren zur Wiedergewinnung des Kampfers aus Zelluloidabfällen, wie Drehspäne, Hobelspäne u. dgl., durch Abtreiben mit Wasser dampf, dadurch gekennzeichnet, dah die Abfälle vor der Behandlung mit Wasserdampf in Vorrichtungen nach Art der Schlagmühlen auf nassem Wege stark zerkleinert werden.PATENT CLAIM: Process for the recovery of camphor from celluloid waste, such as turnings, wood shavings and the like, characterized by wiping with water vapor, then the waste before treatment with steam in devices of the type Beater mills are strongly comminuted on a wet path.
DEO13500D 1922-01-30 1923-01-28 Process for the recovery of camphor from celluloid waste Expired DE398251C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT398251X 1922-01-30

Publications (1)

Publication Number Publication Date
DE398251C true DE398251C (en) 1924-07-05

Family

ID=3673494

Family Applications (1)

Application Number Title Priority Date Filing Date
DEO13500D Expired DE398251C (en) 1922-01-30 1923-01-28 Process for the recovery of camphor from celluloid waste

Country Status (1)

Country Link
DE (1) DE398251C (en)

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