DE924398C - Process for the comminution of film-shaped, non-thermoplastic cellulose ethers - Google Patents

Process for the comminution of film-shaped, non-thermoplastic cellulose ethers

Info

Publication number
DE924398C
DE924398C DEK4379D DEK0004379D DE924398C DE 924398 C DE924398 C DE 924398C DE K4379 D DEK4379 D DE K4379D DE K0004379 D DEK0004379 D DE K0004379D DE 924398 C DE924398 C DE 924398C
Authority
DE
Germany
Prior art keywords
film
cellulose ethers
shaped
comminution
thermoplastic cellulose
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
DEK4379D
Other languages
German (de)
Inventor
Wolfgang Dr Lenhard
Heinrich Dr Teutscher
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.)
Kalle GmbH and Co KG
Original Assignee
Kalle GmbH and Co KG
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 Kalle GmbH and Co KG filed Critical Kalle GmbH and Co KG
Priority to DEK4379D priority Critical patent/DE924398C/en
Application granted granted Critical
Publication of DE924398C publication Critical patent/DE924398C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
    • C08B1/02—Rendering cellulose suitable for esterification
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Description

Verfahren zum Zerkleinern von folienförmigen, nicht thermoplastischen Celluloseäthern Zusatz zum Patent 862832 Das Patent 862 832 betrifft ein Verfahren zum Zerkleinern von folienförmiger regenerierter Cellulose. Dieses Verfahren besteht darin, daß man das zu zerkleinernde Material durch Einwirkung eines hohen Quetschdruckes in eine spröde und brüchige Masse überführt und diese mittels üblicher Zerkleinerungsvorrichtungen zerkleinert.Process for comminuting sheet-like, non-thermoplastic Cellulose ethers additive to patent 862832 Patent 862,832 relates to a method for cutting up regenerated cellulose in film form. This procedure exists in that the material to be crushed by the action of a high squeezing pressure converted into a brittle and fragile mass and this by means of conventional crushing devices crushed.

Es ist nun gefunden worden, daß man in der im Hauptpatent beschriebenen Art und Weise auch Folien aus nicht thermoplastischen Celluloseäthern, d. h. wasserlöslichen sowie wasserunlöslichen, alkalilöslichen Celluloseäthern, zerkleinern kann. Das dabei erhaltene Material, welches die Form feiner Flitter hat, läßt sich leicht in Wasser bzw. Alkalilauge auflösen und kann dann beliebigen technischen Verwendungszwecken zugeführt werden. It has now been found that one described in the main patent Also films made from non-thermoplastic cellulose ethers, d. H. water soluble as well as water-insoluble, alkali-soluble cellulose ethers. That The material obtained in this way, which is in the form of fine tinsel, can be easily removed Dissolve in water or alkali and can then be used for any technical purpose are fed.

Die Zerkleinerung von folienförmigen Celluloseäthern, welche sich nach den üblichen Methoden nicht einwandfrei durchführen läßt, hat einerseits für die Aufarbeitung von Folienabfällen Bedeutung und eröffnet im übrigen einen Weg zur Herstellung von besonders leicht auflösbaren Celluloseäthern. The crushing of film-shaped cellulose ethers, which can not be carried out properly according to the usual methods, has on the one hand for the processing of film waste is important and opened in the rest a way of producing cellulose ethers that are particularly easy to dissolve.

Beispiel Abfälle eines etwa 0,02 bis 0,04 mm starken Films aus wasserunlöslicher, alkalilösl:icher MethylceLlulose mit einem Methoxylgehalt von etwa 6 bis 8 O/o werden in der im Beispiel des Hauptpatents beschriebenen Weise einer Kalanderbehandtung unterworfen. Die dabei erhaltenen opaken Krusten werden in einer Kugelmühle oder in einer ähnlichen Zerkleinerungsvorrichtung behandelt, wobei sie schnell zu feinen Flittern zerfallen. In derselben Weise kann beispielsweise eine Folie aus wasserlöslicher Methylcellulose zerkleinert werden. Example waste of an approximately 0.02 to 0.04 mm thick film of water-insoluble, Alkaline-soluble methylcellulose with a methoxyl content of about 6 to 8% in the manner of a calender handling described in the example of the main patent subject. The resulting opaque crusts are in a ball mill or treated in a similar crusher, quickly becoming fine Flitter disintegrate. In the same way, for example, a film made of water-soluble Methyl cellulose can be crushed.

Claims (1)

PATENTANSPRUCH: Anwendung des im Patent 862 832 beschriebenen Zerkleinerungsverfahrens zum Zerkleinern von folienförmigen, nicht thermoplastischen Celluloseäthern. PATENT CLAIM: Use of the comminution process described in patent 862 832 for shredding film-shaped, non-thermoplastic cellulose ethers. Angezogene Druckschriften: Deutsche Patentschrift Nr. 5I8 241. Referenced publications: German patent specification No. 5I8 241.
DEK4379D 1943-07-06 1943-07-06 Process for the comminution of film-shaped, non-thermoplastic cellulose ethers Expired DE924398C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK4379D DE924398C (en) 1943-07-06 1943-07-06 Process for the comminution of film-shaped, non-thermoplastic cellulose ethers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK4379D DE924398C (en) 1943-07-06 1943-07-06 Process for the comminution of film-shaped, non-thermoplastic cellulose ethers

Publications (1)

Publication Number Publication Date
DE924398C true DE924398C (en) 1955-03-03

Family

ID=7210323

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK4379D Expired DE924398C (en) 1943-07-06 1943-07-06 Process for the comminution of film-shaped, non-thermoplastic cellulose ethers

Country Status (1)

Country Link
DE (1) DE924398C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1218141B (en) * 1957-05-07 1966-06-02 Boris Carnaut Process for the production of sheets or foils from cores of thermoplastics

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE518241C (en) * 1925-08-14 1931-02-13 I G Farbenindustrie Akt Ges Process for the production of masses or structures from partially or wholly water-soluble alkyl celluloses

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE518241C (en) * 1925-08-14 1931-02-13 I G Farbenindustrie Akt Ges Process for the production of masses or structures from partially or wholly water-soluble alkyl celluloses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1218141B (en) * 1957-05-07 1966-06-02 Boris Carnaut Process for the production of sheets or foils from cores of thermoplastics

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