DE2350386A1 - Verfahren zur filtration von zelluloseloesungen - Google Patents

Verfahren zur filtration von zelluloseloesungen

Info

Publication number
DE2350386A1
DE2350386A1 DE19732350386 DE2350386A DE2350386A1 DE 2350386 A1 DE2350386 A1 DE 2350386A1 DE 19732350386 DE19732350386 DE 19732350386 DE 2350386 A DE2350386 A DE 2350386A DE 2350386 A1 DE2350386 A1 DE 2350386A1
Authority
DE
Germany
Prior art keywords
solution
cellulose
undissolved
filtration
solvent
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.)
Pending
Application number
DE19732350386
Other languages
German (de)
English (en)
Inventor
Edmund M Lapolla
Charles F Murphy
Arthur Sarkisian
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.)
TDK Micronas GmbH
Original Assignee
Deutsche ITT Industries GmbH
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 Deutsche ITT Industries GmbH filed Critical Deutsche ITT Industries GmbH
Publication of DE2350386A1 publication Critical patent/DE2350386A1/de
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B11/00—Preparation of cellulose ethers
    • C08B11/20—Post-etherification treatments of chemical or physical type, e.g. mixed etherification in two steps, including purification
    • C08B11/22—Isolation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/02—Solvent extraction of solids
    • B01D11/0288—Applications, solvents
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B3/00—Preparation of cellulose esters of organic acids
    • C08B3/22—Post-esterification treatments, including purification
    • C08B3/26—Isolation of the cellulose ester
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B9/00—Cellulose xanthate; Viscose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/08—Regeneration of the filter
    • B01D2201/085—Regeneration of the filter using another chemical than the liquid to be filtered
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/582—Recycling of unreacted starting or intermediate materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Filtering Materials (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Artificial Filaments (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
DE19732350386 1972-10-13 1973-10-08 Verfahren zur filtration von zelluloseloesungen Pending DE2350386A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29740672A 1972-10-13 1972-10-13

Publications (1)

Publication Number Publication Date
DE2350386A1 true DE2350386A1 (de) 1974-04-25

Family

ID=23146189

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19732350386 Pending DE2350386A1 (de) 1972-10-13 1973-10-08 Verfahren zur filtration von zelluloseloesungen

Country Status (8)

Country Link
JP (1) JPS5325346B2 (ja)
KR (1) KR790001111B1 (ja)
BR (1) BR7307863D0 (ja)
CA (1) CA983655A (ja)
DE (1) DE2350386A1 (ja)
FI (1) FI56861C (ja)
FR (1) FR2202896B1 (ja)
GB (1) GB1416617A (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188558A (en) * 1986-04-07 1987-10-07 Plenty Ltd Filter medium

Also Published As

Publication number Publication date
FI56861C (fi) 1980-04-10
GB1416617A (en) 1975-12-03
BR7307863D0 (pt) 1974-07-18
FR2202896A1 (ja) 1974-05-10
JPS5325346B2 (ja) 1978-07-26
FI56861B (fi) 1979-12-31
KR790001111B1 (ko) 1979-09-03
FR2202896B1 (ja) 1977-05-27
CA983655A (en) 1976-02-17
JPS4974243A (ja) 1974-07-17

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Legal Events

Date Code Title Description
OHA Expiration of time for request for examination