FI56861C - Foerfarande foer separering och tillvaratagande av oloesliga amnen fraon cellulosahaltiga loesningar - Google Patents

Foerfarande foer separering och tillvaratagande av oloesliga amnen fraon cellulosahaltiga loesningar Download PDF

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Publication number
FI56861C
FI56861C FI2972/73A FI297273A FI56861C FI 56861 C FI56861 C FI 56861C FI 2972/73 A FI2972/73 A FI 2972/73A FI 297273 A FI297273 A FI 297273A FI 56861 C FI56861 C FI 56861C
Authority
FI
Finland
Prior art keywords
solution
cellulose
amount
cellulosic
insoluble
Prior art date
Application number
FI2972/73A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI56861B (fi
Inventor
Edmund M Lapolla
Charles F Murphy
Arthur Sarkisian
Original Assignee
Itt
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 Itt filed Critical Itt
Publication of FI56861B publication Critical patent/FI56861B/fi
Application granted granted Critical
Publication of FI56861C publication Critical patent/FI56861C/fi

Links

Classifications

    • 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
    • B01D37/00—Processes of filtration
    • 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)
  • Compositions Of Macromolecular Compounds (AREA)
  • Artificial Filaments (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Filtering Materials (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
FI2972/73A 1972-10-13 1973-09-24 Foerfarande foer separering och tillvaratagande av oloesliga amnen fraon cellulosahaltiga loesningar FI56861C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29740672A 1972-10-13 1972-10-13
US29740672 1972-10-13

Publications (2)

Publication Number Publication Date
FI56861B FI56861B (fi) 1979-12-31
FI56861C true FI56861C (fi) 1980-04-10

Family

ID=23146189

Family Applications (1)

Application Number Title Priority Date Filing Date
FI2972/73A FI56861C (fi) 1972-10-13 1973-09-24 Foerfarande foer separering och tillvaratagande av oloesliga amnen fraon cellulosahaltiga loesningar

Country Status (8)

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

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
FI56861B (fi) 1979-12-31
FR2202896B1 (uk) 1977-05-27
JPS5325346B2 (uk) 1978-07-26
DE2350386A1 (de) 1974-04-25
CA983655A (en) 1976-02-17
BR7307863D0 (pt) 1974-07-18
FR2202896A1 (uk) 1974-05-10
JPS4974243A (uk) 1974-07-17
KR790001111B1 (ko) 1979-09-03
GB1416617A (en) 1975-12-03

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