ATE139543T1 - Prozess zur abtrennung der wässrigen phase von zelluloseacetat - Google Patents

Prozess zur abtrennung der wässrigen phase von zelluloseacetat

Info

Publication number
ATE139543T1
ATE139543T1 AT92916353T AT92916353T ATE139543T1 AT E139543 T1 ATE139543 T1 AT E139543T1 AT 92916353 T AT92916353 T AT 92916353T AT 92916353 T AT92916353 T AT 92916353T AT E139543 T1 ATE139543 T1 AT E139543T1
Authority
AT
Austria
Prior art keywords
pct
aqueous phase
separating
acetic acid
cellulose acetate
Prior art date
Application number
AT92916353T
Other languages
English (en)
Inventor
Ghatta Hussain Al
Arianna Giovannini
Original Assignee
Sinco Eng Spa
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 Sinco Eng Spa filed Critical Sinco Eng Spa
Application granted granted Critical
Publication of ATE139543T1 publication Critical patent/ATE139543T1/de

Links

Classifications

    • 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
    • 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
    • B01D11/0203—Solvent extraction of solids with a supercritical fluid
    • 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
    • Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
AT92916353T 1991-07-29 1992-07-22 Prozess zur abtrennung der wässrigen phase von zelluloseacetat ATE139543T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI912103A IT1250713B (it) 1991-07-29 1991-07-29 Procedimento per la separazione della fase acquosa dall'acetato di cellulosa

Publications (1)

Publication Number Publication Date
ATE139543T1 true ATE139543T1 (de) 1996-07-15

Family

ID=11360454

Family Applications (1)

Application Number Title Priority Date Filing Date
AT92916353T ATE139543T1 (de) 1991-07-29 1992-07-22 Prozess zur abtrennung der wässrigen phase von zelluloseacetat

Country Status (13)

Country Link
US (1) US5667691A (de)
EP (1) EP0550732B1 (de)
JP (1) JPH06502214A (de)
KR (1) KR100235263B1 (de)
CN (1) CN1035382C (de)
AT (1) ATE139543T1 (de)
AU (1) AU664563B2 (de)
CA (1) CA2091758A1 (de)
DE (1) DE69211671T2 (de)
ES (1) ES2089544T3 (de)
IT (1) IT1250713B (de)
TW (1) TW211526B (de)
WO (1) WO1993003064A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5977348A (en) * 1997-07-25 1999-11-02 National Starch And Chemical Investment Holding Corporation Polysaccharide modification in densified fluid
WO2013028489A1 (en) * 2011-08-19 2013-02-28 Celanese International Corporation Acetylation of cellulose in densified gas
CN103304672B (zh) * 2013-06-19 2015-06-10 山东理工大学 超(亚)临界co2中制备醋酸纤维素的方法及其装置
WO2025245379A1 (en) * 2024-05-24 2025-11-27 University Of Washington Supercritical fluids regeneration of pfas-contaminated spent media and water treatment train
CN122079766A (zh) * 2026-04-23 2026-05-26 山东柠檬生化有限公司 一种基于超临界co2制备超高纯度一水柠檬酸的方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE332390C (de) * 1919-05-13 1921-02-02 Martin Lange Dr Verfahren und Vorrichtung zur Erzeugung synthetischer Edelsteine oder anderer Gebilde aus hochschmelzendem Material
FR1451503A (fr) * 1965-07-21 1966-01-07 Rhodiaceta Procédé de fabrication d'esters de cellulose
JPS567602A (en) * 1979-07-02 1981-01-26 Hitachi Ltd Production of porous separating membrane
US4250331A (en) * 1979-10-09 1981-02-10 E. I. Du Pont De Nemours And Company Removal of organic acids from dilute aqueous solutions of salts of organic acids by supercritical fluids
DE3323940A1 (de) * 1983-07-02 1985-01-10 Hoechst Ag, 6230 Frankfurt Verfahren zur reinigung von polymeren
US4770780A (en) * 1984-04-25 1988-09-13 Cf Systems Corporation Liquid CO2 /cosolvent extraction
JPH02292216A (ja) * 1989-05-02 1990-12-03 Mori Seiyu Kk 超臨界炭酸ガス抽出による医薬品類の脱溶剤方法
US5049235A (en) * 1989-12-28 1991-09-17 The Procter & Gamble Company Poly(methyl vinyl ether-co-maleate) and polyol modified cellulostic fiber

Also Published As

Publication number Publication date
AU2345892A (en) 1993-03-02
CA2091758A1 (en) 1993-01-30
US5667691A (en) 1997-09-16
ITMI912103A0 (it) 1991-07-29
IT1250713B (it) 1995-04-21
CN1070648A (zh) 1993-04-07
JPH06502214A (ja) 1994-03-10
KR100235263B1 (ko) 1999-12-15
WO1993003064A1 (en) 1993-02-18
DE69211671T2 (de) 1996-12-12
ES2089544T3 (es) 1996-10-01
EP0550732A1 (de) 1993-07-14
DE69211671D1 (de) 1996-07-25
EP0550732B1 (de) 1996-06-19
ITMI912103A1 (it) 1993-01-29
AU664563B2 (en) 1995-11-23
TW211526B (de) 1993-08-21
CN1035382C (zh) 1997-07-09
KR930702398A (ko) 1993-09-09

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Legal Events

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UEP Publication of translation of european patent specification
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