DE69211671D1 - Prozess zur abtrennung der wässrigen phase von zelluloseacetat - Google Patents

Prozess zur abtrennung der wässrigen phase von zelluloseacetat

Info

Publication number
DE69211671D1
DE69211671D1 DE69211671T DE69211671T DE69211671D1 DE 69211671 D1 DE69211671 D1 DE 69211671D1 DE 69211671 T DE69211671 T DE 69211671T DE 69211671 T DE69211671 T DE 69211671T DE 69211671 D1 DE69211671 D1 DE 69211671D1
Authority
DE
Germany
Prior art keywords
pct
aqueous phase
separating
acetic acid
cellulose acetate
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 - Fee Related
Application number
DE69211671T
Other languages
English (en)
Other versions
DE69211671T2 (de
Inventor
Ghatta Hussain Al
Arianna Giovannini
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.)
Sinco Engineering SpA
Original Assignee
Sinco Engineering 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 Engineering SpA filed Critical Sinco Engineering SpA
Publication of DE69211671D1 publication Critical patent/DE69211671D1/de
Application granted granted Critical
Publication of DE69211671T2 publication Critical patent/DE69211671T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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)
DE69211671T 1991-07-29 1992-07-22 Prozess zur abtrennung der wässrigen phase von zelluloseacetat Expired - Fee Related DE69211671T2 (de)

Applications Claiming Priority (2)

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
PCT/EP1992/001669 WO1993003064A1 (en) 1991-07-29 1992-07-22 Process for the separation of the aqueous phase from cellulose acetate

Publications (2)

Publication Number Publication Date
DE69211671D1 true DE69211671D1 (de) 1996-07-25
DE69211671T2 DE69211671T2 (de) 1996-12-12

Family

ID=11360454

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69211671T Expired - Fee Related DE69211671T2 (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 (3)

* 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

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
CN1070648A (zh) 1993-04-07
AU664563B2 (en) 1995-11-23
KR930702398A (ko) 1993-09-09
ITMI912103A1 (it) 1993-01-30
US5667691A (en) 1997-09-16
KR100235263B1 (ko) 1999-12-15
IT1250713B (it) 1995-04-21
ITMI912103A0 (it) 1991-07-29
DE69211671T2 (de) 1996-12-12
ES2089544T3 (es) 1996-10-01
EP0550732B1 (de) 1996-06-19
TW211526B (de) 1993-08-21
JPH06502214A (ja) 1994-03-10
EP0550732A1 (de) 1993-07-14
WO1993003064A1 (en) 1993-02-18
CA2091758A1 (en) 1993-01-30
CN1035382C (zh) 1997-07-09
AU2345892A (en) 1993-03-02
ATE139543T1 (de) 1996-07-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee