CA2260782A1 - Production de carbamate de cellulose - Google Patents

Production de carbamate de cellulose Download PDF

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Publication number
CA2260782A1
CA2260782A1 CA002260782A CA2260782A CA2260782A1 CA 2260782 A1 CA2260782 A1 CA 2260782A1 CA 002260782 A CA002260782 A CA 002260782A CA 2260782 A CA2260782 A CA 2260782A CA 2260782 A1 CA2260782 A1 CA 2260782A1
Authority
CA
Canada
Prior art keywords
cellulose
urea
pressure
mixture
liquid ammonia
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.)
Abandoned
Application number
CA002260782A
Other languages
English (en)
Inventor
Ties Karstens
Armin Stein
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.)
Cerdia Produktions GmbH
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2260782A1 publication Critical patent/CA2260782A1/fr
Abandoned legal-status Critical Current

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Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
    • C08B15/05—Derivatives containing elements other than carbon, hydrogen, oxygen, halogens or sulfur
    • C08B15/06—Derivatives containing elements other than carbon, hydrogen, oxygen, halogens or sulfur containing nitrogen, e.g. carbamates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

L'invention concerne un procédé de production de carbamate de cellulose selon lequel: (a) on met de la cellulose en contact avec de l'amoniaque à une pression initiale supérieure à la pression atmosphérique et à une température d'au moins environ 25 ·C, en présence d'urée, la quantité d'amoniaque étant suffisante au moins pour mouiller la surface de la cellulose; (b) on augmente le volume disponible pour le système cellulose-urée-amoniaque de façon explosive, en abaissant la pression d'au moins 5 bars, et on obtient un mélange activé de cellulose et d'urée; (c) le mélange activé de cellulose et d'urée est absorbé dans un porteur de réaction organique inerte, et chauffé jusqu'à une température comprise entre environ 110 ·C et 150 ·C, pour produire du carbamate de cellulose; et (d) le porteur de réaction organique et, éventuellement, l'urée n'ayant pas réagi sont éliminés du carbamate de cellulose obtenu. Ce procédé permet d'économiser de l'énergie et d'obtenir un carbamate de cellulose très homogène.
CA002260782A 1996-07-12 1997-07-08 Production de carbamate de cellulose Abandoned CA2260782A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19628277A DE19628277C2 (de) 1996-07-12 1996-07-12 Verfahren zur Aktivierung eines Cellulose und Harnstoff enthaltenden Gemisches, aktiviertes Cellulose und Harnstoff enthaltendes Gemisch und Verwendung des aktivierten Gemisches zur Herstellung von Cellulosecarbamat
DE19628277.2 1996-07-12
PCT/EP1997/003593 WO1998002464A1 (fr) 1996-07-12 1997-07-08 Production de carbamate de cellulose

Publications (1)

Publication Number Publication Date
CA2260782A1 true CA2260782A1 (fr) 1998-01-22

Family

ID=7799739

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002260782A Abandoned CA2260782A1 (fr) 1996-07-12 1997-07-08 Production de carbamate de cellulose

Country Status (10)

Country Link
EP (1) EP0910585A1 (fr)
JP (1) JP2000505135A (fr)
AU (1) AU3443497A (fr)
BR (1) BR9710297A (fr)
CA (1) CA2260782A1 (fr)
CZ (1) CZ4199A3 (fr)
DE (1) DE19628277C2 (fr)
PL (1) PL331046A1 (fr)
TR (1) TR199900025T2 (fr)
WO (1) WO1998002464A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19715617A1 (de) * 1997-04-15 1998-10-22 Zimmer Ag Verfahren für die modifizierte Herstellung von Cellulosecarbamat
DE19742692A1 (de) * 1997-09-26 1999-04-01 Rhodia Acetow Ag Verfahren zur Aktivierung von Polysacchariden
US6416621B1 (en) 1998-03-13 2002-07-09 Rhodia Acetow Gmbh Apparatus, process and pressure reactor for the treatment of solids with pressurized liquid gases
DE19814137A1 (de) * 1998-03-30 1999-10-14 Rhodia Acetow Ag Verfahren zum Austreiben von Ammoniak aus einem aktivierten Polysaccharid
DE19835688A1 (de) * 1998-08-07 2000-02-10 Piesteritz Stickstoff Verfahren zur Herstellung von Cellulosecarbamat
DE10023753A1 (de) * 2000-05-15 2001-11-29 Zimmer Ag Verfahren und Vorrichtung zur Behandlung von Zellstoff mit Harnstoff und Ammoniak
DE10223172B4 (de) * 2002-05-24 2004-05-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zur Herstellung von Cellulosecarbamat mittels reaktiver Extrusion und die Verwendung der Verfahrensprodukte zur Herstellung von Formkörpern
DE10223171A1 (de) * 2002-05-24 2003-12-11 Zimmer Ag Verfahren zur Herstellung von Cellulosecarbamat
JP7340195B2 (ja) * 2017-06-14 2023-09-07 国立大学法人京都大学 微細セルロース繊維、その製造方法、スラリー及び複合体
JP2019001876A (ja) * 2017-06-14 2019-01-10 国立大学法人京都大学 微細セルロース繊維、その製造方法、スラリー及び複合体
JP7088888B2 (ja) * 2019-08-29 2022-06-21 大王製紙株式会社 繊維状セルロース複合樹脂の製造方法
JP7213296B2 (ja) * 2021-03-31 2023-01-26 大王製紙株式会社 繊維状セルロース含有物、繊維状セルロース複合樹脂、及び繊維状セルロース含有物の製造方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2290888A (en) * 1932-01-30 1942-07-28 North American Rayon Corp Cellulose activated by liquid ammonia
FI62318C (fi) * 1981-01-27 1982-12-10 Neste Oy Foerfarande foer framstaellning av ett alkaliloesligt cellulosaderivat
US4600590A (en) * 1981-10-14 1986-07-15 Colorado State University Research Foundation Method for increasing the reactivity and digestibility of cellulose with ammonia
JPS62236802A (ja) * 1986-04-08 1987-10-16 Asahi Chem Ind Co Ltd アルカリ可溶性セルロ−スの製造方法
DE4242437C2 (de) * 1992-12-16 1998-08-13 Zimmer Ag Verfahren zur Herstellung von Cellulosecarbamat und Verwendung des erhaltenen Cellulosecarbamats zur Bildung einer Lösung für die Herstellung von Celluloseregenerat-Produkten
DE4329937C1 (de) * 1993-09-04 1994-11-24 Rhodia Ag Rhone Poulenc Verfahren zur Behandlung von Cellulose zu deren Aktivierung für nachfolgende chemische Reaktionen
HUP9802337A3 (en) * 1995-03-25 1999-03-29 Rhodia Ag Rhone Poulenc Process for activating polysaccharides, polysaccharides produced by this process, and use thereof

Also Published As

Publication number Publication date
AU3443497A (en) 1998-02-09
BR9710297A (pt) 1999-08-17
DE19628277A1 (de) 1998-01-15
WO1998002464A1 (fr) 1998-01-22
DE19628277C2 (de) 1998-07-09
EP0910585A1 (fr) 1999-04-28
CZ4199A3 (cs) 1999-05-12
PL331046A1 (en) 1999-06-21
JP2000505135A (ja) 2000-04-25
TR199900025T2 (xx) 1999-04-21

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Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued