EP0726974A1 - Procede de fabrication d'objets moules en cellulose - Google Patents

Procede de fabrication d'objets moules en cellulose

Info

Publication number
EP0726974A1
EP0726974A1 EP95928881A EP95928881A EP0726974A1 EP 0726974 A1 EP0726974 A1 EP 0726974A1 EP 95928881 A EP95928881 A EP 95928881A EP 95928881 A EP95928881 A EP 95928881A EP 0726974 A1 EP0726974 A1 EP 0726974A1
Authority
EP
European Patent Office
Prior art keywords
amine oxide
tertiary amine
cellulose
fibers
aqueous 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.)
Granted
Application number
EP95928881A
Other languages
German (de)
English (en)
Other versions
EP0726974B1 (fr
Inventor
Hartmut Rüf
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.)
Lenzing AG
Original Assignee
Lenzing AG
Chemiefaser Lenzing AG
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 Lenzing AG, Chemiefaser Lenzing AG filed Critical Lenzing AG
Publication of EP0726974A1 publication Critical patent/EP0726974A1/fr
Application granted granted Critical
Publication of EP0726974B1 publication Critical patent/EP0726974B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof

Definitions

  • the invention relates to a process for the production of cellulosic shaped articles, e.g. Fibers according to the preamble of claim 1.
  • NMMO N-methyl-moipholin-N-oxide
  • EP-A 553 070 Processes for producing cellulosic shaped articles from a solution of cellulose in a mixture of NMMO and water are e.g. in U.S. Patent 4,246,221. The fibers produced in this way are distinguished by a high fiber strength in the conditioned and in the wet state, a high wet modulus and a high loop strength.
  • a special property of these fibers is their high tendency to fibrillation, especially under stress when wet, e.g. during a washing process. While this property is desirable for certain applications of the fibers and gives interesting effects, the usability for other purposes, e.g. Textiles that are said to be wash-resistant are reduced.
  • REPLACEMENT BLA ⁇ (RULE 26) According to EP-A-538 977, the fibers, which can be freshly spun or have already been dried, are treated with an aqueous system which contains a chemical reagent with 2 to 6 functional groups which can react with cellulose.
  • cellulosic fibers are spun from a solution in a tertiary amine oxide into an aqueous coagulation bath.
  • SU-1 224362 A describes a process for the production of cellulose fibers with a spinning bath, which is characterized in that it has the aim of increasing the elongation at break, reducing the shrinkage at elevated temperatures and maintaining the elongation in the wet state contains, inter alia, isopropanol or isobutanol or mixtures of the two with 5-40% NMMO and 0.8-10% water.
  • isoamyl alcohol is also given in an example.
  • REPLACEMENT BLA ⁇ (RULE 26) Kuuchikhin VG, Khim. Volokna (1989) No. 4, p. 33 and Romanov VV and Sokira AN, Khim. Volokna (1988) No. 1, p. 27 describe the use of isopropanol and isobutanol in the spinning bath.
  • the fibrillation behavior of the spun fibers improves significantly if substances are used in the spinning bath which have a higher molecular weight than the amine oxide used.
  • the spinning bath essentially consists of these substances, i.e. that small amounts of additives may also be present in the spinning bath. It is also possible to add small amounts of up to 10% of tertiary amine oxide or water to the spin bath without restricting the effect according to the invention of using non-aqueous solvents for the amine oxide.
  • glycols, glycol ethers, polyglycols and polyglycol ethers are outstandingly suitable as substances used for the process according to the invention.
  • the process according to the invention can be used in a particularly advantageous manner if the tertiary amine oxide used is N-methylmorpholine-N-oxide.
  • REPLACEMENT BLA ⁇ (RULE 26) All known compositions are suitable as spinning solutions for the process according to the invention.
  • the pulp concentration in the dope can vary between 5 and 25. However, cellulose contents between 10 and 18% are preferred.
  • the device consists of a heated, temperature-controlled cylinder into which the spinning mass is filled. By means of a piston, the propulsion of which is controlled by a motor, the spinning mass is extruded through the spinneret attached to the underside of the cylinder.
  • a dry-wet spinning process that is to say the filament is immersed in a spinning bath (20 cm bath length in water) after the air gap given in the examples and is drawn off using a godet .
  • the friction of the fibers against one another during washing processes or during finishing processes in the wet state was simulated by the following text: 8 fibers were placed in a 20 ml sample vial with 4 ml water and in a laboratory shaker type RO-1 from Gerhardt for 9 hours, Bonn (FRG) shaken at level 12. The fibrillation behavior of the fibers was then assessed under the microscope by counting the number of fibrils per 0.276 mm fiber length and is given in a splice rating from 0 (no fibrils) to 6 (strong fibrillation).
  • the output has no significant influence on the fibrillation behavior of the fibers.
  • this makes it possible to produce low-fibrillation fibers even at higher ejection rates (e.g. 0.1 g / hole / min), which enables a more economical process.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

Selon un procédé de fabrication de corps moulés en cellulose, on dissout la cellulose dans un mélange d'un oxyde d'amine tertiaire et d'un milieu dans lequel la cellulose ne se dissout pas, par exemple de l'eau. On extrude la solution à travers un outil de façonnage et les filaments ainsi obtenus sont amenés tout en étant étirés à travers une fente jusqu'à un bain de régénération. Le procédé se caractérise en ce que le bain de régénération est sensiblement constitué d'un solvant non aqueux de l'oxyde d'amine tertiaire ayant un poids moléculaire supérieur à celui de l'oxyde d'amine tertiaire. On peut ainsi obtenir des fibres filées dans un solvant ayant une faible tendance à la fibrillation. On utilise de préférence des polyéthylène-glycols.
EP95928881A 1994-09-05 1995-09-04 Procede de fabrication d'objets moules en cellulose Expired - Lifetime EP0726974B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT1695/94 1994-09-05
AT0169594A AT401063B (de) 1994-09-05 1994-09-05 Verfahren zur herstellung von cellulosischen formkörpern
PCT/AT1995/000174 WO1996007779A1 (fr) 1994-09-05 1995-09-04 Procede de fabrication d'objets moules en cellulose

Publications (2)

Publication Number Publication Date
EP0726974A1 true EP0726974A1 (fr) 1996-08-21
EP0726974B1 EP0726974B1 (fr) 1998-06-17

Family

ID=3518999

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95928881A Expired - Lifetime EP0726974B1 (fr) 1994-09-05 1995-09-04 Procede de fabrication d'objets moules en cellulose

Country Status (12)

Country Link
US (1) US5827463A (fr)
EP (1) EP0726974B1 (fr)
JP (1) JPH09505120A (fr)
CN (1) CN1135242A (fr)
AT (2) AT401063B (fr)
AU (1) AU693589B2 (fr)
BR (1) BR9506355A (fr)
CA (1) CA2175462A1 (fr)
DE (1) DE59502591D1 (fr)
FI (1) FI961903A (fr)
NO (1) NO961782D0 (fr)
WO (1) WO1996007779A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4446491C2 (de) * 1994-12-23 2000-06-15 Fraunhofer Ges Forschung Verfahren zur Herstellung von Cellulosefasern sowie Cellulosefasern mit reduzierter Fibrillierneigung
AT404032B (de) * 1996-03-04 1998-07-27 Chemiefaser Lenzing Ag Verfahren zur herstellung cellulosischer fasern
SE509894C2 (sv) * 1996-08-27 1999-03-15 Akzo Nobel Surface Chem Användning av en linjär syntetisk polymer för att förbättra egenskaperna hos en formkropp av cellulosa framställd genom en tertiär aminoxidprocess
EP0853146A3 (fr) * 1997-01-09 1999-03-24 Akzo Nobel N.V. Procédé de production de fibres cellulosiques et fibres cellulosiques
DE10019660B4 (de) * 2000-04-20 2004-04-29 Zimmer Ag Verfahren zum Verspinnen einer Spinnlösung und Spinnkopf
AT410319B (de) * 2001-07-25 2003-03-25 Chemiefaser Lenzing Ag Celluloseschwamm und verfahren zu dessen herstellung
DE10137171A1 (de) * 2001-07-31 2003-02-13 Stockhausen Chem Fab Gmbh Verfahren zur Herstellung von cellulosischen Formkörpern mit superabsorbierenden Eigenschaften
AT502743B1 (de) * 2005-08-26 2008-06-15 Chemiefaser Lenzing Ag Cellulosischer formkörper, verfahren zu seiner herstellung und dessen verwendung
DE102006022009B3 (de) * 2006-05-10 2007-12-06 Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. Verfahren zur Herstellung cellulosischer Mehrkomponentenfasern
TWI667378B (zh) 2014-01-03 2019-08-01 奧地利商蘭精股份有限公司 纖維素纖維

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT134893B (de) * 1931-11-07 1933-10-10 Warszawska Spolka Akcyjna Budo Kurbelloser Motorkompressor mit zwei gegenläufigen Freiflugkolben.
US4246221A (en) * 1979-03-02 1981-01-20 Akzona Incorporated Process for shaped cellulose article prepared from a solution containing cellulose dissolved in a tertiary amine N-oxide solvent
IT1194603B (it) * 1979-12-21 1988-09-22 Snia Viscosa Procedimento per la preparazione di corpi formati di cellulosa rigenerata da soluzioni di derivati della cellulosa in solventi organici
DD218121A1 (de) * 1983-10-17 1985-01-30 Chemiefaser Komb Schwarza Wilh Verfahren zur herstellung von formkoerpern aus celluloseloesungen
SU1224362A1 (ru) * 1984-06-29 1986-04-15 Предприятие П/Я А-3844 Способ получени целлюлозных волокон
GB9022175D0 (en) * 1990-10-12 1990-11-28 Courtaulds Plc Treatment of fibres
GB9122318D0 (en) * 1991-10-21 1991-12-04 Courtaulds Plc Treatment of elongate members
AT396930B (de) * 1992-01-23 1993-12-27 Chemiefaser Lenzing Ag Aminoxide
GB9222059D0 (en) * 1992-10-21 1992-12-02 Courtaulds Plc Fibre treatment
GB9304887D0 (en) * 1993-03-10 1993-04-28 Courtaulds Plc Fibre treatment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9607779A1 *

Also Published As

Publication number Publication date
AT401063B (de) 1996-06-25
JPH09505120A (ja) 1997-05-20
WO1996007779A1 (fr) 1996-03-14
FI961903A0 (fi) 1996-05-03
NO961782L (no) 1996-05-02
AU693589B2 (en) 1998-07-02
US5827463A (en) 1998-10-27
NO961782D0 (no) 1996-05-02
AU3246295A (en) 1996-03-27
ATA169594A (de) 1995-10-15
EP0726974B1 (fr) 1998-06-17
BR9506355A (pt) 1997-09-16
ATE167533T1 (de) 1998-07-15
FI961903A (fi) 1996-05-03
CA2175462A1 (fr) 1996-03-14
CN1135242A (zh) 1996-11-06
DE59502591D1 (de) 1998-07-23

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