[go: up one dir, main page]

EP0726973A1 - Procede de production d'un corps moule cellulosique - Google Patents

Procede de production d'un corps moule cellulosique

Info

Publication number
EP0726973A1
EP0726973A1 EP95922341A EP95922341A EP0726973A1 EP 0726973 A1 EP0726973 A1 EP 0726973A1 EP 95922341 A EP95922341 A EP 95922341A EP 95922341 A EP95922341 A EP 95922341A EP 0726973 A1 EP0726973 A1 EP 0726973A1
Authority
EP
European Patent Office
Prior art keywords
cellulose
suspension
solution
shredded
heating surface
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
EP95922341A
Other languages
German (de)
English (en)
Other versions
EP0726973B1 (fr
Inventor
Heinrich Firgo
Dieter Eichinger
Markus Eibl
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 EP0726973A1 publication Critical patent/EP0726973A1/fr
Application granted granted Critical
Publication of EP0726973B1 publication Critical patent/EP0726973B1/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 present invention relates to a method for producing a cellulosic molding.
  • N-methylmorpholine-N-oxide is used as the solvent.
  • NMMO N-methylmorpholine-N-oxide
  • the abbreviation "NMMO” is used for the term “tertiary amine oxides”, NMMO additionally representing the N-methylmorpholine-N-oxide which is preferably used today.
  • Tertiary amine oxides have long been known as alternative solvents for cellulose. From US Pat. No. 2,179,181 it is known, for example, that tertiary amine oxides are able to dissolve high-quality chemical pulp without derivatization and that from these solutions by precipitation Cellulosic shaped bodies such as fibers can be obtained. US Pat. Nos. 3,447,939, 3,447,956 and 3,508,941 describe further processes for the preparation of cellulosic solutions, cyclic amine oxides preferably being used as solvents. In all of these processes, cellulose is physically dissolved at an elevated temperature.
  • the pulp must be subjected to a preactivation in order to carry out the dissolving process sufficiently quickly (see "The Paper", volume 12, pages 784-788).
  • preactivation the formation and regeneration of alkali cellulose or a hydrothermal cellulose treatment are proposed.
  • the cellulose is preactivated before the solution preparation, which is also carried out in an extruder.
  • the DD-A mentioned is based on an NMMO-containing cellulose suspension which is first homogenized in a stirred vessel. The consistency is then increased to 12.5% by mass by centrifugation or pressing, dried to a water content of 10 to 15% by mass (based on NMMO) and converted into a clear solution in an extruder with a degassing zone at temperatures between 75 and 120 ° C. .
  • EP-A-0 356 419 by the applicant describes a process which is carried out in a so-called film truder in which a suspension of the comminuted, high-quality pulp in an aqueous tertiary amine oxide is transported in the form of a thin layer and is transported over a heating surface, the surface of this thin layer being subjected to a vacuum.
  • a suspension of the comminuted, high-quality pulp in an aqueous tertiary amine oxide is transported in the form of a thin layer and is transported over a heating surface, the surface of this thin layer being subjected to a vacuum.
  • water is evaporated off and the cellulose can be brought into solution, so that a spinnable cellulose solution is discharged from the film spinner.
  • All of the processes described above use high-quality chemical pulp as a starting material, which is obtained, for example, from beech wood or spruce wood. Little is known in the prior art about the use of alternative cellulose-containing materials.
  • NMMO Processing lignocellulosic materials in the NMMO process is known from WO 86/05526. Relatively aggressive conditions are recommended for processing. For example, poplar wood is first subjected to a special hydrolysis process and the solid product obtained is mixed at room temperature with NMMO, which has a water content of 13.5%.
  • the NMMO used is the monohydrate of the NMMO present at room temperature in the solid state (melting point> 70 ⁇ C). The solid mixture is homogenized and heated to 130 ° C. and melted, the hydrolyzed wood dissolving.
  • lignocellulosic material can be dissolved in a solution of NMMO in dimethyl sulfoxide.
  • the NMMO used is not an aqueous solution but has a water content of 15%, which also corresponds approximately to the monohydrate.
  • the object of the invention is to provide a process for the production of cellulosic moldings, in particular lyocell fibers, which uses alternative cellulose materials, ie no cellulose Softwoods and hardwoods, the solution preparation should be as gentle as possible. Melting of a solid mixture product should be avoided.
  • the process according to the invention for producing a cellulosic shaped body, in particular cellulose fibers is characterized by the combination of the measures that a cellulose-containing material is introduced into an aqueous solution of a tertiary amine oxide in order to suspend the cellulose-containing material, from the suspension with intensive mixing and using water is withdrawn from the elevated temperature and reduced pressure until a solution of cellulose is formed, and that the solution is shaped using a molding tool, in particular a spinneret, and introduced into a precipitation bath in order to precipitate the dissolved cellulose with which Provided that essentially shredded waste paper, shredded cellulosic fiber structures and / or shredded, mechanically and / or chemically digested annual plants are used as the cellulose-containing material.
  • Annual plants are understood to mean all cellulose-containing materials apart from coniferous and deciduous trees. Annual plants are known to be poorly or not at all suitable for the production of cellulose fibers in the viscose process.
  • the viscose process uses cellulose from deciduous and coniferous wood as the starting material.
  • the invention is based i.a. recognizing that the above-mentioned alternative pulps, which are only poorly suited for the viscose process, can be processed very well by the Lyocell process.
  • the aqueous solution used to prepare the suspension contains the tertiary amine oxide between 60 and 72% by mass.
  • An advantageous variant of the method according to the invention is that high-quality chemical pulp, which is usually used for the production of viscose, is additionally used as the cellulosic material. It has been shown that by adding high-quality pulp, for example beech wood pulp, high-quality fibers can be produced which are comparable to those which were produced exclusively from high-quality pulp.
  • the process according to the invention is best carried out using N-methylmorpholine-N-oxide.
  • a preferred embodiment of the method according to the invention consists in that the solution is formed by continuously introducing the suspension of the alternative pulp material into an evacuable, heatable vessel, mechanically spreading the introduced suspension to form two surfaces in a layer-like or film-like manner, which spreads out Suspension for the supply of heat is brought into contact with a heating surface over a surface, the spread suspension is transported over the heating surface with vigorous mixing, while the second surface facing away from this heating surface is subjected to a reduced pressure during transport over the heating surface in order to evaporate water, until the cellulose-containing material has dissolved and the solution is continuously withdrawn from the vessel.
  • a useful device in which this embodiment of the method according to the invention can be carried out is the film truder. It has been shown that a film truder is particularly well suited to dissolving alternative pulps. It it is believed that this is due to the high shear forces that occur in the film truder.
  • Used textiles which largely consisted of cotton fibers were mechanically crushed and suspended without further pretreatment in an aqueous solution of NMMO having a water content of 40 mass%, heated to 70 ⁇ C and in a laboratory kneader in a conventional manner at a temperature from 90 to 105 ⁇ C and processed under reduced pressure to a cellulose solution.
  • the content of waste textiles was chosen so that a cellulose concentration of 10% by mass was obtained after the excess water had been evaporated.
  • the cellulose solution was formable and could be spun into cellulose fibers.
  • the fiber data are given in the table below, comparing the data of fibers obtained when high quality chemical pulp is processed.
  • Example 1 was repeated, but instead of waste textiles, deinked waste paper was used and the suspension was processed into a solution in a film truder in accordance with the process described in EP-A-0 356 419. Some data of the fiber spun from the moldable cellulose solution are given in the table.
  • Example 3 (straw pulp)
  • Example 2 was repeated, but instead of old textiles, shredded straw pulp with only 75% ⁇ -cellulose was used.
  • the straw pulp was obtained by digesting straw in a conventional manner using the pre-hydrolysis sulfate process. Some data of the fiber spun from the moldable cellulose solution are given in the table.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Artificial Filaments (AREA)
  • Paper (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Nonwoven Fabrics (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

L'invention concerne un procédé de production d'un corps moulé cellulosique, notamment des fibres de cellulose, qui se caractérise en ce qu'il regroupe la combinaison des mesures suivantes: - un matériau contenant de la cellulose est introduit dans une solution aqueuse d'oxyde d'amine tertiaire, afin de tenir le matériau contenant de la cellulose en suspension, - de l'eau est extraite de la suspension, par un mélange intensif et par application d'une température élevée et d'une pression réduite, jusqu'à obtention d'une solution de cellulose, et - la solution est moulée à l'aide d'un outil de moulage, notamment une filière, et est introduite dans un bain de précipitation, afin de précipiter la cellulose dissoute, sous réserve que le matériau contenant de la cellulose utilisé soit principalement du papier de récupération déchiqueté, des textiles de récupération contenant de la cellulose déchiquetés et/ou des plantes annuelles broyées, désagrégées mécaniquement et/ou chimiquement.
EP95922341A 1994-09-05 1995-06-26 Procede de production d'un corps moule cellulosique Expired - Lifetime EP0726973B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT1698/94 1994-09-05
AT0169894A AT401392B (de) 1994-09-05 1994-09-05 Verfahren zur herstellung eines cellulosischen formkörpers
PCT/AT1995/000134 WO1996007778A1 (fr) 1994-09-05 1995-06-26 Procede de production d'un corps moule cellulosique

Publications (2)

Publication Number Publication Date
EP0726973A1 true EP0726973A1 (fr) 1996-08-21
EP0726973B1 EP0726973B1 (fr) 1998-09-16

Family

ID=3519060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95922341A Expired - Lifetime EP0726973B1 (fr) 1994-09-05 1995-06-26 Procede de production d'un corps moule cellulosique

Country Status (14)

Country Link
US (1) US5601767A (fr)
EP (1) EP0726973B1 (fr)
JP (1) JPH09505119A (fr)
CN (1) CN1040673C (fr)
AT (2) AT401392B (fr)
AU (1) AU704880B2 (fr)
BR (1) BR9506352A (fr)
CA (1) CA2175563A1 (fr)
DE (2) DE19580976D2 (fr)
FI (1) FI114221B (fr)
GB (1) GB2297056B (fr)
MX (1) MX9601671A (fr)
NO (1) NO308908B1 (fr)
WO (1) WO1996007778A1 (fr)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5603884A (en) * 1994-11-18 1997-02-18 Viskase Corporation Reinforced cellulosic film
AT408547B (de) * 1995-09-26 2001-12-27 Chemiefaser Lenzing Ag Verfahren zum transportieren einer lösung von cellulose in einem wässrigen tertiären aminoxid
AT402741B (de) * 1995-10-13 1997-08-25 Chemiefaser Lenzing Ag Verfahren zur herstellung cellulosischer fasern
US6210801B1 (en) 1996-08-23 2001-04-03 Weyerhaeuser Company Lyocell fibers, and compositions for making same
US6306334B1 (en) 1996-08-23 2001-10-23 The Weyerhaeuser Company Process for melt blowing continuous lyocell fibers
US6331354B1 (en) 1996-08-23 2001-12-18 Weyerhaeuser Company Alkaline pulp having low average degree of polymerization values and method of producing the same
US6471727B2 (en) 1996-08-23 2002-10-29 Weyerhaeuser Company Lyocell fibers, and compositions for making the same
CN1061106C (zh) * 1997-12-09 2001-01-24 宜宾丝丽雅集团有限公司 溶剂法纤维素纤维制造方法
WO2001086042A1 (fr) * 2000-05-10 2001-11-15 Toyo Boseki Kabushiki Kaisya Procede de preparation d'un produit façonne en cellulose
AT410319B (de) * 2001-07-25 2003-03-25 Chemiefaser Lenzing Ag Celluloseschwamm und verfahren zu dessen herstellung
US8597518B2 (en) * 2009-08-19 2013-12-03 The University Of Connecticut Pervaporation composite membrane for aqueous solution separation and methods for using the same
AT512601B1 (de) * 2012-03-05 2014-06-15 Chemiefaser Lenzing Ag Verfahren zur Herstellung einer Cellulosesuspension
JP5308554B2 (ja) * 2012-04-23 2013-10-09 オーミケンシ株式会社 非木材再生セルロース繊維及び該繊維含有繊維製品
US12281441B2 (en) 2013-04-17 2025-04-22 Evrnu, Spc Methods and systems for forming composite fibers
US11034817B2 (en) 2013-04-17 2021-06-15 Evrnu, Spc Methods and systems for processing mixed textile feedstock, isolating constituent molecules, and regenerating cellulosic and polyester fibers
AT515174B1 (de) 2013-10-15 2019-05-15 Chemiefaser Lenzing Ag Cellulosesuspension, Verfahren zu ihrer Herstellung und Verwendung
AT515180B1 (de) 2013-10-15 2016-06-15 Chemiefaser Lenzing Ag Dreidimensionaler cellulosischer Formkörper, Verfahren zu seiner Herstellung und seine Verwendung
AT515152B1 (de) * 2013-11-26 2015-12-15 Chemiefaser Lenzing Ag Verfahren zum Vorbehandeln von rückgewonnenen Baumwollfasern zur Verwendung bei der Herstellung von Formkörpern aus regenerierter Cellulose
AT517020B1 (de) 2015-02-06 2020-02-15 Chemiefaser Lenzing Ag Recycling von cellulosischen Kunstfasern
FI3551790T3 (sv) * 2016-12-06 2023-07-05 Re Newcell Ab Cellulosafibrer
WO2018142025A1 (fr) 2017-02-01 2018-08-09 Aalto University Foundation Sr Procédé de conversion de déchets dérivés de pâte mécanique en produits de cellulose à valeur ajoutée
CN107326530A (zh) * 2017-06-15 2017-11-07 东华大学 一种增材制造棉纤维面料的制备方法
EP3511447A1 (fr) * 2018-01-15 2019-07-17 Lenzing Aktiengesellschaft Fonctionnalisation de corps étrangers dans le procédé lyocell
FI3868929T3 (fi) 2018-01-15 2025-07-29 Chemiefaser Lenzing Ag Muotoiltu tuote, joka sisältää elastaania ja selluloosaa, ja vamistusmenetelmä
EP3511874A1 (fr) 2018-01-15 2019-07-17 Lenzing Aktiengesellschaft Codage d'un produit cellulosique
ES2911218T3 (es) * 2018-01-15 2022-05-18 Chemiefaser Lenzing Ag Reutilización de la fibra de celulosa Lyocell para el procedimiento Lyocell
EP3511448A1 (fr) 2018-01-15 2019-07-17 Lenzing Aktiengesellschaft Procédé de recyclage du matériau textile comprenant de la cellulose
EP3511451A1 (fr) 2018-01-15 2019-07-17 Lenzing Aktiengesellschaft Procédé de recyclage d'un produit textile mélangé comportant de la cellulose et de la matière plastique synthétique
FR3095819B1 (fr) * 2019-05-10 2021-06-18 Inst De Rech Tech Jules Verne Procédé de fabrication d’une fibre de carbone à partir d’un produit en papier
EP3748072A1 (fr) * 2019-06-04 2020-12-09 Lenzing Aktiengesellschaft Procédé de fabrication continue d'une matière de départ traitée contenant de la cellulose
US20250198083A1 (en) 2022-03-21 2025-06-19 Phoenxt Pty. Ltd Regenerating cellulose from waste textile
CN115637602A (zh) * 2022-10-28 2023-01-24 武汉纺织大学 一种采用有机溶剂提取稻草秸秆中纤维素的方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE226573C (fr) *
US2179181A (en) * 1936-04-21 1939-11-07 Soc Of Chemical Ind Cellulose solutions and process of making same
US3447956A (en) * 1966-09-02 1969-06-03 Eastman Kodak Co Process for strengthening swellable fibrous material with an amine oxide and the resulting material
US3447939A (en) * 1966-09-02 1969-06-03 Eastman Kodak Co Compounds dissolved in cyclic amine oxides
US4416698A (en) * 1977-07-26 1983-11-22 Akzona Incorporated Shaped cellulose article prepared from a solution containing cellulose dissolved in a tertiary amine N-oxide solvent and a process for making the article
FR2578865B1 (fr) * 1985-03-14 1987-04-10 Centre Nat Rech Scient Procede pour la preparation de solutions d'un materiau ligno-cellulosique et solutions obtenues.
AT392972B (de) * 1988-08-16 1991-07-25 Chemiefaser Lenzing Ag Verfahren zur herstellung von loesungen von cellulose sowie einrichtung zur durchfuehrung des verfahrens
US5094690A (en) * 1988-08-16 1992-03-10 Lenzing Aktiengesellschaft Process and arrangement for preparing a solution of cellulose

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9607778A1 *

Also Published As

Publication number Publication date
AU2706795A (en) 1996-03-27
NO961795D0 (no) 1996-05-03
ATA169894A (de) 1996-01-15
DE19580976D2 (de) 1996-09-26
CN1040673C (zh) 1998-11-11
DE59503610D1 (de) 1998-10-22
GB9607855D0 (en) 1996-06-19
CA2175563A1 (fr) 1996-03-14
MX9601671A (es) 1997-03-29
AT401392B (de) 1996-08-26
FI114221B (fi) 2004-09-15
BR9506352A (pt) 1997-09-02
CN1134732A (zh) 1996-10-30
JPH09505119A (ja) 1997-05-20
EP0726973B1 (fr) 1998-09-16
NO308908B1 (no) 2000-11-13
ATE171226T1 (de) 1998-10-15
GB2297056A (en) 1996-07-24
FI961902A0 (fi) 1996-05-03
HK1010402A1 (en) 1999-06-17
WO1996007778A1 (fr) 1996-03-14
FI961902L (fi) 1996-05-03
GB2297056B (en) 1998-04-08
NO961795L (no) 1996-05-03
AU704880B2 (en) 1999-05-06
US5601767A (en) 1997-02-11

Similar Documents

Publication Publication Date Title
AT401392B (de) Verfahren zur herstellung eines cellulosischen formkörpers
AT403296B (de) Verfahren zur herstellung eines celluloseformkörpers
DE60122169T2 (de) Alkalischer zellstoff mit einem niedrigen durchschnittspolymerisationsgrad und verfahren zu seiner herstellung
EP0178292B1 (fr) Procédé pour la préparation de carbamates de cellulose
AT514123B1 (de) Polysaccharidfilm und Verfahren zu seiner Herstellung
DE2830685A1 (de) Verfahren zur herstellung einer loesung von zellulose in einem aminoxyd
DE60303900T2 (de) Verwendung von Holz mit niedrigem spezifischem Gewicht zur Herstellung von Lyozellprodukte
EP2524980A1 (fr) Procédé de fabrication de fibres de précurseur contenant de la lignine et de fibres de carbone
DE3027033A1 (de) Verfahren zum aufloesen von zellulose
EP0490870A2 (fr) Procédé pour la fabrication d'objets cellulosiques
DE60302540T2 (de) Verwendung von Holz mit niedrigem spezifischem Gewicht zur Herstellung von Lyozellprodukten
DE60123377T2 (de) Verfahren zur herstellung von fasern, filmen und anderen produkten aus modifizierter löslicher zellulose
DE60318810T2 (de) Verwendung von Holz mit niedrigem spezifischem Gewicht für Lyozellprodukte
EP0683827B1 (fr) Procede de fabrication de corps moules en cellulose
EP2116638B1 (fr) Procédé de fabrication d'un film soufflé de carbamate de cellulose
AT402739B (de) Verfahren zur herstellung eines cellulosischen formkörpers
DE4439149C2 (de) Verfahren zur Herstellung einer homogenen Celluloselösung
EP2110468B1 (fr) Solution de filage de carbamate de cellulose, fibre de carbamate de cellulose, son procédé de fabrication et son utilisation
EP4291708B1 (fr) Procédé pour une décomposition mécanique chimiquement assistée de copeaux de bois ou de copeaux de bois
DE4440246C2 (de) Verfahren zur Herstellung eines biologisch abbaubaren cellulosischen Faserverbundwerkstoffs
AT413820B (de) Verfahren zur herstellung von cellulosischen formkörpern
DE4446491C2 (de) Verfahren zur Herstellung von Cellulosefasern sowie Cellulosefasern mit reduzierter Fibrillierneigung
EP0901533B1 (fr) Procede de fabrication d'une nappe de fibres renforcee
EP3536833A1 (fr) Fibres de lyocell sans mannane
HK1010402B (en) Process for producing a cellulose moulding

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19960424

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: LT PAYMENT 960424;LV PAYMENT 960424;SI PAYMENT 960424

RAX Requested extension states of the european patent have changed

Free format text: LT PAYMENT 960424;LV PAYMENT 960424;SI PAYMENT 960424

17Q First examination report despatched

Effective date: 19970225

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: LT PAYMENT 960424;LV PAYMENT 960424;SI PAYMENT 960424

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980916

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19980916

REF Corresponds to:

Ref document number: 171226

Country of ref document: AT

Date of ref document: 19981015

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19980917

REF Corresponds to:

Ref document number: 59503610

Country of ref document: DE

Date of ref document: 19981022

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19981216

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 19981106

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19990430

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990504

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990626

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990630

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991231

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000626

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20040520

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20040528

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20040530

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20040603

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20040604

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20040609

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20040709

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050626

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050626

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050627

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051226

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060103

EUG Se: european patent has lapsed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060228

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20050626

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20060101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20060228

BERE Be: lapsed

Owner name: *LENZING A.G.

Effective date: 20050630