EP1129241B1 - Verfahren zur herstellung cellulosischer fasern - Google Patents
Verfahren zur herstellung cellulosischer fasern Download PDFInfo
- Publication number
- EP1129241B1 EP1129241B1 EP99947074A EP99947074A EP1129241B1 EP 1129241 B1 EP1129241 B1 EP 1129241B1 EP 99947074 A EP99947074 A EP 99947074A EP 99947074 A EP99947074 A EP 99947074A EP 1129241 B1 EP1129241 B1 EP 1129241B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wash
- baths
- bath
- fibers
- washing
- 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 - Lifetime
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/06—Washing or drying
-
- 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 method for producing cellulosic fibers from solutions of Cellulose in an aqueous tertiary amine oxide.
- a mixture, in particular, as the organic solvent from a tertiary amine oxide and water excellent for the production of Lyocell fibers or other moldings is excellent for the production of Lyocell fibers or other moldings.
- the amine oxide used is predominantly N-methylmorpholine-N-oxide (NMMO) used.
- NMMO N-methylmorpholine-N-oxide
- Other suitable amine oxides are in the EP-A 0 553 070.
- Process for the production of cellulosic moldings from a Solutions of the cellulose in a mixture of NMMO and water are e.g. in the US PS 4,246,221 or disclosed in PCT-WO 93/19230. The cellulose solution is made extruded into a spinneret, stretched in an air gap and out of solution in one aqueous precipitation bath precipitated.
- amine oxide process This process is hereinafter referred to as the "amine oxide process” or “Lyocellclar”, with the abbreviation "NMMO” in the following all tertiary amine oxides are meant that can dissolve cellulose.
- NMMO tertiary amine oxides are meant that can dissolve cellulose.
- PCT-WO 92/14871 describes a method for washing after Fibers produced by amine oxide processes.
- the fibers are cut into staple fibers only in a later process stage.
- PCT-WO 92/14871 points out that it can be derived from the Viscose process for the production of cellulosic fibers is known to be one of the washing stages is designed as a bleaching stage in which an alkaline pH prevails. However, it is known in the amine oxide process that all washing liquids for the recovery of NMMO are recycled. It is also in this context from the PCT-WO 92/14871 known that the washing baths are connected to each other and fresh washing liquid added in the last washing bath and countercurrent to Direction of transport of the fiber cable is guided to the first wash bath. Because the entry Additional chemicals in larger quantities in this circuit is undesirable Amine oxide process does not implement a bleaching stage in the washing liquid circuit become. It is only possible to use a bleach bath independently of each other To provide related wash baths. So if in the following of "Wash baths" is meant, such an independent bleach bath is not meant.
- Another problem with washing the fibers made by the amine oxide process is that adhering NMMO must be completely removed from the fiber.
- the object of the present invention is to provide a method, in which the NMMO is washed out of the fiber with as little effort as possible can be.
- This task is accomplished by a process for producing cellulosic fibers from solutions the cellulose dissolved in an aqueous tertiary amine oxide, the extruded fibers passed over a precipitation bath and cut and the cut fibers in the form of a Fleece passed over several wash baths and then dried, which Wash baths communicate with each other and being fresh wash liquid in the last Wash bath is given up and countercurrent to the direction of transport of the nonwoven is led to the first washing bath, and which method is characterized in that the pH of each of the wash baths is maintained above 8.5. For the purposes of In the present invention, a pH of more than 8.5 is referred to as "alkaline pH" designated.
- the invention relates to so-called "washing sections" of several together related washes. According to the pH of the Wash liquid of each of the related wash baths higher than 8.5 being held. Baths that are not connected to the washing baths and therefore not can be fed with the same washing liquid, e.g. separate treatment or Bleach baths are not included in the present invention.
- the adjustment of the pH in the wash baths can be done by the Basic buffering substances are added.
- the addition of Sodium hydroxide solution preferred.
- the necessary amount of caustic soda, which of Process parameters such as depends on the pH value of the fleece or the moisture in the fleece, can easily be determined for the person skilled in the art on the basis of the respective circumstances. In the amount added is regulated in a simple manner on the basis of the pH of the wash baths.
- the sodium hydroxide solution can only be in one of the wash baths or in several places be added to the laundry. It turns out that the addition of alkali to the wash baths no negative influence on the subsequent process steps such as cleaning the Has wash baths and solvent recovery.
- the temperature of the wash water is preferably about 20 ° C to 90 ° C.
- wash the fleece this can be done through the washing baths filled with washing liquid be performed.
- the wash baths can also be designed such that Washing liquid is sprayed onto the fleece.
- the total liquor ratio of the washing liquid to the nonwoven fabric is advantageously 1.5: 1 to 40: 1.
- 1 schematically denotes a method for washing a nonwoven fabric freshly spun cut lyocell fibers.
- the nonwoven (10) is e.g. on a sieve belt (not shown) through the different washing baths (there are 5 washing baths in FIG. 1).
- the washing liquid flows down back into the respective container.
- Fresh wash water 13 becomes the last bath (Container 5) fed.
- the wash water circulates in the respective baths, taking the rate the circulation within a bath may be higher than the rate of supply of the fresh one Wash water in the last wash bath. Excess wash water becomes countercurrent
- the direction of transport of the nonwoven fabric is fed to the upstream wash bath.
- nonwoven fabric is rolled using pairs of rollers, e.g. the pair of rollers (11, 12) pressed.
- the washed nonwoven becomes further post-treatment stages supplied or dried.
- the wash water of the first becomes the precipitation bath and the cleaning and recovery of NMMO fed.
- a nonwoven fabric was made from freshly spun Lyocell fibers in five wash baths using slightly alkaline water as Washing liquid without additional measures according to the general given above Procedure washed.
- the fleece was pressed to a water content of approximately 200%. After the last wash bath, the fleece was brought to a water content of approx. 100% squeezed and then dried.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Artificial Filaments (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Paper (AREA)
- Nonwoven Fabrics (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT99947074T ATE258238T1 (de) | 1998-09-29 | 1999-09-28 | Verfahren zur herstellung cellulosischer fasern |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0161498A AT406588B (de) | 1998-09-29 | 1998-09-29 | Verfahren zur herstellung cellulosischer fasern |
AT161498 | 1998-09-29 | ||
PCT/AT1999/000229 WO2000018991A1 (de) | 1998-09-29 | 1999-09-28 | Verfahren zur herstellung cellulosischer fasern |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1129241A1 EP1129241A1 (de) | 2001-09-05 |
EP1129241B1 true EP1129241B1 (de) | 2004-01-21 |
Family
ID=3517237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99947074A Expired - Lifetime EP1129241B1 (de) | 1998-09-29 | 1999-09-28 | Verfahren zur herstellung cellulosischer fasern |
Country Status (11)
Country | Link |
---|---|
US (1) | US6645409B2 (zh) |
EP (1) | EP1129241B1 (zh) |
KR (1) | KR20010075371A (zh) |
CN (1) | CN1143011C (zh) |
AT (1) | AT406588B (zh) |
AU (1) | AU6066899A (zh) |
BR (1) | BR9914108A (zh) |
DE (1) | DE59908380D1 (zh) |
ID (1) | ID28499A (zh) |
TW (1) | TW577941B (zh) |
WO (1) | WO2000018991A1 (zh) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT410319B (de) * | 2001-07-25 | 2003-03-25 | Chemiefaser Lenzing Ag | Celluloseschwamm und verfahren zu dessen herstellung |
WO2004015563A1 (en) * | 2002-08-09 | 2004-02-19 | Intel Corporation | Multimedia coprocessor control mechanism including alignment or broadcast instructions |
DE102004007617B4 (de) * | 2004-02-17 | 2007-02-08 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Herstellung eines Vliesstoffes, Vliesstoff und dessen Verwendung |
US7693817B2 (en) * | 2005-06-29 | 2010-04-06 | Microsoft Corporation | Sensing, storing, indexing, and retrieving data leveraging measures of user activity, attention, and interest |
KR100769973B1 (ko) * | 2006-12-28 | 2007-10-25 | 주식회사 효성 | 수세 공정 특성을 가진 산업용 셀룰로오스 멀티필라멘트의제조 방법 수세 공정 |
AT504649B1 (de) * | 2007-07-11 | 2008-07-15 | Chemiefaser Lenzing Ag | Vorrichtung und verfahren zur behandlung einer fasermasse |
AT505904B1 (de) * | 2007-09-21 | 2009-05-15 | Chemiefaser Lenzing Ag | Cellulosesuspension und verfahren zu deren herstellung |
AT507051B1 (de) | 2008-06-27 | 2015-05-15 | Chemiefaser Lenzing Ag | Cellulosefaser und verfahren zu ihrer herstellung |
AT519489B1 (de) * | 2016-10-21 | 2021-11-15 | Chemiefaser Lenzing Ag | Verfahren und Vorrichtung zum Herstellen von Vliesen auf Cellulosebasis, die direkt aus Lyocell-Spinnlösung gebildet werden |
KR101972271B1 (ko) * | 2018-09-05 | 2019-04-24 | 박한수 | 인조 모발용 원사를 제조하는 방법 및 장치 |
EP3828320A1 (de) * | 2019-11-26 | 2021-06-02 | Lenzing Aktiengesellschaft | Gegenstromwäsche |
CN112593305A (zh) * | 2020-12-04 | 2021-04-02 | 四川辉腾科技股份有限公司 | 一种芳纶ⅲ纤维纺丝水洗装置及其使用方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE3536537A1 (de) * | 1985-10-12 | 1987-04-16 | Wolff Walsrode Ag | Verfahren zur reinigung von produkten aus regenerierter cellulose |
GB9103297D0 (en) | 1991-02-15 | 1991-04-03 | Courtaulds Plc | Fibre production method |
AT396930B (de) | 1992-01-23 | 1993-12-27 | Chemiefaser Lenzing Ag | Aminoxide |
ATA53792A (de) | 1992-03-17 | 1995-02-15 | Chemiefaser Lenzing Ag | Verfahren zur herstellung cellulosischer formkörper, vorrichtung zur durchführung des verfahrens sowie verwendung einer spinnvorrichtung |
US5585052A (en) * | 1994-08-10 | 1996-12-17 | The Dow Chemical Company | Process for the preparation of polybenzazole staple fiber |
AT402741B (de) | 1995-10-13 | 1997-08-25 | Chemiefaser Lenzing Ag | Verfahren zur herstellung cellulosischer fasern |
DE19600572B4 (de) | 1996-01-09 | 2005-03-10 | Fraunhofer Ges Forschung | Verfahren zur Herstellung von Cellulosefasern und die mit diesem Verfahren hergestellten Fasern |
GB9611252D0 (en) * | 1996-05-30 | 1996-07-31 | Courtaulds Fibres Holdings Ltd | Fibre manufacture |
GB9614679D0 (en) * | 1996-07-12 | 1996-09-04 | Courtaulds Fibres Holdings Ltd | Manufacture of fibre |
GB9615431D0 (en) * | 1996-07-23 | 1996-09-04 | Courtaulds Fibres Holdings Ltd | Fibre manufacture |
-
1998
- 1998-09-29 AT AT0161498A patent/AT406588B/de not_active IP Right Cessation
-
1999
- 1999-09-28 WO PCT/AT1999/000229 patent/WO2000018991A1/de active IP Right Grant
- 1999-09-28 BR BR9914108-6A patent/BR9914108A/pt not_active Application Discontinuation
- 1999-09-28 KR KR1020017003839A patent/KR20010075371A/ko active IP Right Grant
- 1999-09-28 ID IDW20010718A patent/ID28499A/id unknown
- 1999-09-28 AU AU60668/99A patent/AU6066899A/en not_active Abandoned
- 1999-09-28 CN CNB998114847A patent/CN1143011C/zh not_active Expired - Lifetime
- 1999-09-28 DE DE59908380T patent/DE59908380D1/de not_active Expired - Fee Related
- 1999-09-28 EP EP99947074A patent/EP1129241B1/de not_active Expired - Lifetime
- 1999-10-01 TW TW088116969A patent/TW577941B/zh not_active IP Right Cessation
-
2001
- 2001-03-21 US US09/814,152 patent/US6645409B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
BR9914108A (pt) | 2001-06-12 |
US6645409B2 (en) | 2003-11-11 |
TW577941B (en) | 2004-03-01 |
AU6066899A (en) | 2000-04-17 |
ID28499A (id) | 2001-05-31 |
ATA161498A (de) | 1999-11-15 |
KR20010075371A (ko) | 2001-08-09 |
WO2000018991A1 (de) | 2000-04-06 |
AT406588B (de) | 2000-06-26 |
CN1143011C (zh) | 2004-03-24 |
EP1129241A1 (de) | 2001-09-05 |
DE59908380D1 (de) | 2004-02-26 |
US20020008331A1 (en) | 2002-01-24 |
CN1320176A (zh) | 2001-10-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0178292B1 (de) | Verfahren zur Herstellung von Cellulosecarbamaten | |
EP1753908B1 (de) | Verfahren zur herstellung eines chemiezellstoffes | |
EP1129241B1 (de) | Verfahren zur herstellung cellulosischer fasern | |
DE1108849B (de) | Verfahren zur Herstellung von Gebilden aus regenerierter Cellulose | |
AT521561A2 (de) | Verfahren zur Herstellung von Zellulosefasern | |
AT402741B (de) | Verfahren zur herstellung cellulosischer fasern | |
AT400850B (de) | Verfahren zur herstellung von regenerierten zellulosefasern | |
WO2005118923A1 (de) | Verfahren zur herstellung von cellulosischen formkörpern | |
DE19842557C1 (de) | Verfahren zur Herstellung cellulosischer Formkörper | |
DE1949335A1 (de) | Verfahren zur Herstellung von Cellulose-Derivaten | |
DE744891C (de) | Verfahren zur Herstellung von Kunstseide, Fasern und Faeden aus Viscose | |
DE1234916B (de) | Verfahren zur Herstellung von aus regenerierter Cellulose bestehenden Faeden, Fasernoder Folien | |
AT413285B (de) | Verfahren zum waschen eines saugfähigen materials | |
DE102005027349A1 (de) | Verfahren und Vorrichtung zum Nachbehandeln venetzter Cellulose-Fasern mit einer Bisulfitverbindung | |
DD238984A5 (de) | Verfahren zur faellung von cellulosecarbamat | |
AT310923B (de) | Verfahren zur Herstellung von Fasern aus regenerierter Cellulose mit hoher Kräuselung und hoher Dehnung | |
DE692934C (de) | Verfahren zur Herstellung von kuenstlichen Gebilden aus Loesungen der Xanthate von Oxalkylcellulosen | |
DE1494745A1 (de) | Verfahren zur Herstellung von Faeden oder Fasern aus Viscose | |
DE1068858B (de) | Verfahren zur Herstellung regenerierter Cellulosefäden aus einer Viskose | |
DE1814565C3 (de) | Fäden aus regenerierter Cellulose und Verfahren zu ihrer Herstellung | |
DE1469064C (de) | Verfahren zum Herstellen von aus regenerierter Cellulose bestehenden Fäden, Fasern oder Folien | |
AT130200B (de) | Verfahren zur Herstellung von künstlichen Fäden oder anderen Produkten. | |
DD211814A1 (de) | Verfahren zur herstellung von kupferoxid-ammoniak-cellulose-spinnloesung | |
DE1259499B (de) | Verfahren zur Herstellung von Regeneratcellulose-Stapelfasern | |
EP0178293A2 (de) | Verfahren zur Herstellung von Cellulosefäden bzw. -fasern sowie Einrichtung zur Durchführung des Verfahrens |
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: 20010326 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
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 CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040121 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;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.SCRIBED TIME-LIMIT Effective date: 20040121 Ref country code: IE 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: 20040121 Ref country code: CY 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: 20040121 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: GERMAN |
|
REF | Corresponds to: |
Ref document number: 59908380 Country of ref document: DE Date of ref document: 20040226 Kind code of ref document: P |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20040218 |
|
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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040421 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: 20040421 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES 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: 20040502 |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
LTIE | Lt: invalidation of european patent or patent extension |
Effective date: 20040121 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
ET | Fr: translation filed | ||
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: 20040928 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040928 Ref country code: FI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040928 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040928 |
|
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: 20040929 |
|
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: 20040930 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040930 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040930 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040930 |
|
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 |
Effective date: 20041022 |
|
BERE | Be: lapsed |
Owner name: *LENZING A.G. Effective date: 20040930 |
|
EUG | Se: european patent has lapsed | ||
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20040928 |
|
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: 20050531 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20050912 Year of fee payment: 7 |
|
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: 20070403 |
|
BERE | Be: lapsed |
Owner name: *LENZING A.G. Effective date: 20040930 |
|
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: 20040621 |