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WO1997023666A1 - Corps moules en cellulose et procede de production correspondant - Google Patents

Corps moules en cellulose et procede de production correspondant Download PDF

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Publication number
WO1997023666A1
WO1997023666A1 PCT/AT1996/000257 AT9600257W WO9723666A1 WO 1997023666 A1 WO1997023666 A1 WO 1997023666A1 AT 9600257 W AT9600257 W AT 9600257W WO 9723666 A1 WO9723666 A1 WO 9723666A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulp
bleached
fibers
chlorine
cellulose
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.)
Ceased
Application number
PCT/AT1996/000257
Other languages
German (de)
English (en)
Inventor
Hartmut Rüf
Dieter Eichinger
Gabriele Schild
Wilhelm Feilmair
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3527728&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1997023666(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to EP96942178A priority Critical patent/EP0811086B1/fr
Priority to JP52314797A priority patent/JP4326023B2/ja
Priority to AU11325/97A priority patent/AU708427B2/en
Priority to HK98111355.9A priority patent/HK1018082B/xx
Priority to CA002212995A priority patent/CA2212995C/fr
Application filed by Lenzing AG, Chemiefaser Lenzing AG filed Critical Lenzing AG
Priority to MX9706413A priority patent/MX9706413A/es
Priority to BR9607326A priority patent/BR9607326A/pt
Priority to DE59600279T priority patent/DE59600279D1/de
Publication of WO1997023666A1 publication Critical patent/WO1997023666A1/fr
Priority to NO19973720A priority patent/NO310665B1/no
Anticipated expiration legal-status Critical
Ceased 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
    • D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
    • D06L4/50—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs by irradiation or ozonisation

Definitions

  • the invention relates to a cellulose molding, in particular a cellulose fiber, and a method for its production.
  • NMMO N-Methylmorpholine-N-oxide
  • Other amine oxides are e.g. in EP-A - 0 553 070.
  • a method of making moldable cellulose solutions is e.g. known from EP-A-0 356 419.
  • the production of cellulosic moldings using tertiary amine oxides is generally referred to as the amine oxide process.
  • EP-A-0 356 419 describes an amine oxide process for the preparation of spinnable cellulose solutions which uses, among other things, a suspension of cellulose in liquid, aqueous N-methylmorpholine-N-oxide (NMMO) as the starting material.
  • NMMO N-methylmorpholine-N-oxide
  • This method consists in that the suspension in a thin film treatment apparatus in one stage and continuously in a malleable solution is transferred.
  • the moldable solution is finally spun into filaments in a molding tool, for example a spinneret, which are passed through an air gap in which they are stretched into a precipitation bath, where the cellulose is precipitated.
  • the cellulose fibers obtained are then washed.
  • the raw pulp is blended with a range of bleaching agents, e.g. elemental chlorine, chlorine compounds, such as hypochlorite and chlorine dioxide, oxygen, peroxide and ozone, are implemented, the reaction being carried out with a combination of these chemicals in a specific sequence, which is referred to as the bleaching sequence.
  • bleaching agents e.g. elemental chlorine, chlorine compounds, such as hypochlorite and chlorine dioxide, oxygen, peroxide and ozone
  • Bleaching agents containing chlorine produce chlorinated products to varying degrees during pulp bleaching, which are difficult to degrade and for the most part end up in wastewater. These processes are therefore questionable for environmental reasons, and the use of chlorine-containing bleaches and especially elemental chlorine is being increasingly suppressed. However, the quality of the Bleaching off, since elemental chlorine has a high bleaching power.
  • hypochlorite Of the chlorine compounds, chlorine dioxide bleaches better than hypochlorite, but is more expensive than the more commonly used hypochlorite.
  • ECF pulp bleached with hypochlorite is referred to as ECF hypochlorite pulp.
  • the so-called whiteness is a measure of the intensity of the bleaching. It is known from the viscose process that there is a relationship between the whiteness of a bleached pulp and the whiteness of the cellulose products made from this pulp in such a way that pulps with a higher whiteness can generally be processed into fibers with a likewise higher whiteness.
  • the aim of the invention is to provide a process by means of which cellulosic shaped articles can be produced which, with the same initial degree of whiteness of the cellulose used and other similar procedures, have a higher degree of whiteness than cellulosic ones Shaped bodies that were made from an ECF hypochlorite pulp.
  • Pulp is bleached with a bleach with which
  • the bleach is not chlorine or a
  • the process according to the invention can be used in particular to produce cellulose fibers with a high degree of whiteness, as well as cellulose films by the dry / wet spinning process.
  • TCF pulps achieve higher fiber whiteness than ECF hypochlorite pulps with the same whiteness of the starting pulp, and that there is the positive side effect that the fibers can be produced in a particularly environmentally friendly manner in this way.
  • the invention also relates to the bleaching of fibers which have been produced by the amine oxide process with chlorine-free bleaches, such as oxygen, ozone and in particular hydrogen peroxide.
  • a preferred variant of the process according to the invention is characterized in that the fibers or the films produced according to the invention are bleached with a bleaching agent, with the proviso that the bleaching agent does not contain chlorine or a chlorine compound.
  • N-methyl morpholine-N-oxide has proven particularly useful as the tertiary amine oxide.
  • the invention also relates to cellulosic moldings, in particular cellulose fibers and films, with a high degree of whiteness, which can be produced by the process according to the invention.
  • the invention further relates to the use of a pulp bleached with a bleaching agent for the production of cellulosic shaped articles by the amine oxide process, with the proviso that the bleaching agent does not contain chlorine or a chlorine compound.
  • the pulp (beech sulfite pulp type) was first bleached using an alkaline, peroxide-enhanced oxygen extraction, then with ozone and finally with peroxide according to known processes.
  • the individual bleaching processes are described, for example, in R.P. Singh; The Bleaching of Pulp, TAPPI Press, Atlanta, USA, and in EP-A - 0 426 652.
  • the whiteness of the TCF pulp obtained which was determined in accordance with ISO 3688, was 90.6.
  • the pulp had a rapid copper viscosity according to Zellcheming ZM IV / 30/62 of 19.8 Pa.s and an ⁇ content of 90.9.
  • This TCF pulp was then processed in a known manner in a stirred kettle to give a spinning composition of 12% cellulose, 77% NMMO and 11% water.
  • the viscosity the spinning mass was 1630 Pa.s (Temp .: 90 ° C, shear rate: 0.1 s).
  • the spinning mass was spun into fibers at 120 ° C. through a spinneret with spinning holes, the diameter of which was 100 ⁇ m, in accordance with the known wet / dry spinning process (see, for example, EP-A - 0 584 318).
  • the degree of whiteness of the fibers produced according to the invention was around 50.
  • Oxygen extraction then bleached with hypochlorite and finally with peroxide.
  • the whiteness of the ECF hypochlorite pulp obtained was 91.6 and thus practically the same as the TCF pulp produced in the example.
  • a spinning mass and fibers were then produced analogously to the example above.
  • the fibers produced had a CIELAB degree of whiteness of about 39. This makes it clear that the TCF pulp bleached according to the invention without any chlorine compound can be processed into fibers with a higher degree of whiteness than that of i.a. ECF pulp bleached with hypochlorite.
  • the fibers produced were then bleached as described in the example above.
  • the bleached fibers had a CIELAB whiteness of about 54.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Artificial Filaments (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Materials For Medical Uses (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)

Abstract

L'invention concerne un procédé de production de corps moulés en cellulose à haut degré de blanc, comportant les étapes suivantes: la cellulose est blanchie par un agent de blanchiment ne contenant ni chlore ni composé chloré; la cellulose blanchie avec l'agent de blanchiment est dissoute dans un aminoxyde tertiaire aqueux, ce qui donne une solution cellulosique moulable; la solution cellulosique moulable est transformée en corps moulés.
PCT/AT1996/000257 1995-12-22 1996-12-19 Corps moules en cellulose et procede de production correspondant Ceased WO1997023666A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DE59600279T DE59600279D1 (de) 1995-12-22 1996-12-19 Verfahren zur Herstellung eines Celluloseformkörpers
JP52314797A JP4326023B2 (ja) 1995-12-22 1996-12-19 セルロース成形品及びその製造方法
AU11325/97A AU708427B2 (en) 1995-12-22 1996-12-19 Cellulose moulded body and process for its production
HK98111355.9A HK1018082B (en) 1995-12-22 1996-12-19 Cellulose moulded body and process for its production
CA002212995A CA2212995C (fr) 1995-12-22 1996-12-19 Corps moules en cellulose et procede de production correspondant
EP96942178A EP0811086B1 (fr) 1995-12-22 1996-12-19 Procede de Production des Corps moulés en Cellulose
MX9706413A MX9706413A (es) 1995-12-22 1996-12-19 Articulo de celulosa moldeado y metodo para producir el mismo.
BR9607326A BR9607326A (pt) 1995-12-22 1996-12-19 Orpo moldado de celulose e processo para sua produção
NO19973720A NO310665B1 (no) 1995-12-22 1997-08-13 Framgangsmåte ved fremstilling av celluloseholdige fibre samt anvendelse av bleket, klorfri cellulose

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0209995A AT402827B (de) 1995-12-22 1995-12-22 Celluloseformkörper und verfahren zu seiner herstellung
ATA2099/95 1995-12-22

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US08918889 A-371-Of-International 1997-08-08
US10/228,578 Continuation US20030000662A1 (en) 1995-12-22 2002-08-27 Cellulose moulded body and process for its production

Publications (1)

Publication Number Publication Date
WO1997023666A1 true WO1997023666A1 (fr) 1997-07-03

Family

ID=3527728

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1996/000257 Ceased WO1997023666A1 (fr) 1995-12-22 1996-12-19 Corps moules en cellulose et procede de production correspondant

Country Status (14)

Country Link
EP (1) EP0811086B1 (fr)
JP (1) JP4326023B2 (fr)
CN (1) CN1079848C (fr)
AT (2) AT402827B (fr)
AU (1) AU708427B2 (fr)
BR (1) BR9607326A (fr)
CA (1) CA2212995C (fr)
DE (1) DE59600279D1 (fr)
ES (1) ES2119576T3 (fr)
MX (1) MX9706413A (fr)
MY (1) MY113146A (fr)
NO (1) NO310665B1 (fr)
WO (1) WO1997023666A1 (fr)
ZA (1) ZA9610469B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001025515A1 (fr) * 1999-10-07 2001-04-12 Alceru Schwarza Gmbh Procede de production de corps façonnes en cellulose
EP1402092A4 (fr) * 2001-04-24 2004-08-04 Weyerhaeuser Co Pate alcaline a sciure a faible degre moyen de polymerisation et procede de production correspondant

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4645093B2 (ja) * 2003-08-13 2011-03-09 王子製紙株式会社 漂白パルプの製造方法
DE102004024028B4 (de) * 2004-05-13 2010-04-08 Lenzing Ag Lyocell-Verfahren und -Vorrichtung mit Presswasserrückführung
CN100359050C (zh) * 2004-11-16 2008-01-02 唐山三友集团化纤有限公司 高白强力细旦粘胶短纤维及其生产工艺
CN1302160C (zh) * 2005-01-04 2007-02-28 陈建旭 一种用植物茎杆生产纤维的方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1083221B (de) * 1958-05-29 1960-06-15 Degussa Verfahren zum Bleichen von natuerlichen oder synthetischen Fasern und Textilien sowie Zellstoff und Holzschliff mit waessrigen peroxydhaltigen Behandlungsbaedern
DE2913589A1 (de) * 1979-03-02 1980-09-11 Akzona Inc Geformter zellulosegegenstand
EP0426652A1 (fr) * 1989-10-30 1991-05-08 Lenzing Aktiengesellschaft Procédé exempt de chlore pour le blanchiment de pâtes cellulosiques
EP0441113A1 (fr) * 1990-02-07 1991-08-14 Lenzing Aktiengesellschaft Procédé exempt de chlore pour le blanchiment de pâte cellulosique
WO1992014871A1 (fr) * 1991-02-15 1992-09-03 Courtaulds Plc Procede de production de fibres

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
SE9301160L (sv) * 1992-08-28 1994-03-01 Sunds Defibrator Ind Ab Förfarande för behandling av processvatten

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1083221B (de) * 1958-05-29 1960-06-15 Degussa Verfahren zum Bleichen von natuerlichen oder synthetischen Fasern und Textilien sowie Zellstoff und Holzschliff mit waessrigen peroxydhaltigen Behandlungsbaedern
DE2913589A1 (de) * 1979-03-02 1980-09-11 Akzona Inc Geformter zellulosegegenstand
EP0426652A1 (fr) * 1989-10-30 1991-05-08 Lenzing Aktiengesellschaft Procédé exempt de chlore pour le blanchiment de pâtes cellulosiques
EP0441113A1 (fr) * 1990-02-07 1991-08-14 Lenzing Aktiengesellschaft Procédé exempt de chlore pour le blanchiment de pâte cellulosique
WO1992014871A1 (fr) * 1991-02-15 1992-09-03 Courtaulds Plc Procede de production de fibres

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6861023B2 (en) 1996-08-23 2005-03-01 Weyerhaeuser Company Process for making lyocell fiber from sawdust pulp
US7090744B2 (en) 1996-08-23 2006-08-15 Weyerhaeuser Company Process for making composition for conversion to lyocell fiber from sawdust
WO2001025515A1 (fr) * 1999-10-07 2001-04-12 Alceru Schwarza Gmbh Procede de production de corps façonnes en cellulose
KR100661454B1 (ko) * 1999-10-07 2006-12-27 짐머 악티엔게젤샤프트 셀룰로오스 성형체의 제조 방법
US7175792B1 (en) * 1999-10-07 2007-02-13 Zimmer Ag Method for producing cellulose shaped-bodies
EP1402092A4 (fr) * 2001-04-24 2004-08-04 Weyerhaeuser Co Pate alcaline a sciure a faible degre moyen de polymerisation et procede de production correspondant

Also Published As

Publication number Publication date
EP0811086A1 (fr) 1997-12-10
MY113146A (en) 2001-11-30
ATE167242T1 (de) 1998-06-15
CA2212995A1 (fr) 1997-07-03
DE59600279D1 (de) 1998-07-16
ES2119576T3 (es) 1998-10-01
NO973720D0 (no) 1997-08-13
CA2212995C (fr) 2006-09-19
NO310665B1 (no) 2001-08-06
AU1132597A (en) 1997-07-17
BR9607326A (pt) 1997-12-30
ZA9610469B (en) 1997-06-24
ATA209995A (de) 1997-01-15
HK1018082A1 (en) 1999-12-10
JPH11501090A (ja) 1999-01-26
CN1079848C (zh) 2002-02-27
CN1182460A (zh) 1998-05-20
MX9706413A (es) 1997-11-29
AT402827B (de) 1997-09-25
NO973720L (no) 1997-08-13
AU708427B2 (en) 1999-08-05
EP0811086B1 (fr) 1998-06-10
JP4326023B2 (ja) 2009-09-02

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