EP0811086B1 - Verfahren zur Herstellung eines Celluloseformkörpers - Google Patents
Verfahren zur Herstellung eines Celluloseformkörpers Download PDFInfo
- Publication number
- EP0811086B1 EP0811086B1 EP96942178A EP96942178A EP0811086B1 EP 0811086 B1 EP0811086 B1 EP 0811086B1 EP 96942178 A EP96942178 A EP 96942178A EP 96942178 A EP96942178 A EP 96942178A EP 0811086 B1 EP0811086 B1 EP 0811086B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pulp
- bleached
- chlorine
- bleaching agent
- whiteness
- 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
- 229920002678 cellulose Polymers 0.000 title claims abstract description 19
- 239000001913 cellulose Substances 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title description 9
- 238000000034 method Methods 0.000 claims abstract description 28
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000007844 bleaching agent Substances 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 18
- 239000000460 chlorine Substances 0.000 claims abstract description 17
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 17
- 150000001805 chlorine compounds Chemical class 0.000 claims abstract description 12
- 150000003512 tertiary amines Chemical class 0.000 claims abstract description 7
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 claims description 7
- 150000001412 amines Chemical class 0.000 claims description 6
- 238000000578 dry spinning Methods 0.000 claims description 3
- 238000002166 wet spinning Methods 0.000 claims description 3
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 23
- 239000000835 fiber Substances 0.000 description 21
- 238000004061 bleaching Methods 0.000 description 12
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 150000002978 peroxides Chemical class 0.000 description 5
- 238000009987 spinning Methods 0.000 description 5
- 229920003043 Cellulose fiber Polymers 0.000 description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
- 239000004155 Chlorine dioxide Substances 0.000 description 3
- 235000019398 chlorine dioxide Nutrition 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 229920005610 lignin Polymers 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920000297 Rayon Polymers 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 240000000731 Fagus sylvatica Species 0.000 description 1
- 235000010099 Fagus sylvatica Nutrition 0.000 description 1
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 1
- 229920000433 Lyocell Polymers 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- -1 chlorine compounds Hypochlorite Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001212 derivatisation Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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 producing the same.
- NMMO N-methylmorpholine-N-oxide
- Other amine oxides are e.g. in EP-A - 0 553 070.
- a procedure for the production of moldable cellulose solutions e.g. from the EP-A-0 356 419 known.
- the production of cellulosic Shaped articles using tertiary amine oxides become general referred to as the amine oxide process.
- EP-A-0 356 419 describes an amine oxide process for the preparation spinnable cellulose solutions described as Starting material etc. a suspension of cellulose in liquid, aqueous N-methylmorpholine-N-oxide (NMMO) used.
- NMMO N-methylmorpholine-N-oxide
- This method consists in that the suspension in one Thin film treatment apparatus in one step and continuously in a malleable solution is transferred.
- the malleable solution is finally in a mold, e.g. a spinneret, spun into filaments over an air gap in which they are drawn, taken to a felling bath where the Cellulose is precipitated. Then the obtained Washed cellulose fibers.
- Bleaching processing To prevent unwanted discoloration of the fibers, which is mainly due to Lignin and due to colored organic compounds is to prevent it is known to pre-pulp Bleach processing.
- the raw pulp is under precisely defined conditions with a number of Bleaching agents such as elemental chlorine, chlorine compounds, like hypochlorite and chlorine dioxide, oxygen, peroxide and ozone, implemented, the implementation using a combination of these Chemicals in a specific order, which is called Bleaching sequence is called.
- Bleaches containing chlorine produce in different ways Extent of cellulose bleaching chlorinated products are difficult to degrade and for the most part into wastewater reach. These procedures are therefore for environmental reasons questionable, and the use of chlorine-containing bleaches and especially elemental chlorine is increasing pushed back. However, the quality of the Bleaching off, since elemental chlorine has a high bleaching power owns.
- the prior art also uses bleaching processes that do completely without chlorine compounds. In doing so Combinations of oxygen / peroxide or ozone are used. Of the so bleached pulp is called TCF- (total chlorine free) pulp, since it contains neither elemental chlorine is still bleached with chlorine compounds. In contrast in the literature a pulp that does not contain elementary Chlorine, however, is bleached with chlorine compounds as Designated ECF (elemental chlorine free) pulp.
- ECF hypochlorite pulp For the purposes of this description, an ECF pulp that was bleached with hypochlorite as ECF hypochlorite pulp designated.
- the so-called whiteness is a measure of the intensity of the bleaching. It is from the viscose process known that between the whiteness of a bleached Pulp and the whiteness of this pulp produced cellulose products there is a relationship such that pulps with a higher degree of whiteness in general Process to fibers with a higher degree of whiteness to let.
- the aim of the invention is to provide a method to ask with what cellulosic molded body is produced can be, with the same output whiteness of the used pulps and other similar procedures have a higher degree of whiteness than cellulosic ones Shaped bodies made from an ECF hypochlorite pulp were manufactured.
- the method according to the invention can be used in particular Cellulose fibers with a high degree of whiteness, as well as cellulose films the dry / wet spinning process.
- TCF pulps in same degree of whiteness of the original pulp higher degrees of whiteness of Achieve fibers as ECF hypochlorite pulps, and that the positive side effect occurs that in this way the fibers can be produced particularly environmentally friendly.
- the invention also relates to the bleaching of fibers after the amine oxide process were made with chlorine-free Bleaching agents such as oxygen, ozone and in particular Hydrogen peroxide.
- a preferred variant of the method according to the invention is characterized in that the manufactured according to the invention Fibers or foils are bleached with a bleach with the proviso that the bleach is not chlorine or contains a chlorine compound.
- N-methylmorpholine-N-oxide has been found to be the tertiary amine oxide proven.
- the invention also relates to cellulosic moldings, especially cellulose fibers and foils with a high degree of whiteness, which can be produced by the method according to the invention.
- the invention further relates to the use of a Bleaching agent for the production of bleached pulp cellulosic molded article by the amine oxide process with which Provided that the bleach is not chlorine or a Contains chlorine compound.
- the pulp was used to produce a TCF pulp (Type beech sulfite pulp) first using an alkaline, peroxide-enhanced oxygen extraction, then with ozone and finally bleached with peroxide according to known methods.
- TCF pulp Type beech sulfite pulp
- 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 according to ISO 3688 was 90.6.
- the pulp had one 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 of the spinning mass was 1630 Pa.s (Temp .: 90 ° C, Shear rate: 0.1 s -1 ).
- the spinning mass was at 120 ° C through a spinneret Spinning holes, whose diameter was 100 microns, according to the known wet / dry spinning processes (see e.g. EP-A - 0 584 318) spun into fibers.
- the whiteness of the invention fiber produced was around 50.
- ECF hypochlorite pulp For the production of an ECF hypochlorite pulp, the same starting pulp as in the example above first using a peroxide-reinforced, alkaline Oxygen extraction, then with hypochlorite and finally with Bleached peroxide.
- the whiteness of the ECF hypochlorite pulp obtained was 91.6 and thus practically the same as that in the example manufactured TCF pulp.
- a spinning mass was then produced analogously to the example above and fibers made.
- the fibers produced had one CIELAB whiteness of about 39. This shows that the bleached according to the invention without any chlorine compound TCF pulp processed into fibers with a higher degree of whiteness can be used as the bleached with hypochlorite ECF pulp.
- the bleached fibers had a CIELAB whiteness of about 54.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Toxicology (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material 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)
Description
- Zellstoff mit einem Bleichmittel gebleicht wird, mit der Maßgabe, daß das Bleichmittel nicht Chlor oder eine Chlorverbindung enthält,
- der mit dem Bleichmittel gebleichte Zellstoff in einem wäßrigen tertiären Aminoxid gelöst wird, wobei eine formbare Cellulosellösung erhalten wird, und
- die formbare Celluloselösung zu Formkörpern verarbeitet wird.
Schergeschwindigkeit: 0,1 s-1).
Claims (5)
- Verfahren zur Herstellung cellulosischer Fasern mit hohem Weißgrad, gekennzeichnet durch die Kombination der Maßnahmen, daßZellstoff mit einem Bleichmittel gebleicht wird, mit der Maßgabe, daß das Bleichmittel nicht Chlor oder eine Chlorverbindung enthält,der mit dem Bleichmittel gebleichte Zellstoff in einem wäßrigen tertiären Aminoxid gelöst wird, wobei eine formbare Cellulosellösung erhalten wird, unddie formbare Celluloselösung zu Fasern verarbeitet wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die formbare Celluloselösung nach dem Trokken/Naßspinnverfahren zur Fasern verarbeitet wird.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Fasern mit einem Bleichmittel gebleicht werden, mit der Maßgabe, daß das Bleichmittel nicht Chlor oder eine Chlorverbindung enthält.
- Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß als tertiäres Aminoxid N-Methylmorpholin-N-oxid eingesetzt wird.
- Verwendung eines mit einem Bleichmittel gebleichten Zellstoffs zur Herstellung cellulosischer Formkörper nach dem Aminoxidverfahren, mit der Maßgabe, daß das Bleichmittel nicht Chlor oder eine Chlorverbindung enthält.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT2099/95 | 1995-12-22 | ||
| AT0209995A AT402827B (de) | 1995-12-22 | 1995-12-22 | Celluloseformkörper und verfahren zu seiner herstellung |
| PCT/AT1996/000257 WO1997023666A1 (de) | 1995-12-22 | 1996-12-19 | Celluloseformkörper und verfahren zu seiner herstellung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0811086A1 EP0811086A1 (de) | 1997-12-10 |
| EP0811086B1 true EP0811086B1 (de) | 1998-06-10 |
Family
ID=3527728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96942178A Expired - Lifetime EP0811086B1 (de) | 1995-12-22 | 1996-12-19 | Verfahren zur Herstellung eines Celluloseformkörpers |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP0811086B1 (de) |
| JP (1) | JP4326023B2 (de) |
| CN (1) | CN1079848C (de) |
| AT (2) | AT402827B (de) |
| AU (1) | AU708427B2 (de) |
| BR (1) | BR9607326A (de) |
| CA (1) | CA2212995C (de) |
| DE (1) | DE59600279D1 (de) |
| ES (1) | ES2119576T3 (de) |
| MX (1) | MX9706413A (de) |
| MY (1) | MY113146A (de) |
| NO (1) | NO310665B1 (de) |
| WO (1) | WO1997023666A1 (de) |
| ZA (1) | ZA9610469B (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6605350B1 (en) | 1996-08-23 | 2003-08-12 | Weyerhaeuser Company | Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same |
| DE19948401C1 (de) * | 1999-10-07 | 2001-05-03 | Alceru Schwarza Gmbh | Verfahren zur Herstellung von Cellulose-Formkörpern |
| 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 |
| SE546340C2 (en) * | 2022-02-22 | 2024-10-08 | Ekoligens Ab | Systems and methods for making moulded products from cellulose fibres and moulding agents used in such systems and methods |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL97796C (de) * | 1958-05-29 | |||
| 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 |
| 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 |
| AU636173B2 (en) * | 1989-10-30 | 1993-04-22 | Lenzing Aktiengesellschaft | Method for the chlorine-free bleaching of pulps |
| AT395028B (de) * | 1990-02-07 | 1992-08-25 | Chemiefaser Lenzing Ag | Verfahren zum chlorfreien bleichen von kunstfaserzellstoff |
| GB9103297D0 (en) * | 1991-02-15 | 1991-04-03 | Courtaulds Plc | Fibre production method |
| SE9301160L (sv) * | 1992-08-28 | 1994-03-01 | Sunds Defibrator Ind Ab | Förfarande för behandling av processvatten |
-
1995
- 1995-12-22 AT AT0209995A patent/AT402827B/de not_active IP Right Cessation
-
1996
- 1996-12-10 MY MYPI96005199A patent/MY113146A/en unknown
- 1996-12-12 ZA ZA9610469A patent/ZA9610469B/xx unknown
- 1996-12-19 CN CN96193414A patent/CN1079848C/zh not_active Expired - Lifetime
- 1996-12-19 DE DE59600279T patent/DE59600279D1/de not_active Expired - Lifetime
- 1996-12-19 MX MX9706413A patent/MX9706413A/es unknown
- 1996-12-19 AU AU11325/97A patent/AU708427B2/en not_active Ceased
- 1996-12-19 AT AT96942178T patent/ATE167242T1/de not_active IP Right Cessation
- 1996-12-19 WO PCT/AT1996/000257 patent/WO1997023666A1/de not_active Ceased
- 1996-12-19 CA CA002212995A patent/CA2212995C/en not_active Expired - Fee Related
- 1996-12-19 EP EP96942178A patent/EP0811086B1/de not_active Expired - Lifetime
- 1996-12-19 ES ES96942178T patent/ES2119576T3/es not_active Expired - Lifetime
- 1996-12-19 BR BR9607326A patent/BR9607326A/pt not_active IP Right Cessation
- 1996-12-19 JP JP52314797A patent/JP4326023B2/ja not_active Expired - Lifetime
-
1997
- 1997-08-13 NO NO19973720A patent/NO310665B1/no not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JP4326023B2 (ja) | 2009-09-02 |
| ES2119576T3 (es) | 1998-10-01 |
| ATE167242T1 (de) | 1998-06-15 |
| MY113146A (en) | 2001-11-30 |
| CN1079848C (zh) | 2002-02-27 |
| ATA209995A (de) | 1997-01-15 |
| HK1018082A1 (en) | 1999-12-10 |
| BR9607326A (pt) | 1997-12-30 |
| WO1997023666A1 (de) | 1997-07-03 |
| ZA9610469B (en) | 1997-06-24 |
| CN1182460A (zh) | 1998-05-20 |
| AT402827B (de) | 1997-09-25 |
| MX9706413A (es) | 1997-11-29 |
| AU708427B2 (en) | 1999-08-05 |
| NO973720D0 (no) | 1997-08-13 |
| JPH11501090A (ja) | 1999-01-26 |
| CA2212995A1 (en) | 1997-07-03 |
| CA2212995C (en) | 2006-09-19 |
| NO310665B1 (no) | 2001-08-06 |
| DE59600279D1 (de) | 1998-07-16 |
| AU1132597A (en) | 1997-07-17 |
| EP0811086A1 (de) | 1997-12-10 |
| NO973720L (no) | 1997-08-13 |
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