EP0902852B1 - Verfahren zur herstellung eines cellulosischen garns - Google Patents
Verfahren zur herstellung eines cellulosischen garns Download PDFInfo
- Publication number
- EP0902852B1 EP0902852B1 EP97927053A EP97927053A EP0902852B1 EP 0902852 B1 EP0902852 B1 EP 0902852B1 EP 97927053 A EP97927053 A EP 97927053A EP 97927053 A EP97927053 A EP 97927053A EP 0902852 B1 EP0902852 B1 EP 0902852B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- yarns
- aqueous alkaline
- solution
- treatment
- alkaline solution
- 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
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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 method for producing a cellulosic yarn by spinning a possibly still water and optionally a stabilizer-containing solution of cellulose in a tertiary amine oxide to fibers or filaments, cases, Washing and drying.
- WO95 / 24524 discloses a method for color properties to improve fabrics from so-called Lyocell yarns.
- Lyocell yarns are solvent-spun cellulose yarns that by spinning a solution of cellulose in one organic solvents are produced. With the solvent it is essentially an aqueous tertiary amine oxide, for example N-methylmorpholine-N-oxide (NMMO).
- NMMO N-methylmorpholine-N-oxide
- fabrics from the named Cellulose yarns undergo mercerization, i.e. with a treated alkaline solution. This mercerization corresponds in principle the one that is common for cotton fabrics and it will an aqueous NaOH solution with a Concentration of 10 to 30% by weight at room temperature or slightly elevated temperature (e.g.
- WO95 / 24524 in which aqueous NaOH solutions with a concentration of 14% by weight or 25 % By weight was used, the treatment of tissues was carried out from Lyocell yarns at room temperature over a period of 45 Seconds. This gave tissues after dyeing had a deeper shade than non-mercerized ones Tissue.
- the invention was therefore based on the object of a method for Production of cellulosic yarns by spinning one possibly still water and possibly containing a stabilizer Solution of cellulose in a tertiary amine oxide to fibers or Filaments, cases, washing and drying are available too with the disadvantages described above at least be reduced.
- the treatment is preferably carried out with the aqueous alkaline Solution over a period of 1 to 15 seconds, especially preferably 1 to 10 seconds, in particular 2 to 6 seconds.
- An aqueous NaOH or KOH solution is preferably used.
- the concentration of alkali in the aqueous alkaline solution should be between 0.5 and 20% by weight, preferably between 10 and 14 % By weight.
- the aqueous alkaline solution can be more inorganic or organic auxiliaries, such as in particular Contain emulsifiers, salts, glycerin or the like.
- the treatment temperature has a range from 0 to 60 ° C proven to be favorable, with 20 to 60 ° C, in particular 40 to 60 ° C are preferred.
- treatment with the aqueous alkaline solution to yarns that were previously made have not been dried.
- the treatment is therefore preferably carried out after washing the yarn. Implementation of the treatment with the aqueous alkaline solution before washing, i.e. to felling is also possible, but complicates Recovery of the tertiary amine oxide from the wash water, because in the subsequent washing the tertiary amine oxide and Alkaline solution get into the wash water.
- aqueous alkaline solution After treatment with the aqueous alkaline solution should the yarn in an aqueous acidic solution, such as an acetic acid solution, neutralized, washed again and then dried.
- an aqueous acidic solution such as an acetic acid solution
- tertiary amine oxide preferably used N-methylmorpholine-N-oxide (NMMO) and the cellulose solution may contain propyl gallic acid as Stabilizer.
- NMMO N-methylmorpholine-N-oxide
- L (1-10) The main reason for this effect is the increase in the crystallite size L (1-10) .
- This crystal dimension in particular is influenced by treatment with an aqueous alkaline solution.
- L (1-10) has values in the range from 3 to 4 nm. Treating the yarns with aqueous alkaline solution results in a 50% increase in L (1-10) .
- the wet abrasion test equipment For measuring the tendency to fibrillation of cellulosic yarns serves the wet abrasion test apparatus shown schematically in the figure.
- the wet abrasion test equipment consists of essentially from those designated by reference numerals 1 to 6 Elements that are described in more detail below.
- the yarn 2 is fixed in a PVC block 1.
- the abrasion will generated by the yarn 2 via a rotating glass rod 5 with 6 mm diameter, on which a ceramic rod 4th with 2.5 mm diameter is attached.
- the glass rod 5 is in a distance of 80 mm to the PVC block 1.
- the Glass rod 5 and with it the ceramic rod 4 rotate with one Speed of 25 revolutions per minute.
- the distance of the weight 6 to the glass rod 5 is 60 mm.
- the wet scrub test was carried out on the following Examples carried out over a minute or two. With defined and reproducible fibrillation of the apparatus was graded on a scale from 1 to 6 microscopic evaluation of the scrubbed yarn area rated.
- Primary fibrillation means that only on the fiber surface Fibrils are observed.
- Secondary fibrillation means that the fibrils are also in the deeper layers of the filaments can be observed. The stronger the secondary fibrillation progresses, the longer and the fibrils become thicker.
- the wet abrasion test was carried out for each of the following examples carried out five times each and an average grade calculated.
- a high weight loss is economical disadvantageous and also makes recovery very difficult the alkaline solution if this after cleaning again to be used in the process.
- the solved Cellulose concentrates in the aqueous over time alkaline solution.
- the separation of dissolved cellulose As such, the aqueous alkaline solution is already there difficult.
- a separation of the dissolved cellulose for example via centrifugation or filtration, but is definitely with higher costs and with loss of alkaline solution connected so that the lowest possible weight loss is sought should be in order to minimize cellulose in the to dissolve aqueous alkaline solution.
- weight loss also affects Yarn properties and leads to filament or fiber breaks and Lint formation, which in turn affects the processability of the yarn negatively influenced and leads to a reduction in quality.
- Example 4 While in Examples 1 to 3 the yarns are in a bath aqueous NaOH immersed for a certain time and thus stress-free treatment with the aqueous alkaline Solution were subjected in Example 4 each dried yarns (trial Nos. 1 to 4) and not before dried yarns (Experiment Nos. 5 to 13) continuously a bath with aqueous NaOH was drawn through. In contrast to Examples 1 to 3 were carried out according to Example 4 thus not tension-free, but in such a way that the yarn under one Tension in the order of 2 to 10 cN stood. The However, tensile stress should not exceed 10 cN if possible, otherwise the yarn could be stretched again the desired effect of reducing the would reduce fibrillation.
- Tables 5 and 6 show textile data of yarns produced according to the invention (Table 5) and of comparison yarns (Table 6).
- the treatment with the aqueous alkaline solution was carried out continuously, as described in Example 4.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Artificial Filaments (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Description
- Note 1 keinerlei Fibrillen
- Note 2 schwache Primärfibrillierung
- Note 3 starke Primärfibrillierung
- Note 4 schwache Sekundärfibrillierung
- Note 5 starke Sekundärfibrillierung
- Note 6 die Schädigung der gesamten Faseroberfläche durch Primär- und Sekundärfibrillierung, wie sie an unbehandelten Garnen beobachtet wird.
Vers. Nr. | Zustand | C/Gew.% | T/°C | t/s | Note | |
1 min. | 2 min. | |||||
1 | getr. | unbeh. | - | - | 5 | 6 |
2 | getr. | 12,0 | 60 | 2 | 5 | 6 |
3 | getr. | 12,0 | 60 | 5 | 5 | 6 |
4 | getr. | 12,0 | 60 | 10 | 4 | 5 |
5 | getr. | 12,0 | 60 | 30 | 3 | 6 |
6 | getr. | 12,0 | 60 | 600 | 2 | 4 |
7 | n. getr. | 12,0 | 60 | 2 | 3 | 5 |
8 | n. getr. | 12,0 | 60 | 5 | 2 | 3 |
9 | n. getr. | 12,0 | 60 | 10 | 2 | 3 |
10 | n. getr. | 12,0 | 60 | 30 | 2 | 3 |
11 | n. getr. | 12,0 | 60 | 600 | 2 | 3 |
Vers. Nr. | C/Gew.% | T/°C | t/s | Gewichtsverlust/Gew.% |
1 | 7,0 | 22 | 5 | -0,5 |
2 | 7,0 | 22 | 10 | -0,9 |
3 | 7,0 | 22 | 40 | -3,9 |
4 | 7,0 | 22 | 60 | -4,2 |
5 | 7,0 | 60 | 5 | -0,4 |
6 | 7,0 | 60 | 10 | -1,0 |
7 | 7,0 | 60 | 40 | -1,9 |
8 | 7,0 | 60 | 60 | -2,4 |
9 | 9,0 | 22 | 2 | -1,1 |
10 | 9,0 | 22 | 5 | -2,5 |
11 | 9,0 | 22 | 10 | -3,6 |
12 | 9,0 | 22 | 40 | -7,6 |
13 | 9,0 | 22 | 60 | -8,6 |
14 | 9,0 | 60 | 5 | -1,4 |
15 | 9,0 | 60 | 10 | -2,4 |
16 | 9,0 | 60 | 40 | -2,7 |
17 | 9,0 | 60 | 60 | -2,9 |
18 | 11,0 | 22 | 5 | -1,8 |
19 | 11,0 | 22 | 10 | -2,8 |
20 | 11,0 | 22 | 40 | -4,4 |
21 | 11,0 | 22 | 60 | -4,5 |
22 | 11,0 | 60 | 5 | -1,2 |
23 | 11,0 | 60 | 10 | -2,3 |
24 | 11,0 | 60 | 40 | -3,4 |
25 | 11,0 | 60 | 60 | -3,5 |
26 | 12,0 | 22 | 2 | -0,6 |
27 | 12,0 | 22 | 5 | -1,0 |
28 | 12,0 | 22 | 10 | -2,0 |
29 | 12,0 | 22 | 40 | -2,8 |
30 | 12,0 | 22 | 60 | -3,2 |
31 | 12,0 | 60 | 5 | -0,4 |
32 | 12,0 | 60 | 10 | -1,6 |
33 | 12,0 | 60 | 40 | -2,6 |
34 | 12,0 | 60 | 60 | -2,6 |
Vers. Nr. | Zustand | C/Gew.% | T/°C | t/s | Note | |
1 min. | 2 min. | |||||
1 | n. getr. | 0,5 | 22 | 10 | 3 | 6 |
2 | n. getr. | 0,5 | 60 | 10 | 4 | 6 |
3 | n. getr. | 1,0 | 22 | 10 | 3 | 6 |
4 | n. getr. | 1,0 | 60 | 10 | 4 | 6 |
5 | n. getr. | 3,0 | 22 | 10 | 3 | 6 |
6 | n. getr. | 3,0 | 60 | 10 | 2 | 5 |
7 | n. getr. | 5,0 | 22 | 10 | 2 | 6 |
8 | n. getr. | 5,0 | 60 | 10 | 2 | 5 |
9 | n. getr. | 7,0 | 22 | 10 | 2 | 5 |
10 | n. getr. | 7,0 | 60 | 10 | 2 | 4 |
11 | n. getr. | 10,0 | 22 | 10 | 2 | 4 |
12 | n. getr. | 10,0 | 60 | 10 | 2 | 3 |
13 | n. getr. | 12,0 | 22 | 10 | 2 | 3 |
14 | n. getr. | 12,0 | 60 | 10 | 2 | 3 |
15 | n. getr. | 15,0 | 22 | 10 | 2 | 4 |
16 | n. getr. | 15,0 | 60 | 10 | 2 | 4 |
17 | n. getr. | 20,0 | 22 | 10 | 3 | 5 |
18 | n. getr. | 20,0 | 60 | 10 | 2 | 5 |
Vers. Nr. | Zustand | C/Gew.% | T/°C | t/s | Note | |
1 min. | 2 min. | |||||
1 | getr. | 10,0 | 22 | 4 | 6 | - |
2 | getr. | 10,0 | 60 | 4 | 6 | - |
3 | getr. | 12,0 | 22 | 4 | 6 | - |
4 | getr. | 12,0 | 60 | 4 | 6 | - |
5 | n. getr. | 10,0 | 22 | 4 | 2 | 4 |
6 | n. getr. | 10,0 | 40 | 4 | 1 | 3 |
7 | n. getr. | 10,0 | 60 | 4 | 2 | 3 |
8 | n. getr. | 11,0 | 22 | 4 | 2 | 3 |
9 | n. getr. | 11,0 | 40 | 4 | 3 | 4 |
10 | n. getr. | 11,0 | 60 | 4 | 3 | 4 |
11 | n. getr. | 12,0 | 22 | 4 | 3 | 4 |
12 | n. getr. | 12,0 | 40 | 4 | 3 | 4 |
13 | n. getr. | 12,0 | 60 | 4 | 3 | 4 |
Vers. Nr. | C/Gew.% | T/°C | t/s | Dehnung % | Festigkeit cN/tex | Modul 5% cN/tex |
1 | - | 22 | 4 | 8,0 | 35 | 27 |
2 | 7,0 | 22 | 4 | 9,0 | 37 | 26 |
3 | 7,0 | 60 | 4 | 7,5 | 33 | 26 |
4 | 10,0 | 22 | 4 | 7,3 | 34 | 28 |
5 | 10,0 | 60 | 4 | 6,7 | 33 | 28 |
6 | 12,0 | 22 | 4 | 7,7 | 35 | 27 |
7 | 12,0 | 60 | 4 | 7,8 | 36 | 28 |
Vers. Nr. | C/Gew.% | T/°C | t/s | Dehnung % | Festigkeit cN/tex | Modul 5% cN/tex |
1 | - | 22 | 4 | 5,8 | 34 | 31 |
2 | 10,0 | 22 | 4 | 5,6 | 30 | 28 |
3 | 10,0 | 60 | 4 | 6,3 | 31 | 27 |
4 | 12,0 | 22 | 4 | 5,8 | 31 | 28 |
5 | 12,0 | 60 | 4 | 5,9 | 29 | 26 |
Claims (10)
- Verfahren zur Herstellung eines cellulosischen Garns durch Verspinnen einer ggf. noch Wasser und ggf. einen Stabilisator enthaltenden Lösung von Cellulose in einem tertiären Aminoxid zu Fasern oder Filamenten, Fällen, Waschen und Trocknen, dadurch gekennzeichnet, daß die Garne vor dem Trocknen mit einer wässrigen alkalischen Lösung über einen Zeitraum kürzer als 20 Sekunden Eintauchzeit behandelt werden.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Behandlung mit der wässrigen alkalischen Lösung über einen Zeitraum von 1 bis 10, bevorzugt 2 bis 6 Sekunden erfolgt.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß als wässrige alkalische Lösung eine NaOH- oder KOH-Lösung eingesetzt wird.
- Verfahren nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß die Konzentration an Alkali in der wässrigen alkalischen Lösung zwischen 0,5 und 20 Gew.%, bevorzugt zwischen 10 und 14 Gew.%, beträgt.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die wässrige alkalische Lösung weitere anorganische oder organische Hilfsmittel enthält.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß als Hilfsmittel Emulgatoren, Salze oder Glycerin eingesetzt werden.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Behandlung bei einer Temperatur von 0 bis 60 °C, bevorzugt 20 bis 60 °C durchgeführt wird.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Behandlung mit der wässrigen alkalischen Lösung nach dem Waschen der Garne erfolgt.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Garne nach der Behandlung mit der wässrigen alkalischen Lösung in einer wässrigen sauren Lösung neutralisiert werden, gewaschen und anschließend getrocknet werden.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß als tertiäres Aminoxid N-Methylmorpholin-N-oxid eingesetzt wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19621602 | 1996-05-30 | ||
DE19621602 | 1996-05-30 | ||
PCT/EP1997/002742 WO1997046745A1 (de) | 1996-05-30 | 1997-05-27 | Verfahren zur herstellung eines cellulosischen garns |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0902852A1 EP0902852A1 (de) | 1999-03-24 |
EP0902852B1 true EP0902852B1 (de) | 2000-03-01 |
Family
ID=7795617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97927053A Expired - Lifetime EP0902852B1 (de) | 1996-05-30 | 1997-05-27 | Verfahren zur herstellung eines cellulosischen garns |
Country Status (10)
Country | Link |
---|---|
US (1) | US6042767A (de) |
EP (1) | EP0902852B1 (de) |
JP (1) | JP2000511598A (de) |
AT (1) | ATE190098T1 (de) |
AU (1) | AU3168297A (de) |
DE (1) | DE59701182D1 (de) |
ES (1) | ES2145609T3 (de) |
ID (1) | ID18177A (de) |
TW (1) | TW382030B (de) |
WO (1) | WO1997046745A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT411769B (de) * | 2002-07-12 | 2004-05-25 | Chemiefaser Lenzing Ag | Verfahren zur herstellung cellulosischer formkörper |
US20050278868A1 (en) * | 2004-05-21 | 2005-12-22 | Tetsutaro Fumisi | Method of producing cotton fiber product having smooth surfaces and cotton-regenerated cellulose compound yarn or fabric |
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 |
EP3494254B1 (de) | 2016-08-04 | 2021-09-29 | PVH Corp. | Bügelfreie stoffe und kleidungsstücke sowie verfahren zur endfertigung derselben |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9103297D0 (en) * | 1991-02-15 | 1991-04-03 | Courtaulds Plc | Fibre production method |
US5662858A (en) * | 1993-04-21 | 1997-09-02 | Lenzing Aktiengesellschaft | Process for the production of cellulose fibres having a reduced tendency to fibrillation |
GB9404510D0 (en) * | 1994-03-09 | 1994-04-20 | Courtaulds Fibres Holdings Ltd | Fibre treatment |
GB9407496D0 (en) * | 1994-04-15 | 1994-06-08 | Courtaulds Fibres Holdings Ltd | Fibre treatment |
-
1997
- 1997-05-27 DE DE59701182T patent/DE59701182D1/de not_active Expired - Fee Related
- 1997-05-27 JP JP10500189A patent/JP2000511598A/ja active Pending
- 1997-05-27 WO PCT/EP1997/002742 patent/WO1997046745A1/de active IP Right Grant
- 1997-05-27 AU AU31682/97A patent/AU3168297A/en not_active Abandoned
- 1997-05-27 ES ES97927053T patent/ES2145609T3/es not_active Expired - Lifetime
- 1997-05-27 US US09/180,867 patent/US6042767A/en not_active Expired - Fee Related
- 1997-05-27 EP EP97927053A patent/EP0902852B1/de not_active Expired - Lifetime
- 1997-05-27 AT AT97927053T patent/ATE190098T1/de not_active IP Right Cessation
- 1997-05-28 TW TW086107240A patent/TW382030B/zh not_active IP Right Cessation
- 1997-05-30 ID IDP971825A patent/ID18177A/id unknown
Also Published As
Publication number | Publication date |
---|---|
ES2145609T3 (es) | 2000-07-01 |
ID18177A (id) | 1998-03-12 |
US6042767A (en) | 2000-03-28 |
AU3168297A (en) | 1998-01-05 |
ATE190098T1 (de) | 2000-03-15 |
JP2000511598A (ja) | 2000-09-05 |
TW382030B (en) | 2000-02-11 |
WO1997046745A1 (de) | 1997-12-11 |
DE59701182D1 (de) | 2000-04-06 |
EP0902852A1 (de) | 1999-03-24 |
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