EP0494852B1 - Verfahren zur Herstellung eines cellulosischen Formkörpers - Google Patents
Verfahren zur Herstellung eines cellulosischen Formkörpers Download PDFInfo
- Publication number
- EP0494852B1 EP0494852B1 EP92890004A EP92890004A EP0494852B1 EP 0494852 B1 EP0494852 B1 EP 0494852B1 EP 92890004 A EP92890004 A EP 92890004A EP 92890004 A EP92890004 A EP 92890004A EP 0494852 B1 EP0494852 B1 EP 0494852B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- air gap
- length
- amounts
- hole diameter
- 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
- 238000000034 method Methods 0.000 title claims description 15
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 229920002678 cellulose Polymers 0.000 claims description 6
- 239000001913 cellulose Substances 0.000 claims description 6
- 150000001412 amines Chemical class 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 description 11
- 229920000642 polymer Polymers 0.000 description 8
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 description 6
- 238000009987 spinning Methods 0.000 description 6
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- 238000000578 dry spinning Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004760 aramid Substances 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000002166 wet spinning Methods 0.000 description 2
- 241000157282 Aesculus Species 0.000 description 1
- JMGZEFIQIZZSBH-UHFFFAOYSA-N Bioquercetin Natural products CC1OC(OCC(O)C2OC(OC3=C(Oc4cc(O)cc(O)c4C3=O)c5ccc(O)c(O)c5)C(O)C2O)C(O)C(O)C1O JMGZEFIQIZZSBH-UHFFFAOYSA-N 0.000 description 1
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- IVTMALDHFAHOGL-UHFFFAOYSA-N eriodictyol 7-O-rutinoside Natural products OC1C(O)C(O)C(C)OC1OCC1C(O)C(O)C(O)C(OC=2C=C3C(C(C(O)=C(O3)C=3C=C(O)C(O)=CC=3)=O)=C(O)C=2)O1 IVTMALDHFAHOGL-UHFFFAOYSA-N 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001891 gel spinning Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- FDRQPMVGJOQVTL-UHFFFAOYSA-N quercetin rutinoside Natural products OC1C(O)C(O)C(CO)OC1OCC1C(O)C(O)C(O)C(OC=2C(C3=C(O)C=C(O)C=C3OC=2C=2C=C(O)C(O)=CC=2)=O)O1 FDRQPMVGJOQVTL-UHFFFAOYSA-N 0.000 description 1
- IKGXIBQEEMLURG-BKUODXTLSA-N rutin Chemical compound O[C@H]1[C@H](O)[C@@H](O)[C@H](C)O[C@@H]1OC[C@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](OC=2C(C3=C(O)C=C(O)C=C3OC=2C=2C=C(O)C(O)=CC=2)=O)O1 IKGXIBQEEMLURG-BKUODXTLSA-N 0.000 description 1
- ALABRVAAKCSLSC-UHFFFAOYSA-N rutin Natural products CC1OC(OCC2OC(O)C(O)C(O)C2O)C(O)C(O)C1OC3=C(Oc4cc(O)cc(O)c4C3=O)c5ccc(O)c(O)c5 ALABRVAAKCSLSC-UHFFFAOYSA-N 0.000 description 1
- 235000005493 rutin Nutrition 0.000 description 1
- 229960004555 rutoside Drugs 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- D01D4/00—Spinnerette packs; Cleaning thereof
- D01D4/02—Spinnerettes
-
- 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
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/06—Wet spinning methods
-
- 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 shaped body, in which a cellulosic amine oxide solution is pressed through a nozzle, then passed through an air gap, optionally stretched therein and finally coagulated in a precipitation bath.
- fibers with good performance properties can only be obtained from high polymers if a "fiber structure" can be achieved (Ullmann, 5th edition vol. A10, 456).
- a fiber structure can be achieved (Ullmann, 5th edition vol. A10, 456).
- melt spinning the fibers are stretched in the warm, plastic state while the molecules are still mobile. Dissolved polymers can be spun dry or wet. In dry spinning, drawing takes place while the solvent escapes or evaporates; the threads extruded into a coagulation bath are drawn during the coagulation. Methods of this type are known and are well described. In all of these cases, it is important that the transition from the liquid state (regardless of whether melt or solution) to the solid state takes place in such a way that the polymer chains or chain packages (i.e. fibrids, fibrils, etc.) are also oriented during thread formation can be.
- EP-A-295 672 describes the production of aramid fibers, which are introduced, stretched and introduced into a non-coagulating medium via an air gap are then coagulated.
- DD-PS 218 121 deals with the spinning of cellulose in amine oxides via an air gap, measures being taken to prevent sticking.
- a disadvantage of this method is that extremely high take-off speeds are required in order to achieve the appropriate textile properties and fineness of the threads. Furthermore, it has been shown in practice that a long air gap on the one hand leads to fiber sticking and on the other hand leads to spinning insecurity and thread breakage in the event of high warpage. Precautions are therefore required to prevent this.
- a method of this type is described in AT-PS 365 663 (or in equivalent US-PS 4,261,943). For large-scale production, however, the number of holes in a spinneret must be very high. In such a case, precautions to prevent the surface stickiness of the freshly extruded threads which enter the precipitant through an air gap are completely inadequate.
- the minimum hole diameter of the nozzle used is at most 150 »m, preferably at most 70» m, and the length of the nozzle channel is at least 1000 »m, preferably about 1500» m, where the minimum hole diameter on the outlet side of the nozzle channel is present over at least 1/4, preferably over at least 1/3, of the length of the nozzle channel.
- the spun thread also has good textile properties: it was found that the elongation at break in particular can be improved. Work capacity - d. H. the product of elongation and strength - behaves inversely proportional to the hole diameter. Furthermore, the loop strength and the associated elongation at break improve, which results in an improved abrasion resistance of the fabrics spun from these fibers. These properties also improve with decreasing hole diameters.
- the nozzle channel is preferably widened conically on the inlet side and cylindrical on the outlet side.
- the use of such nozzles is recommended because of the simpler manufacture; it is difficult to z. B. 1500 »m long nozzle with a diameter of only z. B. 100 »m.
- a nozzle in which the minimum diameter is only provided on the outlet side (e.g. to 1/4 or 1/3 of the length) and which widens conically in the direction of the inlet side is much easier to manufacture and also gives good results.
- Examples 1 to 3 are only for comparison, Examples 4 to 6 are examples according to the invention. Particularly noteworthy is the excellent value of 47.8 for the conditioned fiber strength in Example 6; Such a value is only reached with a delay of 100 with conventional nozzles!
- Examples 1 to 3 A comparison of Examples 1 to 3 with Examples 4 to 6 immediately shows that the elongation at break is also improved by using nozzles according to the invention. Furthermore, it can be seen from Examples 4 to 6 that the product of strength and elongation at break (FFk * FDk), the loop strength and the elongation at break increase in the measurement of the loop strength with decreasing hole diameter.
- a comparison of Example 1 with Example 5 shows that these values can also be improved by using long-channel nozzles according to the invention compared to nozzles with a short channel of the same diameter.
- Examples 2 and 3 show that with a small nozzle channel length, the fiber properties depend on the distortion in the air gap; they get better as the default increases.
- Examples 4 and 5 show that, under comparable conditions (warpage, hole diameter), all textile properties - except the elongation at break - are significantly improved by a long-channel nozzle according to the invention.
- Example 6 shows that by using a small hole diameter of 50 »m, all textile properties are significantly improved.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Woven Fabrics (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0003291A AT395863B (de) | 1991-01-09 | 1991-01-09 | Verfahren zur herstellung eines cellulosischen formkoerpers |
| AT32/91 | 1991-01-09 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0494852A2 EP0494852A2 (de) | 1992-07-15 |
| EP0494852A3 EP0494852A3 (en) | 1993-03-17 |
| EP0494852B1 true EP0494852B1 (de) | 1995-05-17 |
Family
ID=3479723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92890004A Expired - Lifetime EP0494852B1 (de) | 1991-01-09 | 1992-01-09 | Verfahren zur Herstellung eines cellulosischen Formkörpers |
Country Status (24)
| Country | Link |
|---|---|
| US (1) | US5252284A (ru) |
| EP (1) | EP0494852B1 (ru) |
| JP (1) | JPH04308220A (ru) |
| AT (1) | AT395863B (ru) |
| BG (1) | BG60111B2 (ru) |
| BR (1) | BR9200043A (ru) |
| CA (1) | CA2059043A1 (ru) |
| CZ (1) | CZ282528B6 (ru) |
| DE (1) | DE59202175D1 (ru) |
| DK (1) | DK0494852T3 (ru) |
| ES (1) | ES2072746T3 (ru) |
| FI (1) | FI97155C (ru) |
| HU (1) | HU212340B (ru) |
| MX (1) | MX9200080A (ru) |
| NO (1) | NO303696B1 (ru) |
| PH (1) | PH29990A (ru) |
| PL (1) | PL169309B1 (ru) |
| RO (1) | RO107701B1 (ru) |
| RU (1) | RU2072006C1 (ru) |
| SI (1) | SI9112009A (ru) |
| SK (1) | SK279852B6 (ru) |
| TR (1) | TR27259A (ru) |
| YU (1) | YU47623B (ru) |
| ZA (1) | ZA9110195B (ru) |
Families Citing this family (53)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USH1592H (en) * | 1992-01-17 | 1996-09-03 | Viskase Corporation | Cellulosic food casing |
| US5658524A (en) * | 1992-01-17 | 1997-08-19 | Viskase Corporation | Cellulose article manufacturing method |
| US5451364A (en) * | 1992-01-17 | 1995-09-19 | Viskase Corporation | Cellulose food casing manufacturing method |
| 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 |
| US5417909A (en) * | 1992-06-16 | 1995-05-23 | Thuringisches Institut Fur Textil- Und Kunststoff-Forschung E.V. | Process for manufacturing molded articles of cellulose |
| KR100297308B1 (ko) * | 1993-02-16 | 2001-10-24 | 나가이 야타로 | 성형용셀룰로오즈용액및이를사용하는성형방법 |
| US5652001A (en) * | 1993-05-24 | 1997-07-29 | Courtaulds Fibres Limited | Spinnerette |
| MY115308A (en) * | 1993-05-24 | 2003-05-31 | Tencel Ltd | Spinning cell |
| AT399729B (de) * | 1993-07-01 | 1995-07-25 | Chemiefaser Lenzing Ag | Verfahren zur herstellung cellulosischer fasern sowie vorrichtung zur durchführung des verfahrens und deren verwendung |
| AT401271B (de) * | 1993-07-08 | 1996-07-25 | Chemiefaser Lenzing Ag | Verfahren zur herstellung von cellulosefasern |
| AT402738B (de) * | 1993-07-28 | 1997-08-25 | Chemiefaser Lenzing Ag | Spinndüse |
| AT403584B (de) * | 1993-09-13 | 1998-03-25 | Chemiefaser Lenzing Ag | Verfahren und vorrichtung zur herstellung cellulosischer flach- oder schlauchfolien |
| US5603884A (en) * | 1994-11-18 | 1997-02-18 | Viskase Corporation | Reinforced cellulosic film |
| HU220367B (hu) * | 1994-12-02 | 2001-12-28 | Akzo Nobel N.V. | Eljárás cellulóz formatestek előállítására és cellulóz filamentből készült fonal |
| US5984655A (en) * | 1994-12-22 | 1999-11-16 | Lenzing Aktiengesellschaft | Spinning process and apparatus |
| US5658525A (en) * | 1995-08-04 | 1997-08-19 | Viskase Corporation | Cellulose food casing manufacturing method |
| GB9605504D0 (en) * | 1996-03-15 | 1996-05-15 | Courtaulds Plc | Manufacture of elongate members |
| ID17252A (id) * | 1996-04-29 | 1997-12-11 | Akzo Nobel Nv | Proses pembuatan obyek yang terbuat dari selulosa |
| US6221487B1 (en) | 1996-08-23 | 2001-04-24 | The Weyerhauser Company | Lyocell fibers having enhanced CV properties |
| US6235392B1 (en) | 1996-08-23 | 2001-05-22 | Weyerhaeuser Company | Lyocell fibers and process for their preparation |
| US6773648B2 (en) | 1998-11-03 | 2004-08-10 | Weyerhaeuser Company | Meltblown process with mechanical attenuation |
| US6605648B1 (en) * | 1999-04-06 | 2003-08-12 | Phillips Plastics Corporation | Sinterable structures and method |
| EP1065301A1 (de) * | 1999-07-01 | 2001-01-03 | MELITTA HAUSHALTSPRODUKTE GmbH & Co. Kommanditgesellschaft | Reaktive, faserförmige Cellulosekoagulate |
| US6368703B1 (en) | 1999-08-17 | 2002-04-09 | Phillips Plastics Corporation | Supported porous materials |
| US6869445B1 (en) | 2000-05-04 | 2005-03-22 | Phillips Plastics Corp. | Packable ceramic beads for bone repair |
| DE10043297B4 (de) * | 2000-09-02 | 2005-12-08 | Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. | Verfahren zur Herstellung von Cellulosefasern und Cellulosefilamentgarnen |
| AT410319B (de) * | 2001-07-25 | 2003-03-25 | Chemiefaser Lenzing Ag | Celluloseschwamm und verfahren zu dessen herstellung |
| DE10200405A1 (de) * | 2002-01-08 | 2002-08-01 | Zimmer Ag | Spinnvorrichtung und -verfahren mit Kühlbeblasung |
| DE10200406A1 (de) * | 2002-01-08 | 2003-07-24 | Zimmer Ag | Spinnvorrichtung und -verfahren mit turbulenter Kühlbeblasung |
| DE10204381A1 (de) * | 2002-01-28 | 2003-08-07 | Zimmer Ag | Ergonomische Spinnanlage |
| DE10206089A1 (de) * | 2002-02-13 | 2002-08-14 | Zimmer Ag | Bersteinsatz |
| DE10213007A1 (de) * | 2002-03-22 | 2003-10-09 | Zimmer Ag | Verfahren und Vorrichtung zur Regelung des Raumklimas bei einem Spinnprozess |
| DE10223268B4 (de) * | 2002-05-24 | 2006-06-01 | Zimmer Ag | Benetzungseinrichtung und Spinnanlage mit Benetzungseinrichtung |
| DE10314878A1 (de) * | 2003-04-01 | 2004-10-28 | Zimmer Ag | Verfahren und Vorrichtung zur Herstellung nachverstreckter Cellulose-Spinnfäden |
| JP4234057B2 (ja) * | 2003-06-30 | 2009-03-04 | ヒョスング コーポレーション | 高均質セルロース溶液から製造したセルロースディップコード及びタイヤ |
| AT6807U1 (de) * | 2004-01-13 | 2004-04-26 | Chemiefaser Lenzing Ag | Cellulosische faser der gattung lyocell |
| DE102004024028B4 (de) * | 2004-05-13 | 2010-04-08 | Lenzing Ag | Lyocell-Verfahren und -Vorrichtung mit Presswasserrückführung |
| DE102004024029A1 (de) * | 2004-05-13 | 2005-12-08 | Zimmer Ag | Lyocell-Verfahren und -Vorrichtung mit Steuerung des Metallionen-Gehalts |
| DE102004024030A1 (de) | 2004-05-13 | 2005-12-08 | Zimmer Ag | Lyocell-Verfahren mit polymerisationsgradabhängiger Einstellung der Verarbeitungsdauer |
| KR100595751B1 (ko) * | 2004-11-11 | 2006-07-03 | 주식회사 효성 | 셀룰로오스 멀티 필라멘트의 제조방법 |
| KR100966111B1 (ko) | 2005-03-15 | 2010-06-28 | 주식회사 효성 | 셀룰로오스 멀티 필라멘트의 제조방법 |
| US8029259B2 (en) * | 2008-04-11 | 2011-10-04 | Reifenhauser Gmbh & Co. Kg Maschinenfabrik | Array of nozzles for extruding multiple cellulose fibers |
| US8303888B2 (en) * | 2008-04-11 | 2012-11-06 | Reifenhauser Gmbh & Co. Kg | Process of forming a non-woven cellulose web and a web produced by said process |
| US8029260B2 (en) * | 2008-04-11 | 2011-10-04 | Reifenhauser Gmbh & Co. Kg Maschinenfabrik | Apparatus for extruding cellulose fibers |
| EP2565303A1 (de) | 2011-09-02 | 2013-03-06 | Aurotec GmbH | Extrusionsverfahren |
| EP2565304A1 (de) | 2011-09-02 | 2013-03-06 | Aurotec GmbH | Extrusionsverfahren und -vorrichtung |
| EP2719801A1 (de) | 2012-10-10 | 2014-04-16 | Aurotec GmbH | Spinnbad und Verfahren zur Verfestigung eines Formkörpers |
| GB2511528A (en) | 2013-03-06 | 2014-09-10 | Speciality Fibres And Materials Ltd | Absorbent materials |
| CN107849100B (zh) | 2015-04-09 | 2022-02-08 | 丝芭博株式会社 | 极性溶剂溶液及其制造方法 |
| JP6856828B2 (ja) | 2015-04-09 | 2021-04-14 | Ｓｐｉｂｅｒ株式会社 | 極性溶媒溶液及びその製造方法 |
| KR102649060B1 (ko) * | 2017-10-06 | 2024-03-20 | 렌징 악티엔게젤샤프트 | 필라멘트의 압출 및 스펀본디드 패브릭의 제조를 위한 장치 |
| EP3674454A1 (en) | 2018-12-28 | 2020-07-01 | Lenzing Aktiengesellschaft | Cellulose filament process |
| CN111270322B (zh) * | 2020-02-15 | 2021-02-02 | 江苏标丽精密机械有限公司 | 一种用于化纤设备的水浴牵伸槽装置 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2341555A (en) * | 1939-01-05 | 1944-02-15 | Baker & Co Inc | Extrusion device |
| US3414645A (en) * | 1964-06-19 | 1968-12-03 | Monsanto Co | Process for spinning wholly aromatic polyamide fibers |
| US3767756A (en) * | 1972-06-30 | 1973-10-23 | Du Pont | Dry jet wet spinning process |
| 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 |
| 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 |
| ZA785535B (en) * | 1977-10-31 | 1979-09-26 | Akzona Inc | Process for surface treating cellulose products |
| US4261943A (en) * | 1979-07-02 | 1981-04-14 | Akzona Incorporated | Process for surface treating cellulose products |
| US4501886A (en) * | 1982-08-09 | 1985-02-26 | E. I. Du Pont De Nemours And Company | Cellulosic fibers from anisotropic solutions |
| JPS5930909A (ja) * | 1982-08-09 | 1984-02-18 | Asahi Chem Ind Co Ltd | 紡糸用口金 |
| DD218124A1 (de) * | 1983-08-16 | 1985-01-30 | Waschgeraetewerk Veb | Verfahren zur charakterisierung tensidhaltiger loesungen in waschgeraeten |
| SU1224362A1 (ru) * | 1984-06-29 | 1986-04-15 | Предприятие П/Я А-3844 | Способ получени целлюлозных волокон |
| JPS6414317A (en) * | 1987-06-18 | 1989-01-18 | Du Pont | Colored aramid fiber |
| FR2617511B1 (fr) * | 1987-07-01 | 1989-12-15 | Inst Textile De France | Procede de preparation d'une solution de filage de cellulose en presence d'oxyde d'amine tertiaire et d'additif |
| DE4012479A1 (de) * | 1990-04-19 | 1991-10-24 | Degussa | Titandioxidpresslinge, verfahren zu ihrer herstellung sowie ihre verwendung |
| ATA92690A (de) * | 1990-04-20 | 1992-06-15 | Chemiefaser Lenzing Ag | Verfahren zur herstellung einer loesung von cellulose in n-methylmorpholin-n-oxid und wasser |
-
1991
- 1991-01-09 AT AT0003291A patent/AT395863B/de not_active IP Right Cessation
- 1991-12-30 ZA ZA9110195A patent/ZA9110195B/xx unknown
- 1991-12-31 SI SI9112009A patent/SI9112009A/sl unknown
- 1991-12-31 YU YU200991A patent/YU47623B/sh unknown
-
1992
- 1992-01-06 SK SK22-92A patent/SK279852B6/sk unknown
- 1992-01-06 CZ CS9222A patent/CZ282528B6/cs not_active IP Right Cessation
- 1992-01-07 PH PH43737A patent/PH29990A/en unknown
- 1992-01-07 RO RO149074A patent/RO107701B1/ro unknown
- 1992-01-08 PL PL92293115A patent/PL169309B1/pl unknown
- 1992-01-08 RU SU925010647A patent/RU2072006C1/ru active
- 1992-01-08 US US07/817,937 patent/US5252284A/en not_active Expired - Fee Related
- 1992-01-08 BR BR929200043A patent/BR9200043A/pt not_active IP Right Cessation
- 1992-01-08 JP JP4001349A patent/JPH04308220A/ja active Pending
- 1992-01-08 CA CA002059043A patent/CA2059043A1/en not_active Abandoned
- 1992-01-08 NO NO920108A patent/NO303696B1/no unknown
- 1992-01-08 FI FI920072A patent/FI97155C/fi active
- 1992-01-08 HU HU9200064A patent/HU212340B/hu not_active IP Right Cessation
- 1992-01-09 MX MX9200080A patent/MX9200080A/es unknown
- 1992-01-09 DE DE59202175T patent/DE59202175D1/de not_active Expired - Fee Related
- 1992-01-09 TR TR00016/92A patent/TR27259A/xx unknown
- 1992-01-09 BG BG095746A patent/BG60111B2/bg unknown
- 1992-01-09 EP EP92890004A patent/EP0494852B1/de not_active Expired - Lifetime
- 1992-01-09 DK DK92890004.2T patent/DK0494852T3/da active
- 1992-01-09 ES ES92890004T patent/ES2072746T3/es not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| BR9200043A (pt) | 1992-09-08 |
| EP0494852A3 (en) | 1993-03-17 |
| HU9200064D0 (en) | 1992-04-28 |
| FI97155C (fi) | 1996-10-25 |
| CZ282528B6 (cs) | 1997-08-13 |
| NO303696B1 (no) | 1998-08-17 |
| DK0494852T3 (da) | 1995-07-10 |
| DE59202175D1 (de) | 1995-06-22 |
| US5252284A (en) | 1993-10-12 |
| EP0494852A2 (de) | 1992-07-15 |
| PL169309B1 (pl) | 1996-06-28 |
| FI920072A (fi) | 1992-07-10 |
| NO920108D0 (no) | 1992-01-08 |
| JPH04308220A (ja) | 1992-10-30 |
| TR27259A (tr) | 1994-12-22 |
| MX9200080A (es) | 1992-07-01 |
| RU2072006C1 (ru) | 1997-01-20 |
| BG60111B2 (bg) | 1993-10-29 |
| SI9112009A (en) | 1994-12-31 |
| HUT64110A (en) | 1993-11-29 |
| ATA3291A (de) | 1992-08-15 |
| YU47623B (sh) | 1995-10-24 |
| FI920072A0 (fi) | 1992-01-08 |
| CA2059043A1 (en) | 1992-07-10 |
| ES2072746T3 (es) | 1995-07-16 |
| HU212340B (en) | 1996-05-28 |
| ZA9110195B (en) | 1992-10-28 |
| RO107701B1 (ro) | 1993-12-30 |
| SK279852B6 (sk) | 1999-04-13 |
| PL293115A1 (en) | 1992-08-24 |
| FI97155B (fi) | 1996-07-15 |
| CS2292A3 (en) | 1992-08-12 |
| YU200991A (sh) | 1994-01-20 |
| NO920108L (no) | 1992-07-10 |
| PH29990A (en) | 1996-10-29 |
| AT395863B (de) | 1993-03-25 |
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