EP2831318A1 - Lignocellulose-spinnlösung, lignocellulose-regeneratfaser sowie verfahren zu deren herstellung - Google Patents
Lignocellulose-spinnlösung, lignocellulose-regeneratfaser sowie verfahren zu deren herstellungInfo
- Publication number
- EP2831318A1 EP2831318A1 EP13711697.6A EP13711697A EP2831318A1 EP 2831318 A1 EP2831318 A1 EP 2831318A1 EP 13711697 A EP13711697 A EP 13711697A EP 2831318 A1 EP2831318 A1 EP 2831318A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spinning solution
- lignocellulose
- weight
- thread
- spinning
- 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.)
- Withdrawn
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
- D01F2/02—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases or salts
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
- C08B1/003—Preparation of cellulose solutions, i.e. dopes, with different possible solvents, e.g. ionic liquids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/02—Cellulose; Modified cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
- C08L5/14—Hemicellulose; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/005—Lignin
-
- 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
- D01D1/00—Treatment of filament-forming or like material
- D01D1/02—Preparation of spinning solutions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Definitions
- Lignocellulose spinning solution Lignocellulose spinning solution, lignocellulosic regenerated fiber and process for its preparation
- the invention relates to a lignocellulose spinning solution, regenerated fibers of lignocellulose and a process for their preparation.
- lignocellulose can be processed for the first time without prior chemical separation process for the separation of cellulose impurities such as lignin and hemiceilulose or without thermomechanical pretreatment of the raw material into fibers.
- the present invention is the use of specially adapted ionic liquids of the imidazoi type as a solvent for lignocellulose of various origins. From the almost homogeneous spinning solutions prepared therefrom, it is possible with commercial spinning apparatus to produce stable filaments with comparable mechanical parameters as obtainable in commercial cellulose spinning processes.
- chloride-based IL such as l-8utyl-3-methyl-imidazoliumchlorid (BMIMCI) or lA! Lyl-3-methylimidazoliumch! Orid (AMiMCI) obtained (WO 2005/017001 AI, US 2008/0188636 AI), which increase the cost of corresponding large-scale facilities enormously due to their corrosivity (HCl).
- the alkaline extraction leads to a partial separation of the lignocellulose constituents.
- the Sun et al. Solution conditions solution of the lignocellulose at a temperature of 175 ° C
- a strong depolymerization of hemicelluiosis, lignin and cellulose which is reflected in the achieved mechanical properties of the monofilament (maximum tear strength of 17 cN / tex).
- Spinning solution e.g., tear strength of fibers. Furthermore, long dissolution times and low levels of lignocellulose in the dope solution are not economical. The problems of the prior art are solved by the
- a lignocellulosic spinning solution according to claim 1 the process for producing a spinning solution having the features of claim 14, the air-gap spinning process having the features of claim 15, the regenerated fiber according to claim 26 and the use of the regenerated fiber according to claim 29.
- the further dependent Claims show advantageous developments.
- a lignocellulosic spinning solution which contains a solution of lignocellulose in at least one ionic liquid, the at least one ionic liquid consisting of an 1-alkyl-3-methylimidazolium cation and a substantially hydrophobic carboxylate anion and the spinning solution is characterized in that lignocellulose is contained in a concentration of at least 10 wt .-% and the spinning solution has a zero shear viscosity, measured at 80 ° C, of ⁇ 30000 Pas.
- the spinning solution according to the invention is advantageous over the prior art in the following respects:
- the spinning solution contains lignocellulose in a concentration of at least 10% by weight in dissolved form;
- the spinning solution contains lignocellulose with a low level of depolymerized polymeric components and thus has excellent spinning properties;
- the spinning solution can be formed into filaments with a high content of lignin (5 to 30% by weight) and hemicelluloses (5 to 30% by weight);
- the spinning solution can be produced without restriction on an industrial scale.
- the lignocellulose is wood pulp, i. for the extraction of lignocellulose
- the spinning solution can be prepared by directly dissolving wood raw material without a pre-peeled method. This will be the
- Wood raw materials based on all plants may be preferred
- the spinning solution can have a zero shear viscosity, measured at 80 ° C., of 500 Pas to 3000 Pas, preferably a zero shear viscosity of 1000 Pas to 2500 Pas, exhibit.
- a zero shear viscosity in this range has been found to be particularly advantageous for the production of regenerated fibers.
- the carboxylate anion has more carbon atoms than atoms of group 15, 16 and / or 17 of the periodic table (examples of group 15: N and P; examples of group 16: 0 and S. Examples of group 17: F, Cl, Br and I) or consists thereof.
- the carboxylate anion contains at least one carboxyl group ⁇ e.g. only one carboxyl group) no further hydrophilic group.
- the carboxylate anion contains at least 3 C atoms, preferably at least 4 C atoms.
- the carboxylate anion may be further characterized by having a) at least one double bond, especially in the case of a C3, C4 and / or C5 carboxylate anion; b) is at least partially branched, in particular in the case of a C4, C5 and / or C6 carboxylate anion; and / or c) is cyclized at least in certain areas, in particular in the case of a C6 or C7 carboxylate anion.
- the carboxylate anion may have or consist of 3 to 18, preferably 3 to 12, particularly preferably 4 to 7, carbon atoms.
- the carboxylate anion is selected from the group consisting of 2,2-dimethyl-propanate anion, 2-butenate anion and
- an ionic liquid (IL) consisting of an 1-alkyl-3-methyl-imidazolium cation and a substantially hydrophobic carboxylate anion, especially an anion of the above-mentioned called preferred embodiments, lignocellulose or even wood pulp can solve in relation to the prior art higher concentration and at a predetermined temperature in a shorter time. It has also been found that in the case of C3-C7 carboxylate anions branching, Zyküstechnik and / or the presence of a double bond for the solution of lignocellulose (eg in the form of wood pulp ⁇ is advantageous (low solution temperature and solution time).
- the spinning solution according to the invention is prepared by the lignocellulose with water and / or an aliphatic Alkoho! mixed and in the ionic liquid at a temperature ⁇ 150 ° C, preferably ⁇ 140 ° C, more preferably ⁇ 130 ° C, is dissolved. It is further preferred that the spinning solution is prepared by the lignocellulose within a time of ⁇ 10 h, preferably ⁇ 7 h, more preferably ⁇ 5 h with at least partially-wise separation of the water and / or aliphatic alcohol is dissolved.
- the preparation of the lignocellulose spinning solution can be carried out in a stirring unit or kneading unit.
- the spinning solution according to the invention preferably contains
- lignin in a proportion of at least 5% by weight, more preferably 5 to 35% by weight;
- Hemice! lulose in a proportion of at least 5% by weight, particularly preferably from 5 to 35% by weight; and or
- the spinning solution preferably contains from 10 to 35% by weight, preferably from 10 to 30% by weight, of lignocellulose.
- the alkyl radical at position 1 in the 1-alkyl-3-alkylimidazolium cation may be a substituted or unsubstituted C 1 -C 6 alkyl radical or an aryl radical, preferably selected from the group consisting of Methyl, ethyl, propyl, butyf, pentyl, hexyl, AI- lyl, benzyl, imidazolyl, methoxymetyl, methoxyethy! and ethoxyethyl, most preferably Ethy! and butyl.
- the spinning solution may contain or consist of at least one plant, preferably at least one annual or at least one tree, more preferably at least one plant selected from the group consisting of wheat, rye, maize, hemp, flax, poplar and / or beech.
- the lignoeclulose may be wood pulp, i.
- native lignocellulose is dissolved in the spinning solution.
- the ligno-cellulose has not been chemically treated (e.g., by the Kraft process or the sulfite process) prior to dissolution in the ionic liquid, and thus has not been chemically modified. It can be used, for example, lignocellulose, which consists of ground wheat straw.
- the lignocellulose may be dried in a spin bath prior to solution as this further improves the solubility of the lignocellulose in the ionic liquid.
- the spinning solution may thus contain ⁇ 5% by volume, preferably ⁇ 2% by volume, particularly preferably ⁇ 1% by volume, of water.
- the spinning solution is preferably a homogeneous particle-free spinning solution. This can be prepared, for example, by filtering the spinning solution through a filtration device. A homogeneous particle-free spinning solution has an advantageous effect on the properties of a regenerated fiber obtained from the spinning solution.
- the process of the invention for producing a regenerated fiber is an air-gap spinning process.
- the viscous solution of solution is forced through the holes of a spinneret and stretched (extruded) fiber in the air gap.
- the spinning solution may be based on a temperature of 60 to 150 ° C before ⁇ be adjusted Trains t 80 to 130 "C, particularly preferably 90 to 120 * C.
- the spinning solution can be pressed through an opening of the at least one spinneret, which has a diameter of more than 100 ⁇ , preferably a diameter of 100 ⁇ to 600 ⁇ having.
- the at least one thread can be stretched in at least one air gap with a length of at least 20 mm, preferably with a length of 20 to 500 mm.
- the at least one thread can according to the invention with a delay ratio of 2 to 10, preferably 3 to 9, particularly preferably 4 to 8, are stretched.
- the at least one (extruded) thread may be solidified in at least one coagulation bath containing or consisting of a liquid selected from the group consisting of water, polymer solvent, ionic liquid, and aliphatic Cq alcohol.
- the precipitation bath preferably contains water or a mixture of one
- the at least one thread can be dried in a further step, preferably at a temperature of at least 80 ° C., particularly preferably at a temperature of at least 100 ° C.
- the at least one thread is equipped with at least one spinning oil. This is preferably done after solidification of the at least one thread in at least one precipitation bath and / or after the drying of the at least one thread.
- the spinning oil it is to be understood that spinning oil is applied at least in regions to the surface of the at least one thread. As a result, static charges and "sticking together" of the threads can be reduced, which has a particularly advantageous effect on downstream textile production processes.
- the threads or fibers can be washed, finished, dried and then wound up as filament.
- multiple filaments or fibers can be formed into filaments and / or wound up.
- the spinning solution used in the process may have a zero shear viscosity, measured at 80 ° C, of 500 Pas to 3000 Pas, preferably 1000 Pas to 2500 Pas.
- step a homogenization of the spinning solution and removal of the spinning solution from particles are carried out. This can e.g. by filtration of the spinning solution.
- Lignocellulosic dope used in the process.
- regeneratoratrice invention is inexpensive to produce, as in the
- Lignocellulose spinning solution can be dissolved as lignocellulose native wood raw material i. costly pretreatment of the lignocellulose (e.g., by chemical methods) is not required.
- the regenerated fiber according to the invention preferably has a strength measured according to DIN 53834 of at least 20 cN / tex, preferably a strength from 20 cN / tex to 50 cN / tex, up. Furthermore, the regenerated fiber according to the invention can be distinguished by an E-modulus of at least 1000 cN / tex, preferably an E-modulus of 1000 cN / tex to 2500 cN / tex.
- the regenerated fiber may contain a content
- hemicellulose of at least 5% by weight, preferably from 5 to 35% by weight;
- the regenerated fiber according to the invention can be used for example as a textile fiber and / or as a reinforcing fiber for composites with thermoplastic materials.
- Example 1 Preparation of the ionic liquids
- 7706 g of 27.8% strength methanolic solution of 1-butyl-3-methylimidazoliummethylcarbonate (10 mol) with 1282 g of cyclohexanecarboxylic acid (10 mol) are heated to 50 ° C. with stirring for 2 h. Subsequently, the Withdrawn methanol on a rotary evaporator. After further drying at 400 ° C in vacuo over P 2 0 5 , about 2700 g of 1-butyl-3-methyl-imidazolium-cyciohexylcarboxyiat be obtained.
- the IL has a melting point of about 35 ° C at a water content ⁇ 0.5% (Karl Fischer titration) and a methanol content of about 1% 1 H NMR).
- Example 2 Wheat lignocellulose dissolved in 1-butyl-3-methylimidazolium ccylohexylcarboxylate
- the filaments had a strength of 27 cN / tex, an elongation of 2.9%, and an E modulus of 1800 cN / tex.
- Example 3 Hemp straw lignocellulose dissolved in 1-butyl-3-methylimidazolium ccylohexylcarboxylate
- the filaments had a tenacity of 22 cN / tex, an elongation of 4.3%, and an E-modulus of 1351 cN / tex.
- the filaments had a tenacity of 36 cN / tex, 2100 cN / tex.
- Example 5 Wheat lignocellulose dissolved in 1-ethyl-methylimidazolium acetate (comparative example)
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Textile Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Mechanical Engineering (AREA)
- Artificial Filaments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012006501A DE102012006501A1 (de) | 2012-03-29 | 2012-03-29 | Lignocellulose-Spinnlösung, Lignocellulose-Regeneratfaser sowie Verfahren zu deren Herstellung |
PCT/EP2013/056267 WO2013144082A1 (de) | 2012-03-29 | 2013-03-25 | Lignocellulose-spinnlösung, lignocellulose-regeneratfaser sowie verfahren zu deren herstellung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2831318A1 true EP2831318A1 (de) | 2015-02-04 |
Family
ID=47988996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13711697.6A Withdrawn EP2831318A1 (de) | 2012-03-29 | 2013-03-25 | Lignocellulose-spinnlösung, lignocellulose-regeneratfaser sowie verfahren zu deren herstellung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2831318A1 (de) |
JP (1) | JP6195896B2 (de) |
DE (1) | DE102012006501A1 (de) |
WO (1) | WO2013144082A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2016333829B2 (en) * | 2015-10-08 | 2020-06-25 | Stora Enso Oyj | A process for the manufacture of a precursor yarn |
CN107313115A (zh) * | 2017-06-26 | 2017-11-03 | 苏州华良化纤纺织有限公司 | 一种垂感好的布料制作方法 |
EP3536829A1 (de) * | 2018-03-06 | 2019-09-11 | Lenzing Aktiengesellschaft | Lyocellfaser mit viskoseartigen eigenschaften |
CN112717472B (zh) * | 2021-02-23 | 2022-07-22 | 江苏科技大学 | 一种桑纤维复合立体油水分离膜的制备方法 |
CN114086415B (zh) * | 2021-11-25 | 2023-08-18 | 黑龙江省科学院高技术研究院 | 一种大麻杆芯中木质素和纤维素的分离方法 |
GB202208067D0 (en) * | 2022-05-31 | 2022-07-13 | Imperial College Innovations Ltd | Method for making fibres |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10062083B4 (de) * | 2000-12-13 | 2008-04-10 | Ostthüringische Materialprüfgesellschaft Für Textil Und Kunststoffe Mbh | Verfahren zur Herstellung von Celluloseendlosformkörpern |
FI115835B (fi) | 2003-08-15 | 2005-07-29 | Kemira Oyj | Liuotusmenetelmä |
DE102004031025B3 (de) | 2004-06-26 | 2005-12-29 | Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. | Verfahren und Vorrichtung zur Herstellung von Formkörpern aus Cellulose |
US8163215B2 (en) * | 2005-12-23 | 2012-04-24 | Basf Aktiengesellschaft | Method of forming regenerated carbohydrates with solvent systems based on molten ionic liquids |
AU2007230908A1 (en) | 2006-03-25 | 2007-10-04 | Altervia Energy, Llc | Biomass fuel synthesis methods for incresed energy efficiency |
US8044120B2 (en) | 2006-10-13 | 2011-10-25 | Basf Aktiengesellschaft | Ionic liquids for solubilizing polymers |
US20080188636A1 (en) | 2007-02-06 | 2008-08-07 | North Carolina State University | Polymer derivatives and composites from the dissolution of lignocellulosics in ionic liquids |
US20080241536A1 (en) * | 2007-03-29 | 2008-10-02 | Weyerhaeuser Co. | Method for processing cellulose in ionic liquids and fibers therefrom |
WO2009040242A1 (de) | 2007-09-21 | 2009-04-02 | Basf Se | Verfahren zur herstellung von imidazoliumsalzen |
US20090084509A1 (en) * | 2007-09-28 | 2009-04-02 | Weyerhaeuser Company | Dissolution of Cellulose in Mixed Solvent Systems |
US8668807B2 (en) * | 2008-02-19 | 2014-03-11 | Board Of Trustees Of The University Of Alabama | Ionic liquid systems for the processing of biomass, their components and/or derivatives, and mixtures thereof |
US20120216705A1 (en) * | 2009-11-04 | 2012-08-30 | The Board Of Trustees Of The University Of Alabama | Methods for dissolving polymers using mixtures of different ionic liquids and compositions comprising the mixtures |
EP2524980A1 (de) * | 2011-05-18 | 2012-11-21 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Herstellung ligninhaltiger Precursorfasern sowie Carbonfasern |
-
2012
- 2012-03-29 DE DE102012006501A patent/DE102012006501A1/de not_active Withdrawn
-
2013
- 2013-03-25 JP JP2015502273A patent/JP6195896B2/ja not_active Expired - Fee Related
- 2013-03-25 EP EP13711697.6A patent/EP2831318A1/de not_active Withdrawn
- 2013-03-25 WO PCT/EP2013/056267 patent/WO2013144082A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2013144082A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2015514164A (ja) | 2015-05-18 |
JP6195896B2 (ja) | 2017-09-13 |
WO2013144082A1 (de) | 2013-10-03 |
DE102012006501A1 (de) | 2013-10-02 |
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