EP3574137A1 - Spinnlösung enthaltend cellulosecarbamat und cellulosexanthogenat, verfahren zur herstellung von formkörpern und entsprechend hergestellte formkörper - Google Patents
Spinnlösung enthaltend cellulosecarbamat und cellulosexanthogenat, verfahren zur herstellung von formkörpern und entsprechend hergestellte formkörperInfo
- Publication number
- EP3574137A1 EP3574137A1 EP17704403.9A EP17704403A EP3574137A1 EP 3574137 A1 EP3574137 A1 EP 3574137A1 EP 17704403 A EP17704403 A EP 17704403A EP 3574137 A1 EP3574137 A1 EP 3574137A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cellulose
- spinning solution
- carbamate
- spinning
- filaments
- 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.)
- Pending
Links
- 229920002678 cellulose Polymers 0.000 title claims abstract description 79
- 239000001913 cellulose Substances 0.000 title claims abstract description 79
- 238000009987 spinning Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 37
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 title claims abstract description 33
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 239000012991 xanthate Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title abstract description 9
- 239000002904 solvent Substances 0.000 claims abstract description 20
- 238000007493 shaping process Methods 0.000 claims abstract description 10
- 239000000243 solution Substances 0.000 claims description 55
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000003513 alkali Substances 0.000 claims description 11
- 230000015271 coagulation Effects 0.000 claims description 9
- 238000005345 coagulation Methods 0.000 claims description 9
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 8
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 7
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 7
- 235000011152 sodium sulphate Nutrition 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 3
- 150000007522 mineralic acids Chemical class 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 2
- 150000005215 alkyl ethers Chemical class 0.000 claims description 2
- 239000011324 bead Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 claims description 2
- -1 polyoxyethylene Polymers 0.000 claims description 2
- 150000003856 quaternary ammonium compounds Chemical class 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000006467 substitution reaction Methods 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 150000007513 acids Chemical class 0.000 claims 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 claims 1
- 235000011187 glycerol Nutrition 0.000 claims 1
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 17
- 229920000297 Rayon Polymers 0.000 description 17
- 239000000835 fiber Substances 0.000 description 13
- 235000011121 sodium hydroxide Nutrition 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 239000012153 distilled water Substances 0.000 description 5
- 229920002994 synthetic fiber Polymers 0.000 description 5
- 239000012209 synthetic fiber Substances 0.000 description 5
- 229920000433 Lyocell Polymers 0.000 description 3
- 238000001212 derivatisation Methods 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000004627 regenerated cellulose Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 101710178035 Chorismate synthase 2 Proteins 0.000 description 1
- 101710152694 Cysteine synthase 2 Proteins 0.000 description 1
- 229920000875 Dissolving pulp Polymers 0.000 description 1
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 231100001231 less toxic Toxicity 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011020 pilot scale process Methods 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 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
- D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
- D01F2/08—Composition of the spinning solution or the bath
-
- 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
- C08L1/08—Cellulose derivatives
-
- 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
- C08L1/08—Cellulose derivatives
- C08L1/22—Cellulose xanthate
-
- 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
- D01F2/24—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives
Definitions
- the present invention relates to a spinning solution which contains or consists of cellulose carbamate and cellulose xanthogenate and also a suitable solvent.
- the cellulose carbamate and the cellulose xanthate are dissolved in the solvent.
- the present invention relates to the production of a shaped body, in particular a filament by means of a shaping process, in particular a spinning process of the aforementioned spinning solution.
- the invention also relates to a correspondingly produced shaped body, in particular a filament, which contains or consists of cellulose carbamate and cellulose xanthogenate.
- Synthetic fibers from regenerated cellulose are currently produced at a production volume of about 5 million t / a, with more than 90% being produced by the viscose process.
- CS 2 carbon disulfide
- the molded bodies produced, in particular Spun fibers produced therefrom have a different spectrum of the textile-physical characteristics and, in particular, exhibit a high tendency to fibrillate due to the high orientation of the amorphous regions of the semicrystalline cellulose polymer.
- Synthetic fibers produced by the viscose process thus differ from synthetic fibers produced after the carbamate process in terms of their structure and their superior mechanical properties.
- the object of the present invention to provide a spinning solution, a process for producing a shaped body, in particular staple fibers and a shaped body, in particular staple fibers, wherein the physical-chemical properties of the produced Form body not at all or only slightly different from the physico-chemical properties of moldings, which were produced by the viscose process.
- the spinning solution according to the invention or the production process should make it possible to work for the viscose process while minimizing carbon disulfide in the comparison.
- it is an object of the present invention to provide new structure-property relationships in the moldings produced enable.
- the spinning solution according to the invention according to claim 1 contains cellulose carbamate and cellulose xanthate, which are dissolved in a suitable solvent.
- solvent in this case comprises a single suitable solvent and mixtures of a number of suitable solvents
- the spinning solution may alternatively also be formed from the abovementioned substances, ie cellulose carbamate, cellulose xanthate and solvent, so that, if appropriate, no further additives are present.
- the spinning solution according to the invention is in particular free of externally added carbon disulfide.
- the particular advantage of the spinning solution according to the invention is that it has a shaping process, for example, a spinning process can be subjected, while maintaining the xanthate polyelectrolyte structure of the cellulosic material to be formed during the spinning process.
- This makes it possible to influence the diffusion processes and the coagulation rate by salts contained in the spinning bath during the regeneration of the dissolved cellulosic polymers.
- structural parameters such as crystallite size and orientation, degree of crystallinity and overall orientation of the cellulosic polymer chains can be varied over a larger range than is possible, for example, in the lyocell or carbamate process alone (compare characteristic values for the elongation Ex. 1 and Ex. 3) ,
- the spinning solution according to the invention can be prepared by dissolving cellulose carbamate and cellulose xanthogenate in the solvent by stirring or kneading.
- the dissolution process is preferably carried out at temperatures below 10 ° C, more preferably below 0 ° C.
- a preferred embodiment provides that the cellulose carbamate and / or the cellulose xanthate a DP CU oxam (determined according to SCAN-CM 15:99) of 150 to 750, preferably from 250 to 550.
- the cellulose has a degree of substitution of carbamate (DP rbamat Ca) of 0.1 to 1, preferably from 0.2 to 0.6.
- the cellulose xanthate can be prepared prior to introduction into the spinning solution by reaction of cellulose with CS 2 analogously to the viscose process.
- the cellulose xanthate preferably has a fresh y value (determined by Fock, Svensk Papperstidn, 60 (1957), 911-912) of 100 to 30, preferably 60 to 40.
- the cellulosic solids content ie the total weight of cellulose carbamate and cellulose xanthogenate of the spinning solution of 4 to 15 wt .-%, preferably from 6 to 10 wt .-%.
- the spinning solution preferably has a content of cellulose carbamate of 1 to 15 wt .-%, preferably from 2 to 8 wt .-% and / or cellulose xanthate from 1 to 15 wt .-%, preferably from 2 to 8 wt .-% to.
- the weight ratio of cellulose carbamate to cellulose xanthogenate is from 5:95 to 95: 5, preferably from 60:40 to 85:15, particularly preferably from 65:35 to 70:30.
- the solvent is selected from the group consisting of
- Alkali solutions in particular sodium hydroxide solution or potassium hydroxide solution, wherein preferably the concentration of alkali in the alkali metal hydroxide solution is 4 to 12% by weight, preferably 5 to 10% by weight, particularly preferably 6 to 9% by weight.
- spinning aids in particular inorganic spinning aids, such as, for example, can be used.
- the present invention also relates to processes for producing a shaped body, in particular a filament, a bead, a sponge, a film of a spinning solution according to the invention, wherein the spinning solution by means of a shaping step in a molded body, transferred and during and / or after the forming Step, the solvent is removed from the molding.
- the process according to the present invention relates to the production of filaments, in which case a spinning solution according to the invention is spun into filaments by means of a spinneret and the filaments produced are introduced into a coagulation bath.
- the coagulation bath preferably contains water, and dissolved therein at least one component selected from the group consisting of inorganic acids, such as sulfuric acid; Salts, such as sodium sulfate; as well as organic liquids, for example glycerol or is formed therefrom.
- the spinning solution is freshly prepared in the solvent before the shaping step, in particular spinning by dissolving the cellulose carbamate and the cellulose xanthate and then ripened, the tire preferably over a period of 1 to 72 hours, more preferably from 5 to 36 hours, more preferably 12 to 24 hours and / or at temperatures of the spinning solution of -10 to +50 ° C, preferably 0 to 30 ° C, particularly preferably 15 to 25 ° C is performed.
- the coagulation bath to a temperature of 10 to 90 ° C, preferably 20 to 70 ° C, particularly preferably 30 to 50 ° C tempered.
- the filaments After removal from the coagulation bath, the filaments can be fed to a stretching bath and stretched there, preferably with a stretching factor of 1.1 to 4, in particular 1.5 to 2.5.
- the aforementioned stretching bath in this case is preferably an aqueous solution of an inorganic acid, which in particular includes sulfuric acid and / or at temperatures of 50 to 99 ° C, preferably from 60 to 90 ° C, more preferably 75 to 85 ° C tempered.
- an inorganic acid which in particular includes sulfuric acid and / or at temperatures of 50 to 99 ° C, preferably from 60 to 90 ° C, more preferably 75 to 85 ° C tempered.
- these are preferably drawn off from the spinneret with a nozzle delay of 0.3 to 2.0, preferably 0.5 to 1.5, in particular 0.6 to 0.8.
- the resulting shaped articles, in particular filaments, are preferably finally washed, in particular with water or, in particular, subsequently dried.
- the invention additionally relates to a shaped body, in particular filament, pearl, sponge, foil, containing or consisting of cellulose carbamate and cellulose xanthogenate.
- the shaped body described above is preferably produced or producible by a process according to the invention.
- the present invention will be further illustrated by the following examples, without limiting the invention thereto.
- the measured values determined in the examples became as follows
- the spinning solution thus produced was at a temperature of +5 ° C by means of a spinning pump to the spinneret (300 hole, 70 ⁇ ), which in a 40 ° C tempered, aqueous spinning bath of 80 g / l sulfuric acid and 240 g / l sodium sulfate, promoted ,
- the coagulated filaments were drawn off by means of a nozzle delay of 0.7 and further in a stretching bath (stretching factor 1.15, 80 ° C, 20 g / l H 2 S0 4 ) and then the laundry (60 ° C, distilled water) supplied before they were dried isometrically at 80 ° C using dry palettes and finally wound up as filament yarn.
- the filaments thus produced had a tensile strength of 17 cN / tex, an elongation of 6% and an elastic modulus of 1020 cN / tex.
- the spinning solution thus produced was fed to the spinning nozzle at a spinning-y value of 38 at a temperature of +10 ° C. by means of a spinning pump (300 hole,
- the filaments thus produced had a tensile strength of 17 cN / tex, an elongation of 18% and an E modulus of 780 cN / tex.
- Na cellulose xanthate (CX, DP CuO x: 340, fresh y value: 52.4) was dissolved in caustic at 5 ° C to realize cellulose content of 8.8% by weight and an alkali content of 7.0% by weight , Further, cellulose carbamate (CC, DPcuox: 258, N content 2.2%) was dissolved in a 7 wt% sodium hydroxide aqueous solution in the cold at -4 ° C with stirring within 90 minutes to give a CC concentration of 9.5 % to realize.
- the thus produced low-viscosity spinning solution was after maturity (20h at 22 ° C) at a temperature of +5 ° C by means of a spinning pump to the spinneret
- the filaments thus produced had a tenacity of 17 cN / tex, an elongation of 12% and a modulus of 970 cN / tex.
- Example 3 Analogously to Example 3, to the solution of cellulose carbamate in 7% by weight of alkali, the solution of CX was added with stirring and a ratio of CC: CX of 33:67 was set, the final resulting cellulose concentration being 8.5% by weight and that of the alkali 7% by weight.
- the low-viscosity spinning solution was after maturity (20h at 22 ° C) at a temperature of +5 ° C by means of a spinning pump to the spinneret (300 holes, 70 ⁇ ), which in a 40 ° C tempered aqueous spinning bath of 80 g / l
- the filaments thus produced had a tensile strength of 17 cN / tex, an elongation of 17% and a modulus of 890 cN / tex.
- Example 5 Analogously to Example 3, to the solution of cellulose carbamate in 7% by weight
- the filaments thus produced had a tensile strength of 32 cN / tex, an elongation of 6% and a modulus of 1200 cN / tex.
- Example 4 The procedure was as in Example 4 and made of the spinning solution at -2 ° C, a mixture with cotton fibers and sodium carbonate. 0.5 parts were added per 1 part of cellulose in the form of the dissolved cellulose derivatives
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Artificial Filaments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2017/051419 WO2018137757A1 (de) | 2017-01-24 | 2017-01-24 | Spinnlösung enthaltend cellulosecarbamat und cellulosexanthogenat, verfahren zur herstellung von formkörpern und entsprechend hergestellte formkörper |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3574137A1 true EP3574137A1 (de) | 2019-12-04 |
Family
ID=58016667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17704403.9A Pending EP3574137A1 (de) | 2017-01-24 | 2017-01-24 | Spinnlösung enthaltend cellulosecarbamat und cellulosexanthogenat, verfahren zur herstellung von formkörpern und entsprechend hergestellte formkörper |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3574137A1 (de) |
WO (1) | WO2018137757A1 (de) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2805119A (en) * | 1954-01-12 | 1957-09-03 | Schweizerische Viscose | Alkali cellulose xanthates |
PL168080B1 (pl) * | 1992-01-20 | 1995-12-30 | Inst Wlokien Chem | Modyfikowane włókna wiskozowe o podwyższonej sorpcji wilgoci i sposób wytwarzania modyfikowanych włókien wiskozowych o podwyższonej sorpcji wilgoci |
ATA123795A (de) * | 1995-07-20 | 1997-02-15 | Chemiefaser Lenzing Ag | Verfahren zur herstellung von modifizierten viskosefasern und modifizierte viskosefaser |
PL196594B1 (pl) | 2000-06-12 | 2008-01-31 | Inst Biopolimerow Wlokien Chem | Sposób wytwarzania włókien, folii i innych produktów z modyfikowanej, rozpuszczalnej celulozy |
CA2754342A1 (en) | 2010-10-08 | 2012-04-08 | F. Hoffman-La Roche Ag | Methods of array data wave correction |
US10240259B2 (en) | 2013-04-04 | 2019-03-26 | Aalto University Foundation Sr | Process for the production of shaped cellulose articles |
AT514476A1 (de) * | 2013-06-17 | 2015-01-15 | Lenzing Akiengesellschaft | Polysaccharidfaser und Verfahren zu ihrer Herstellung |
-
2017
- 2017-01-24 WO PCT/EP2017/051419 patent/WO2018137757A1/de unknown
- 2017-01-24 EP EP17704403.9A patent/EP3574137A1/de active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2018137757A1 (de) | 2018-08-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3010941B1 (de) | Verfahren zur herstellung von saccharidfaser | |
EP3011085B1 (de) | Polysaccharidfaser und verfahren zu ihrer herstellung | |
EP0811031B1 (de) | Verfahren zur herstellung eines celluloseschwamms | |
DE1108849B (de) | Verfahren zur Herstellung von Gebilden aus regenerierter Cellulose | |
AT400850B (de) | Verfahren zur herstellung von regenerierten zellulosefasern | |
DE2851273A1 (de) | Nasspinnverfahren zur herstellung von hochverstreckten acrylnitril-polymerfasern | |
DE2621166C2 (de) | Verfahren zur Herstellung von Produkten aus regenerierter Zellulose | |
EP2110468B1 (de) | Cellulosecarbamat-Spinnlösung, Cellulosecarbamatfaser sowie Verfahren zu deren Herstellung und Verwendungszwecke | |
WO1996007779A1 (de) | Verfahren zur herstellung cellulosischer formkörper | |
EP3574137A1 (de) | Spinnlösung enthaltend cellulosecarbamat und cellulosexanthogenat, verfahren zur herstellung von formkörpern und entsprechend hergestellte formkörper | |
DE19910105C2 (de) | Verfahren zur Herstellung einer porösen Cellulose-Matrix | |
AT405949B (de) | Regenerierter cellulosischer formkörper | |
WO1997004148A1 (de) | Cellulosefaser | |
DE1469108A1 (de) | Verfahren zum Herstellen viskoseregenerierter Zellulosefasern | |
DE1469108C (de) | Verfahren zum Herstellen regenerierter Zellulosefasern | |
DE2921314A1 (de) | Verfahren zur herstellung von gekraeuselten fasern aus regenerierter cellulose mit hohem nassmodul | |
DE10009471A1 (de) | Verfahren zur Herstellung einer Lösung erhöhter thermischer Stabilität von Cellulose in wässrigem Aminoxid | |
Sengupta | Rayon fibres | |
DE1814565C3 (de) | Fäden aus regenerierter Cellulose und Verfahren zu ihrer Herstellung | |
DE1937985C (de) | Verfahren zur Herstellung von PoIyvinylalkoholfäden | |
DE1494745A1 (de) | Verfahren zur Herstellung von Faeden oder Fasern aus Viscose | |
DE1920169C (de) | Cellulose Formkörper mit verbesserten flammverzogernden Eigenschaften | |
DE3045405A1 (de) | Verfahren zur herstellung von viskose und zum spinnen der dadurch gewonnenen viskose | |
DE1946998A1 (de) | Verfahren zur Herstellung von Faeden | |
DE1469108B (de) | Verfahren zum Herstellen regenerierter Zellulosefasern |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20190814 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20230323 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20231219 |