DD238982A5 - Zyklisches verfahren zur herstellung alkalischer loesungen von cellulosecarbamat - Google Patents
Zyklisches verfahren zur herstellung alkalischer loesungen von cellulosecarbamat Download PDFInfo
- Publication number
- DD238982A5 DD238982A5 DD85281019A DD28101985A DD238982A5 DD 238982 A5 DD238982 A5 DD 238982A5 DD 85281019 A DD85281019 A DD 85281019A DD 28101985 A DD28101985 A DD 28101985A DD 238982 A5 DD238982 A5 DD 238982A5
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- solution
- cellulose carbamate
- sodium hydroxide
- precipitation
- carbamate
- Prior art date
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
- D01F2/24—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
- C08B15/05—Derivatives containing elements other than carbon, hydrogen, oxygen, halogens or sulfur
- C08B15/06—Derivatives containing elements other than carbon, hydrogen, oxygen, halogens or sulfur containing nitrogen, e.g. carbamates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B3/00—Preparation of cellulose esters of organic acids
- C08B3/14—Preparation of cellulose esters of organic acids in which the organic acid residue contains substituents, e.g. NH2, Cl
-
- 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
- Y02P20/582—Recycling of unreacted starting or intermediate materials
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Textile Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Artificial Filaments (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI843814A FI69853C (fi) | 1984-09-27 | 1984-09-27 | Cykliskt foerfarande foer framstaellning av en alkaliloesning av cellulosakarbamat foer utfaellning av karbamatet och foeraotervinning av kemikalierna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD238982A5 true DD238982A5 (de) | 1986-09-10 |
Family
ID=8519662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD85281019A DD238982A5 (de) | 1984-09-27 | 1985-09-25 | Zyklisches verfahren zur herstellung alkalischer loesungen von cellulosecarbamat |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US4639515A (fi) |
| JP (1) | JPS6185452A (fi) |
| AT (1) | AT389327B (fi) |
| BR (1) | BR8504752A (fi) |
| CA (1) | CA1236095A (fi) |
| CS (1) | CS673185A2 (fi) |
| DD (1) | DD238982A5 (fi) |
| DE (1) | DE3534357A1 (fi) |
| FI (1) | FI69853C (fi) |
| FR (1) | FR2570707B1 (fi) |
| GB (1) | GB2164943B (fi) |
| IN (1) | IN164447B (fi) |
| IT (1) | IT1201468B (fi) |
| NO (1) | NO163229C (fi) |
| RO (1) | RO92931A (fi) |
| SE (1) | SE461099B (fi) |
| ZA (1) | ZA857170B (fi) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5215125A (en) * | 1987-03-13 | 1993-06-01 | Teepak, Inc. | Cellulose aminomethanate sausage casings |
| US4789006A (en) * | 1987-03-13 | 1988-12-06 | Teepak, Inc. | Cellulose aminomethanate sausage casings |
| US4997933A (en) * | 1989-06-12 | 1991-03-05 | Teepak, Inc. | Cellulose aminomethanate by acid neutralization |
| US4997934A (en) * | 1989-06-12 | 1991-03-05 | Teepak, Inc. | Cellulose aminomethanate by weight loss monitoring |
| US5229506A (en) * | 1989-06-12 | 1993-07-20 | Teepak, Inc. | Preparation of cellulose aminomethanate |
| US4999425A (en) * | 1989-06-12 | 1991-03-12 | Teepak, Inc. | Cellulose aminomethanate by ion-exchange extraction |
| US7133846B1 (en) * | 1995-02-13 | 2006-11-07 | Intertrust Technologies Corp. | Digital certificate support system, methods and techniques for secure electronic commerce transaction and rights management |
| DE19721609A1 (de) * | 1997-05-23 | 1998-11-26 | Zimmer Ag | Verfahren und Vorrichtung zum Verspinnen von Cellulosecarbamat-Lösungen |
| DE19757958A1 (de) * | 1997-12-24 | 1999-07-01 | Lurgi Zimmer Ag | Verfahren zur Herstellung einer Cellulosecarbamatlösung |
| DE102004007616B4 (de) * | 2004-02-17 | 2005-12-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Herstellung von Fasern und anderen Formkörpern aus Cellulosecarbamat und/oder regenerierter Cellulose |
| CN100516326C (zh) * | 2007-08-20 | 2009-07-22 | 中国科学院新疆理化技术研究所 | 纤维素氨基甲酸酯纤维的制备方法 |
| CN105517955A (zh) * | 2013-07-01 | 2016-04-20 | Ihk纤维公司 | 纤维素纺丝过程中的碱再循环 |
| EP3231901A1 (en) * | 2016-04-14 | 2017-10-18 | TreeToTextile AB | Process for spinning dissolved cellulose comprising recovering an aqueous sodium hydroxide cellulose solvent from the spent coagulation bath liquid |
| WO2020231315A1 (en) * | 2019-05-15 | 2020-11-19 | Treetotextile Ab | Recovery of chemicals in cellulose spinning |
| CN112390281A (zh) * | 2020-10-30 | 2021-02-23 | 冉国庆 | 一种从纤维素氨基甲酸酯（cc）纤维凝固浴中回收氧化锌的方法及应用 |
| WO2024146979A1 (en) * | 2023-01-05 | 2024-07-11 | Infinited Fiber Company Oy | Method of recycling an aqueous alkaline spin bath |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2103639A (en) * | 1934-02-09 | 1937-12-28 | Brown Co | Precipitation or setting of hydroxycellulose ethers from alkaline aqueous solutions |
| NL54005C (fi) * | 1935-02-14 | |||
| BE415565A (fi) * | 1935-05-15 | |||
| GB516672A (en) * | 1937-08-30 | 1940-01-09 | Du Pont | Improvements in or relating to the production of cellulose derivatives |
| US2283809A (en) * | 1940-02-24 | 1942-05-19 | Du Pont | Method of coagulating cellulosic solutions |
| US2371359A (en) * | 1941-12-30 | 1945-03-13 | Battelle Memorial Institute | Method of producing solution containing cellulosic material |
| FI62318C (fi) * | 1981-01-27 | 1982-12-10 | Neste Oy | Foerfarande foer framstaellning av ett alkaliloesligt cellulosaderivat |
| FI64603C (fi) * | 1981-12-30 | 1983-12-12 | Neste Oy | Foerfarande foer utfaellning av cellulosaderivat |
| FI67561C (fi) * | 1982-12-08 | 1985-04-10 | Neste Oy | Foerfarande foer upploesning av cellulosakarbamat |
| FI66624C (fi) * | 1983-11-02 | 1984-11-12 | Neste Oy | Foerfarande foer framstaellning av cellulosakarbamatfibrer eller -filmer |
| FI67562C (fi) * | 1984-03-12 | 1985-04-10 | Neste Oy | Foerfarande foer framstaellning av cellulosakarbamat |
-
1984
- 1984-09-27 FI FI843814A patent/FI69853C/fi not_active IP Right Cessation
-
1985
- 1985-09-18 ZA ZA857170A patent/ZA857170B/xx unknown
- 1985-09-20 CS CS856731A patent/CS673185A2/cs unknown
- 1985-09-23 IN IN675/CAL/85A patent/IN164447B/en unknown
- 1985-09-24 US US06/779,798 patent/US4639515A/en not_active Expired - Fee Related
- 1985-09-24 IT IT22253/85A patent/IT1201468B/it active
- 1985-09-25 DD DD85281019A patent/DD238982A5/de not_active IP Right Cessation
- 1985-09-26 AT AT0280785A patent/AT389327B/de not_active IP Right Cessation
- 1985-09-26 BR BR8504752A patent/BR8504752A/pt unknown
- 1985-09-26 SE SE8504457A patent/SE461099B/sv not_active IP Right Cessation
- 1985-09-26 CA CA000491574A patent/CA1236095A/en not_active Expired
- 1985-09-26 NO NO853794A patent/NO163229C/no unknown
- 1985-09-26 DE DE19853534357 patent/DE3534357A1/de active Granted
- 1985-09-27 GB GB08523915A patent/GB2164943B/en not_active Expired
- 1985-09-27 FR FR8514368A patent/FR2570707B1/fr not_active Expired
- 1985-09-27 RO RO85120223A patent/RO92931A/ro unknown
- 1985-09-27 JP JP60214409A patent/JPS6185452A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2570707A1 (fr) | 1986-03-28 |
| CS673185A2 (en) | 1990-12-13 |
| FI843814A0 (fi) | 1984-09-27 |
| FI69853B (fi) | 1985-12-31 |
| NO163229C (no) | 1990-04-25 |
| IT8522253A0 (it) | 1985-09-24 |
| GB2164943A (en) | 1986-04-03 |
| CA1236095A (en) | 1988-05-03 |
| SE8504457L (sv) | 1986-03-28 |
| SE8504457D0 (sv) | 1985-09-26 |
| BR8504752A (pt) | 1986-07-22 |
| NO853794L (no) | 1986-04-01 |
| FR2570707B1 (fr) | 1988-05-27 |
| JPS6185452A (ja) | 1986-05-01 |
| AT389327B (de) | 1989-11-27 |
| DE3534357A1 (de) | 1986-04-03 |
| NO163229B (no) | 1990-01-15 |
| ZA857170B (en) | 1986-05-28 |
| RO92931A (ro) | 1987-11-30 |
| SE461099B (sv) | 1990-01-08 |
| DE3534357C2 (fi) | 1988-12-01 |
| GB2164943B (en) | 1988-08-10 |
| IN164447B (fi) | 1989-03-18 |
| FI69853C (fi) | 1986-05-26 |
| JPH0455622B2 (fi) | 1992-09-03 |
| IT1201468B (it) | 1989-02-02 |
| GB8523915D0 (en) | 1985-10-30 |
| ATA280785A (de) | 1989-04-15 |
| US4639515A (en) | 1987-01-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DD238982A5 (de) | Zyklisches verfahren zur herstellung alkalischer loesungen von cellulosecarbamat | |
| EP0178292B1 (de) | Verfahren zur Herstellung von Cellulosecarbamaten | |
| DE19757958A1 (de) | Verfahren zur Herstellung einer Cellulosecarbamatlösung | |
| DE3343156C2 (fi) | ||
| DD201908A5 (de) | Verfahren zur herstellung einer alkali-loeslichen cellulose-verbindung | |
| DE69405127T2 (de) | Extraktion von Zitronensäuren | |
| EP0467008A1 (de) | Lösung von Cellulose in Wasser und N-Methyl-morpholin-N-oxid | |
| DE2621166C2 (de) | Verfahren zur Herstellung von Produkten aus regenerierter Zellulose | |
| DE2844202C2 (fi) | ||
| AT399348B (de) | Form- bzw. spinnmasse enthaltend cellulose und verwendung bestimmter stoffe zu ihrer stabilisierung | |
| DD238983A5 (de) | Zyklisches verfahren zur herstellung alkalischer loesungen von cellulosecarbamat | |
| DE3888618T2 (de) | Verfahren zur Herstellung von Zelluloseazetat-Formmasse. | |
| DE927140C (de) | Verfahren zur Fraktionierung von Staerke | |
| AT396596B (de) | Verfahren zur verminderung des carbamatgehaltes von erzeugnissen, die aus cellulosecarbamat hergestellt sind | |
| DE4022477C2 (de) | Verfahren zur Herstellung von 4-Chlorbenzolsulfinsäure-Natriumsalz | |
| DE2732187C2 (de) | Verformbare Celluloselösungen und Verfahren zu ihrer Herstellung | |
| AT391709B (de) | Verfahren zur faellung von zellulosecarbamat aus einer alkalischen loesung | |
| DE737505C (de) | Verfahren zur Herstellung einer hochkonzentrierten Loesung eines stabilen, hochviscosen, teilweise verseiften Celluloseacetates | |
| DE408866C (de) | Verfahren zur Herstellung von Ammoniumchlorid aus Ammoniumsulfat | |
| DE2052167C3 (de) | Verfahren zur Herstellung des gereinigten Ammoniumsalzes der 11-Cyanundecansäure bzw. der reinen freien 11-Cyanundecansäure | |
| DE2158501C (de) | Verfahren zur Herstellung von Polyvinylalkohol Fasern | |
| DE1936854A1 (de) | Verfahren zur Gewinnung von Ammoniumsulfamat | |
| DE972316C (de) | Verfahren zur Herstellung der optischen Isomeren von threo-1-p-Methylmercaptophenyl-2 -aminopropan-1, 3-diol | |
| DE743852C (de) | Verfahren zur Herabsetzung der Viskositaet von Viskose | |
| AT154898B (de) | Verfahren zur Herstellung von Wollersatzfasern. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ENJ | Ceased due to non-payment of renewal fee |