FI65265C - Foerfarande foer framstaellning av viskos - Google Patents
Foerfarande foer framstaellning av viskos Download PDFInfo
- Publication number
- FI65265C FI65265C FI793344A FI793344A FI65265C FI 65265 C FI65265 C FI 65265C FI 793344 A FI793344 A FI 793344A FI 793344 A FI793344 A FI 793344A FI 65265 C FI65265 C FI 65265C
- Authority
- FI
- Finland
- Prior art keywords
- cellulose
- energy
- alkali
- viskos
- less
- Prior art date
Links
- 229920002678 cellulose Polymers 0.000 claims description 28
- 239000001913 cellulose Substances 0.000 claims description 28
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 26
- 239000003513 alkali Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 229920000297 Rayon Polymers 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 4
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000012991 xanthate Substances 0.000 claims description 2
- 230000019635 sulfation Effects 0.000 claims 1
- 238000005670 sulfation reaction Methods 0.000 claims 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 8
- 229920005610 lignin Polymers 0.000 description 6
- 239000002023 wood Substances 0.000 description 5
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 230000005070 ripening Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- GJEAMHAFPYZYDE-UHFFFAOYSA-N [C].[S] Chemical compound [C].[S] GJEAMHAFPYZYDE-UHFFFAOYSA-N 0.000 description 2
- 230000003113 alkalizing effect Effects 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 230000035800 maturation Effects 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 240000000731 Fagus sylvatica Species 0.000 description 1
- 235000010099 Fagus sylvatica Nutrition 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 150000002696 manganese Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000021962 pH elevation Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005486 sulfidation Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- C08B1/08—Alkali cellulose
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD20870878 | 1978-10-27 | ||
| DD78208708A DD140747A1 (de) | 1978-10-27 | 1978-10-27 | Verfahren zur herstellung von viskosen |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI793344A7 FI793344A7 (fi) | 1980-04-28 |
| FI65265B FI65265B (fi) | 1983-12-30 |
| FI65265C true FI65265C (fi) | 1984-04-10 |
Family
ID=5515033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI793344A FI65265C (fi) | 1978-10-27 | 1979-10-25 | Foerfarande foer framstaellning av viskos |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT384229B (enrdf_load_stackoverflow) |
| DD (1) | DD140747A1 (enrdf_load_stackoverflow) |
| DE (1) | DE2941624A1 (enrdf_load_stackoverflow) |
| FI (1) | FI65265C (enrdf_load_stackoverflow) |
| PL (1) | PL115882B2 (enrdf_load_stackoverflow) |
| RO (1) | RO77528A (enrdf_load_stackoverflow) |
| SE (1) | SE7908897L (enrdf_load_stackoverflow) |
| YU (1) | YU257379A (enrdf_load_stackoverflow) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4409384A (en) | 1981-11-12 | 1983-10-11 | E. I. Du Pont De Nemours And Company | Viscose preparation using low concentration caustic |
| AT402739B (de) * | 1995-09-19 | 1997-08-25 | Chemiefaser Lenzing Ag | Verfahren zur herstellung eines cellulosischen formkörpers |
| GB9605073D0 (en) * | 1996-03-11 | 1996-05-08 | Hoechst Ag | Manufacture of vicose and articles therefrom |
| GB9620585D0 (en) * | 1996-10-03 | 1996-11-20 | Courtaulds Fibres Holdings Ltd | Improvements in the manufacture of extruded articles |
| DE19707387C1 (de) * | 1997-02-25 | 1998-04-02 | Hoechst Ag | Verfahren zur Herstellung von Viskose |
| SE511842C2 (sv) * | 1997-04-18 | 1999-12-06 | Akzo Nobel Surface Chem | Sätt att framställa en viskoslösning |
| GB9720213D0 (en) | 1997-09-23 | 1997-11-26 | Kelheim Faserwerk Gmbh | Manufacture of viscose and articles therefrom |
| JP4646492B2 (ja) * | 2001-03-15 | 2011-03-09 | サッピ リミテッド | パルプ処理およびプロセス |
| GB2493488A (en) * | 2011-05-20 | 2013-02-13 | Innovia Films Ltd | Process for dissolving and casting non-dissolving cellulose |
| GB2493490A (en) * | 2011-05-20 | 2013-02-13 | Innovia Films Ltd | Process for dissolving and casting non-dissolving cellulose |
| NO2753575T3 (enrdf_load_stackoverflow) | 2014-02-03 | 2018-07-28 | ||
| DE102019134819A1 (de) | 2019-12-17 | 2021-06-17 | SAPPI Southern Africa Limited | Herstellung einer Alkalicellulose mit einer verbesserten Reaktivität für Derivatisierungsreaktionen sowie Herstellung eines Chemiezellstoffs mit einer verbesserten Reaktivität für Derivatisierungsreaktionen |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD75636A (enrdf_load_stackoverflow) * |
-
1978
- 1978-10-27 DD DD78208708A patent/DD140747A1/de not_active IP Right Cessation
-
1979
- 1979-10-03 AT AT0645879A patent/AT384229B/de not_active IP Right Cessation
- 1979-10-13 DE DE19792941624 patent/DE2941624A1/de active Granted
- 1979-10-23 YU YU02573/79A patent/YU257379A/xx unknown
- 1979-10-25 FI FI793344A patent/FI65265C/fi not_active IP Right Cessation
- 1979-10-26 SE SE7908897A patent/SE7908897L/ unknown
- 1979-10-26 RO RO7999061A patent/RO77528A/ro unknown
- 1979-10-26 PL PL1979219237A patent/PL115882B2/pl unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE7908897L (sv) | 1980-04-28 |
| PL115882B2 (en) | 1981-05-30 |
| YU257379A (en) | 1982-08-31 |
| AT384229B (de) | 1987-10-12 |
| FI793344A7 (fi) | 1980-04-28 |
| PL219237A2 (enrdf_load_stackoverflow) | 1980-09-22 |
| ATA645879A (de) | 1987-03-15 |
| DE2941624A1 (de) | 1980-05-08 |
| RO77528A (ro) | 1982-09-09 |
| FI65265B (fi) | 1983-12-30 |
| DD140747A1 (de) | 1980-03-26 |
| DE2941624C2 (enrdf_load_stackoverflow) | 1988-03-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FI65265C (fi) | Foerfarande foer framstaellning av viskos | |
| SU1194282A3 (ru) | Способ разложени лигноцеллюлозного материала | |
| US12065780B2 (en) | Modified sulfuric acid and uses thereof | |
| US3274049A (en) | Process for pulping bagasse with ammonium hydroxide and oxygen | |
| EP3093389B1 (en) | Dissolving pulp | |
| US2878118A (en) | Purified cellulose fiber and process for producing same | |
| US2110546A (en) | Production of cellulose and cellulosic products | |
| US3937647A (en) | Method of increasing cellulosic pulp yields in an alkaline digestion process | |
| US2074339A (en) | Preparation of cellulosic material | |
| US2118074A (en) | Manufacture of cellulose | |
| KR20180083251A (ko) | 셀룰로스의 제조 방법 | |
| SU1296014A3 (ru) | Способ получени целлюлозы с низким содержанием лигнина | |
| US2187710A (en) | Wood cellulose and method of producing same | |
| RU2135665C1 (ru) | Способ получения целлюлозной массы | |
| US2061616A (en) | Production of cellulose | |
| US2003347A (en) | Manufacture of cellulose or cellulosic materials | |
| RU2248421C1 (ru) | Способ получения высокооблагороженной целлюлозы | |
| US2118039A (en) | Manufacture of cellulose | |
| SU1557228A1 (ru) | Способ получени целлюлозы дл химической переработки | |
| DE4107357C1 (enrdf_load_stackoverflow) | ||
| US2045345A (en) | Manufacture of cellulose products | |
| RU2212483C1 (ru) | Способ получения целлюлозы | |
| US4134787A (en) | Delignification of lignocellulosic material with an alkaline liquor containing a cyclic amino compound | |
| US1831197A (en) | Low viscosity cellulose fiber and process of making | |
| NZ202296A (en) | Pretreatment of wood prior to sulphate cooking for manufacture of cellulose pulp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Patent lapsed | ||
| MM | Patent lapsed |
Owner name: VEB FILMFABRIK WOLFEN |