FI69129C - Foerfarande foer uppslutning av lignocellulosahaltigt material - Google Patents
Foerfarande foer uppslutning av lignocellulosahaltigt material Download PDFInfo
- Publication number
- FI69129C FI69129C FI793678A FI793678A FI69129C FI 69129 C FI69129 C FI 69129C FI 793678 A FI793678 A FI 793678A FI 793678 A FI793678 A FI 793678A FI 69129 C FI69129 C FI 69129C
- Authority
- FI
- Finland
- Prior art keywords
- lignin
- cooking
- solution
- alcohol
- acid
- Prior art date
Links
- 239000000463 material Substances 0.000 title description 6
- 229920005610 lignin Polymers 0.000 claims description 46
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 39
- 238000010411 cooking Methods 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 27
- 150000003839 salts Chemical class 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 21
- 239000002253 acid Substances 0.000 claims description 17
- 235000000346 sugar Nutrition 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
- 239000011777 magnesium Substances 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 9
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 8
- 239000011575 calcium Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 5
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 5
- 235000010755 mineral Nutrition 0.000 claims description 5
- 239000011707 mineral Substances 0.000 claims description 5
- 229920003043 Cellulose fiber Polymers 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- 229910002651 NO3 Inorganic materials 0.000 claims description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 2
- 229910052788 barium Inorganic materials 0.000 claims description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 238000005119 centrifugation Methods 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims description 2
- 230000008020 evaporation Effects 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims 2
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 claims 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims 1
- 239000007857 degradation product Substances 0.000 claims 1
- 229910017604 nitric acid Inorganic materials 0.000 claims 1
- 230000001376 precipitating effect Effects 0.000 claims 1
- 239000000835 fiber Substances 0.000 description 24
- 239000000243 solution Substances 0.000 description 20
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 16
- 239000002023 wood Substances 0.000 description 13
- 229920002678 cellulose Polymers 0.000 description 12
- 239000001913 cellulose Substances 0.000 description 12
- 239000003054 catalyst Substances 0.000 description 10
- 241000218657 Picea Species 0.000 description 8
- 235000019441 ethanol Nutrition 0.000 description 8
- 230000008929 regeneration Effects 0.000 description 8
- 238000011069 regeneration method Methods 0.000 description 8
- 239000002904 solvent Substances 0.000 description 8
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 6
- 239000001110 calcium chloride Substances 0.000 description 6
- 229910001628 calcium chloride Inorganic materials 0.000 description 6
- 235000011148 calcium chloride Nutrition 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 6
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 6
- 150000008163 sugars Chemical class 0.000 description 6
- 229920002488 Hemicellulose Polymers 0.000 description 5
- 241000218631 Coniferophyta Species 0.000 description 4
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical class [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 235000014633 carbohydrates Nutrition 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000123 paper Substances 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 241000894007 species Species 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- 241000183024 Populus tremula Species 0.000 description 3
- 229920001131 Pulp (paper) Polymers 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 150000001720 carbohydrates Chemical class 0.000 description 3
- 239000002655 kraft paper Substances 0.000 description 3
- 235000011147 magnesium chloride Nutrition 0.000 description 3
- 239000011877 solvent mixture Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 238000005341 cation exchange Methods 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000012978 lignocellulosic material Substances 0.000 description 2
- 229910001629 magnesium chloride Inorganic materials 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 239000003791 organic solvent mixture Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- LNAZSHAWQACDHT-XIYTZBAFSA-N (2r,3r,4s,5r,6s)-4,5-dimethoxy-2-(methoxymethyl)-3-[(2s,3r,4s,5r,6r)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6r)-4,5,6-trimethoxy-2-(methoxymethyl)oxan-3-yl]oxyoxane Chemical compound CO[C@@H]1[C@@H](OC)[C@H](OC)[C@@H](COC)O[C@H]1O[C@H]1[C@H](OC)[C@@H](OC)[C@H](O[C@H]2[C@@H]([C@@H](OC)[C@H](OC)O[C@@H]2COC)OC)O[C@@H]1COC LNAZSHAWQACDHT-XIYTZBAFSA-N 0.000 description 1
- NAOLWIGVYRIGTP-UHFFFAOYSA-N 1,3,5-trihydroxyanthracene-9,10-dione Chemical class C1=CC(O)=C2C(=O)C3=CC(O)=CC(O)=C3C(=O)C2=C1 NAOLWIGVYRIGTP-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 235000018185 Betula X alpestris Nutrition 0.000 description 1
- 235000018212 Betula X uliginosa Nutrition 0.000 description 1
- 102100027819 Cytosolic beta-glucosidase Human genes 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 101000859692 Homo sapiens Cytosolic beta-glucosidase Proteins 0.000 description 1
- 101000997662 Homo sapiens Lysosomal acid glucosylceramidase Proteins 0.000 description 1
- 241000446313 Lamella Species 0.000 description 1
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 description 1
- 239000004472 Lysine Substances 0.000 description 1
- 241000218922 Magnoliophyta Species 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- DTAFLBZLAZYRDX-UHFFFAOYSA-N OOOOOO Chemical compound OOOOOO DTAFLBZLAZYRDX-UHFFFAOYSA-N 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- 208000034953 Twin anemia-polycythemia sequence Diseases 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- -1 aliphatic alcohols Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 238000003321 atomic absorption spectrophotometry Methods 0.000 description 1
- 229910001626 barium chloride Inorganic materials 0.000 description 1
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 239000012454 non-polar solvent Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- KVNYFPKFSJIPBJ-UHFFFAOYSA-N ortho-diethylbenzene Natural products CCC1=CC=CC=C1CC KVNYFPKFSJIPBJ-UHFFFAOYSA-N 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000004627 regenerated cellulose Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000001226 reprecipitation Methods 0.000 description 1
- 235000021309 simple sugar Nutrition 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 238000003797 solvolysis reaction Methods 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000007655 standard test method Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 150000003463 sulfur Chemical class 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 229920001221 xylan Polymers 0.000 description 1
- 150000004823 xylans Chemical class 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/20—Pulping cellulose-containing materials with organic solvents or in solvent environment
Landscapes
- Paper (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA316951 | 1978-11-27 | ||
| CA316,951A CA1131415A (en) | 1978-11-27 | 1978-11-27 | Pulping of lignocellulose with aqueous methanol/ catalyst mixture |
| DE2920731A DE2920731C2 (de) | 1978-11-27 | 1979-05-22 | Lignocelluloseaufschlußverfahren mit einem Gemisch von Wasser und niedrig molekularem aliphatischem Alkohol und Metallsalz |
| DE2920731 | 1979-05-22 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI793678A7 FI793678A7 (fi) | 1980-05-28 |
| FI69129B FI69129B (fi) | 1985-08-30 |
| FI69129C true FI69129C (fi) | 1985-12-10 |
Family
ID=25668832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI793678A FI69129C (fi) | 1978-11-27 | 1979-11-23 | Foerfarande foer uppslutning av lignocellulosahaltigt material |
Country Status (16)
| Country | Link |
|---|---|
| AR (1) | AR223198A1 (de) |
| AT (1) | AT372991B (de) |
| AU (1) | AU528703B2 (de) |
| BR (1) | BR7907651A (de) |
| DD (1) | DD147259A5 (de) |
| ES (1) | ES486267A1 (de) |
| FI (1) | FI69129C (de) |
| FR (1) | FR2442297A1 (de) |
| GB (1) | GB2040332B (de) |
| NO (1) | NO154274C (de) |
| PH (1) | PH16526A (de) |
| PL (1) | PL131834B1 (de) |
| PT (1) | PT70475A (de) |
| RO (1) | RO77556A (de) |
| SE (1) | SE436899B (de) |
| YU (1) | YU41897B (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4594130A (en) * | 1978-11-27 | 1986-06-10 | Chang Pei Ching | Pulping of lignocellulose with aqueous alcohol and alkaline earth metal salt catalyst |
| CA1275286C (en) * | 1986-05-29 | 1990-10-16 | Edward A. Delong | Method for extracting the chemical components from dissociated lignocellulosic material |
| ES2427215T3 (es) * | 2007-06-20 | 2013-10-29 | Nagarjuna Energy Private Limited | Procedimiento de una sola etapa para separar componentes de la biomasa |
| CA2953715A1 (en) | 2014-07-10 | 2016-01-14 | Leaf Sciences Pty Ltd | Methods for hydrolysing lignocellulosic material |
| MX2017000276A (es) * | 2014-07-10 | 2017-04-27 | Leaf Sciences Pty Ltd | Metodos para tratar material lignocelulosico. |
| CN114645479B (zh) * | 2020-12-19 | 2023-07-25 | 山东洲星天然物提取智能设备有限公司 | 一种纸浆的制备方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| YU41117B (en) * | 1977-08-31 | 1986-12-31 | Paszner Laszlo | Process for obtaining sugovar, lingnig and cellulose from lignocellulose |
-
1979
- 1979-11-14 AT AT0726179A patent/AT372991B/de not_active IP Right Cessation
- 1979-11-19 NO NO793738A patent/NO154274C/no unknown
- 1979-11-19 YU YU2822/79A patent/YU41897B/xx unknown
- 1979-11-20 PT PT70475A patent/PT70475A/pt unknown
- 1979-11-21 AU AU53056/79A patent/AU528703B2/en not_active Ceased
- 1979-11-21 DD DD79217045A patent/DD147259A5/de not_active IP Right Cessation
- 1979-11-22 SE SE7909674A patent/SE436899B/sv not_active IP Right Cessation
- 1979-11-23 PL PL1979219837A patent/PL131834B1/pl unknown
- 1979-11-23 FI FI793678A patent/FI69129C/fi not_active IP Right Cessation
- 1979-11-23 ES ES486267A patent/ES486267A1/es not_active Expired
- 1979-11-24 RO RO7999349A patent/RO77556A/ro unknown
- 1979-11-26 BR BR7907651A patent/BR7907651A/pt not_active IP Right Cessation
- 1979-11-26 PH PH23330A patent/PH16526A/en unknown
- 1979-11-26 FR FR7929082A patent/FR2442297A1/fr active Granted
- 1979-11-27 GB GB7940923A patent/GB2040332B/en not_active Expired
- 1979-11-27 AR AR279044A patent/AR223198A1/es active
Also Published As
| Publication number | Publication date |
|---|---|
| NO154274C (no) | 1986-08-20 |
| AU5305679A (en) | 1981-06-04 |
| RO77556A (ro) | 1982-07-06 |
| AT372991B (de) | 1983-12-12 |
| SE7909674L (sv) | 1980-05-28 |
| NO154274B (no) | 1986-05-12 |
| BR7907651A (pt) | 1980-08-26 |
| YU41897B (en) | 1988-02-29 |
| PL219837A1 (de) | 1980-12-15 |
| PT70475A (en) | 1979-12-01 |
| PL131834B1 (en) | 1985-01-31 |
| AU528703B2 (en) | 1983-05-12 |
| NO793738L (no) | 1980-05-28 |
| FI793678A7 (fi) | 1980-05-28 |
| GB2040332B (en) | 1983-09-07 |
| ES486267A1 (es) | 1980-05-16 |
| AR223198A1 (es) | 1981-07-31 |
| GB2040332A (en) | 1980-08-28 |
| PH16526A (en) | 1983-11-10 |
| ATA726179A (de) | 1983-04-15 |
| FR2442297A1 (fr) | 1980-06-20 |
| YU282279A (en) | 1982-10-31 |
| FR2442297B1 (de) | 1983-05-13 |
| DD147259A5 (de) | 1981-03-25 |
| FI69129B (fi) | 1985-08-30 |
| SE436899B (sv) | 1985-01-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Patent lapsed | ||
| MM | Patent lapsed |
Owner name: BAU- UND FORSCHUNGSGESELLSCHAFT |