DD147259A5 - Verfahren zur chemischen umwandlung von lignocellulose - Google Patents

Verfahren zur chemischen umwandlung von lignocellulose Download PDF

Info

Publication number: DD147259A5
Authority: DD; German Democratic Republic
Prior art keywords: lignin; item; catalyst; methanol; liquid
Prior art date: 1978-11-27

Application number

DD79217045A

Other languages

German (de)

English (en)

Inventor

Laszlo Paszner

Chang Pei-Ching

Original Assignee

Thermoform Bau Forschung

Priority date (The priority date 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 date listed.)

1978-11-27

Filing date

1979-11-21

Publication date

1981-03-25

1978-11-27 Priority claimed from CA316,951A external-priority patent/CA1131415A/fr

1979-11-21 Application filed by Thermoform Bau Forschung filed Critical Thermoform Bau Forschung

1981-03-25 Publication of DD147259A5 publication Critical patent/DD147259A5/de

Links

238000000034 method Methods 0.000 title claims description 51
239000000126 substance Substances 0.000 title claims description 13
238000006243 chemical reaction Methods 0.000 title claims description 11
OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 81
229920005610 lignin Polymers 0.000 claims abstract description 58
238000010411 cooking Methods 0.000 claims abstract description 46
150000003839 salts Chemical class 0.000 claims abstract description 35
239000000835 fiber Substances 0.000 claims abstract description 31
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
239000002253 acid Substances 0.000 claims abstract description 24
239000003054 catalyst Substances 0.000 claims abstract description 24
LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 19
229910052751 metal Inorganic materials 0.000 claims abstract description 18
239000002184 metal Substances 0.000 claims abstract description 18
239000012978 lignocellulosic material Substances 0.000 claims abstract description 17
239000003960 organic solvent Substances 0.000 claims abstract description 6
229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 5
239000011707 mineral Substances 0.000 claims abstract description 5
239000007788 liquid Substances 0.000 claims description 28
239000000203 mixture Substances 0.000 claims description 27
CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 22
CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 22
101000588924 Anthopleura elegantissima Delta-actitoxin-Ael1a Proteins 0.000 claims description 21
235000000346 sugar Nutrition 0.000 claims description 21
239000002023 wood Substances 0.000 claims description 16
239000011777 magnesium Substances 0.000 claims description 15
229920002488 Hemicellulose Polymers 0.000 claims description 14
239000011575 calcium Substances 0.000 claims description 14
239000000463 material Substances 0.000 claims description 13
FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 11
229910052943 magnesium sulfate Inorganic materials 0.000 claims description 11
235000019341 magnesium sulphate Nutrition 0.000 claims description 11
239000002904 solvent Substances 0.000 claims description 11
OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 10
229910002651 NO3 Inorganic materials 0.000 claims description 10
NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 10
210000002421 cell wall Anatomy 0.000 claims description 10
229910052749 magnesium Inorganic materials 0.000 claims description 10
238000000926 separation method Methods 0.000 claims description 10
239000011877 solvent mixture Substances 0.000 claims description 9
229920003043 Cellulose fiber Polymers 0.000 claims description 8
VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
150000001450 anions Chemical class 0.000 claims description 8
239000003125 aqueous solvent Substances 0.000 claims description 8
229910052791 calcium Inorganic materials 0.000 claims description 8
VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 7
238000004090 dissolution Methods 0.000 claims description 7
NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
230000036961 partial effect Effects 0.000 claims description 6
150000008163 sugars Chemical class 0.000 claims description 6
241000218631 Coniferophyta Species 0.000 claims description 5
TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical group [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 5
241000218922 Magnoliophyta Species 0.000 claims description 5
238000005406 washing Methods 0.000 claims description 5
241000196324 Embryophyta Species 0.000 claims description 4
230000000694 effects Effects 0.000 claims description 4
235000010755 mineral Nutrition 0.000 claims description 4
GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 3
230000015572 biosynthetic process Effects 0.000 claims description 3
239000001110 calcium chloride Substances 0.000 claims description 3
229910001628 calcium chloride Inorganic materials 0.000 claims description 3
150000001805 chlorine compounds Chemical group 0.000 claims description 3
238000000855 fermentation Methods 0.000 claims description 3
230000004151 fermentation Effects 0.000 claims description 3
229910001629 magnesium chloride Inorganic materials 0.000 claims description 3
229910017604 nitric acid Inorganic materials 0.000 claims description 3
UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical group [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 2
229910052788 barium Inorganic materials 0.000 claims description 2
238000001704 evaporation Methods 0.000 claims description 2
230000008020 evaporation Effects 0.000 claims description 2
239000000843 powder Substances 0.000 claims description 2
239000000243 solution Substances 0.000 claims 4
IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical group [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 claims 2
ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical group [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims 2
238000009833 condensation Methods 0.000 claims 2
230000005494 condensation Effects 0.000 claims 2
YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical group [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims 2
108090000623 proteins and genes Proteins 0.000 claims 2
102000004169 proteins and genes Human genes 0.000 claims 2
239000007787 solid Substances 0.000 claims 2
DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 claims 1
239000007864 aqueous solution Substances 0.000 claims 1
WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical group [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 claims 1
229910001626 barium chloride Inorganic materials 0.000 claims 1
TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Inorganic materials [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims 1
OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims 1
239000001175 calcium sulphate Substances 0.000 claims 1
235000011132 calcium sulphate Nutrition 0.000 claims 1
239000000470 constituent Substances 0.000 claims 1
238000001816 cooling Methods 0.000 claims 1
238000001035 drying Methods 0.000 claims 1
239000004615 ingredient Substances 0.000 claims 1
235000001055 magnesium Nutrition 0.000 claims 1
239000003495 polar organic solvent Substances 0.000 claims 1
229920002678 cellulose Polymers 0.000 abstract description 14
239000001913 cellulose Substances 0.000 abstract description 14
230000007613 environmental effect Effects 0.000 abstract 1
241000183024 Populus tremula Species 0.000 description 10
235000019441 ethanol Nutrition 0.000 description 9
WUBBRNOQWQTFEX-UHFFFAOYSA-N 4-aminosalicylic acid Chemical compound NC1=CC=C(C(O)=O)C(O)=C1 WUBBRNOQWQTFEX-UHFFFAOYSA-N 0.000 description 6
BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 6
150000001720 carbohydrates Chemical class 0.000 description 5
235000014633 carbohydrates Nutrition 0.000 description 5
238000006116 polymerization reaction Methods 0.000 description 5
241000894007 species Species 0.000 description 5
241000218657 Picea Species 0.000 description 4
244000193463 Picea excelsa Species 0.000 description 4
239000011159 matrix material Substances 0.000 description 4
238000011084 recovery Methods 0.000 description 4
235000018185 Betula X alpestris Nutrition 0.000 description 3
235000018212 Betula X uliginosa Nutrition 0.000 description 3
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
150000007513 acids Chemical class 0.000 description 3
238000009835 boiling Methods 0.000 description 3
239000003795 chemical substances by application Substances 0.000 description 3
230000007062 hydrolysis Effects 0.000 description 3
238000006460 hydrolysis reaction Methods 0.000 description 3
239000002655 kraft paper Substances 0.000 description 3
238000004519 manufacturing process Methods 0.000 description 3
239000000123 paper Substances 0.000 description 3
239000011122 softwood Substances 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
229920001503 Glucan Polymers 0.000 description 2
240000000111 Saccharum officinarum Species 0.000 description 2
235000007201 Saccharum officinarum Nutrition 0.000 description 2
WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
241000209140 Triticum Species 0.000 description 2
235000021307 Triticum Nutrition 0.000 description 2
150000001298 alcohols Chemical class 0.000 description 2
239000007844 bleaching agent Substances 0.000 description 2
230000015556 catabolic process Effects 0.000 description 2
238000005341 cation exchange Methods 0.000 description 2
150000001768 cations Chemical class 0.000 description 2
238000006731 degradation reaction Methods 0.000 description 2
238000001914 filtration Methods 0.000 description 2
HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
239000003292 glue Substances 0.000 description 2
239000011121 hardwood Substances 0.000 description 2
238000010438 heat treatment Methods 0.000 description 2
VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
239000002244 precipitate Substances 0.000 description 2
239000000047 product Substances 0.000 description 2
239000010902 straw Substances 0.000 description 2
RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
244000144730 Amygdalus persica 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
OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
235000006040 Prunus persica var persica Nutrition 0.000 description 1
229920001131 Pulp (paper) Polymers 0.000 description 1
240000004808 Saccharomyces cerevisiae Species 0.000 description 1
FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
241000256856 Vespidae Species 0.000 description 1
YSVZGWAJIHWNQK-UHFFFAOYSA-N [3-(hydroxymethyl)-2-bicyclo[2.2.1]heptanyl]methanol Chemical compound C1CC2C(CO)C(CO)C1C2 YSVZGWAJIHWNQK-UHFFFAOYSA-N 0.000 description 1
239000003377 acid catalyst Substances 0.000 description 1
239000004063 acid-resistant material Substances 0.000 description 1
230000002378 acidificating effect Effects 0.000 description 1
239000000654 additive Substances 0.000 description 1
230000002411 adverse Effects 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
238000003321 atomic absorption spectrophotometry Methods 0.000 description 1
238000004061 bleaching Methods 0.000 description 1
230000009172 bursting Effects 0.000 description 1
239000006227 byproduct Substances 0.000 description 1
229910052799 carbon Inorganic materials 0.000 description 1
125000004432 carbon atom Chemical group C* 0.000 description 1
230000003197 catalytic effect Effects 0.000 description 1
238000005119 centrifugation Methods 0.000 description 1
XOYLJNJLGBYDTH-UHFFFAOYSA-M chlorogallium Chemical compound [Ga]Cl XOYLJNJLGBYDTH-UHFFFAOYSA-M 0.000 description 1
230000003247 decreasing effect Effects 0.000 description 1
230000018044 dehydration Effects 0.000 description 1
238000006297 dehydration reaction Methods 0.000 description 1
230000029087 digestion Effects 0.000 description 1
239000000539 dimer Substances 0.000 description 1
238000004851 dishwashing Methods 0.000 description 1
239000012153 distilled water Substances 0.000 description 1
238000002474 experimental method Methods 0.000 description 1
239000012530 fluid Substances 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
238000004128 high performance liquid chromatography Methods 0.000 description 1
230000003301 hydrolyzing effect Effects 0.000 description 1
238000011065 in-situ storage Methods 0.000 description 1
239000003999 initiator Substances 0.000 description 1
239000002198 insoluble material Substances 0.000 description 1
238000005259 measurement Methods 0.000 description 1
239000012454 non-polar solvent Substances 0.000 description 1
239000003791 organic solvent mixture 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
230000035515 penetration Effects 0.000 description 1
229920000642 polymer Polymers 0.000 description 1
230000001376 precipitating effect Effects 0.000 description 1
238000001556 precipitation Methods 0.000 description 1
238000002360 preparation method Methods 0.000 description 1
238000012545 processing Methods 0.000 description 1
230000002829 reductive effect Effects 0.000 description 1
230000000717 retained effect Effects 0.000 description 1
235000021309 simple sugar Nutrition 0.000 description 1
239000011780 sodium chloride Substances 0.000 description 1
238000003797 solvolysis reaction Methods 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
238000003756 stirring Methods 0.000 description 1
150000003463 sulfur Chemical class 0.000 description 1
230000002195 synergetic effect Effects 0.000 description 1
YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 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)
Mechanical Coupling Of Light Guides (AREA)
Diaphragms For Electromechanical Transducers (AREA)

DD79217045A 1978-11-27 1979-11-21 Verfahren zur chemischen umwandlung von lignocellulose DD147259A5 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
CA316,951A CA1131415A (fr)	1978-11-27	1978-11-27	Transformation en pate de la lignocellulose avec un melange aqueux d'un catalyseur et du methanol
DE2920731A DE2920731C2 (de)	1978-11-27	1979-05-22	Lignocelluloseaufschlußverfahren mit einem Gemisch von Wasser und niedrig molekularem aliphatischem Alkohol und Metallsalz

Publications (1)

Publication Number	Publication Date
DD147259A5 true DD147259A5 (de)	1981-03-25

Family

ID=25668832

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DD79217045A DD147259A5 (de)	1978-11-27	1979-11-21	Verfahren zur chemischen umwandlung von lignocellulose

Country Status (16)

Country	Link
AR (1)	AR223198A1 (fr)
AT (1)	AT372991B (fr)
AU (1)	AU528703B2 (fr)
BR (1)	BR7907651A (fr)
DD (1)	DD147259A5 (fr)
ES (1)	ES486267A1 (fr)
FI (1)	FI69129C (fr)
FR (1)	FR2442297A1 (fr)
GB (1)	GB2040332B (fr)
NO (1)	NO154274C (fr)
PH (1)	PH16526A (fr)
PL (1)	PL131834B1 (fr)
PT (1)	PT70475A (fr)
RO (1)	RO77556A (fr)
SE (1)	SE436899B (fr)
YU (1)	YU41897B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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 (fr) *	1986-05-29	1990-10-16	Edward A. Delong	Methode d'extraction des composes chimiques de la matiere lignocellulosique dissociee
CN101680165B (zh) *	2007-06-20	2013-01-30	龙树能源私营公司	用于分离生物质组分的单步方法
CN106574440B (zh)	2014-07-10	2020-09-11	利芙科学私人有限公司	用于水解木质纤维素材料的方法
CA2953702A1 (fr) *	2014-07-10	2016-01-14	Leaf Sciences Pty Ltd	Procedes de traitement d'une matiere lignocellulosique
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)

* Cited by examiner, † Cited by third party
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 YU YU2822/79A patent/YU41897B/xx unknown
- 1979-11-19 NO NO793738A patent/NO154274C/no unknown
- 1979-11-20 PT PT70475A patent/PT70475A/pt unknown
- 1979-11-21 DD DD79217045A patent/DD147259A5/de not_active IP Right Cessation
- 1979-11-21 AU AU53056/79A patent/AU528703B2/en not_active Ceased
- 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/fr unknown
- 1979-11-26 FR FR7929082A patent/FR2442297A1/fr active Granted
- 1979-11-26 PH PH23330A patent/PH16526A/en unknown
- 1979-11-26 BR BR7907651A patent/BR7907651A/pt not_active IP Right Cessation
- 1979-11-27 AR AR279044A patent/AR223198A1/es active
- 1979-11-27 GB GB7940923A patent/GB2040332B/en not_active Expired

Also Published As

Publication number	Publication date
ATA726179A (de)	1983-04-15
BR7907651A (pt)	1980-08-26
GB2040332B (en)	1983-09-07
SE7909674L (sv)	1980-05-28
ES486267A1 (es)	1980-05-16
AR223198A1 (es)	1981-07-31
FI69129B (fi)	1985-08-30
AT372991B (de)	1983-12-12
AU528703B2 (en)	1983-05-12
RO77556A (fr)	1982-07-06
FR2442297B1 (fr)	1983-05-13
PL219837A1 (fr)	1980-12-15
FI69129C (fi)	1985-12-10
PT70475A (en)	1979-12-01
PH16526A (en)	1983-11-10
PL131834B1 (en)	1985-01-31
YU41897B (en)	1988-02-29
NO154274C (no)	1986-08-20
FR2442297A1 (fr)	1980-06-20
FI793678A7 (fi)	1980-05-28
GB2040332A (en)	1980-08-28
YU282279A (en)	1982-10-31
SE436899B (sv)	1985-01-28
NO793738L (no)	1980-05-28
NO154274B (no)	1986-05-12
AU5305679A (en)	1981-06-04

Legal Events

Date	Code	Title	Description
1995-03-16	ENJ	Ceased due to non-payment of renewal fee

Publication	Publication Date	Title
EP0584675B1 (fr)	1998-10-28	Délignification de bois à l'acide acétique avec addition d'acide formique
DE2737118C2 (fr)	1989-06-15
EP1190137B1 (fr)	2003-11-26	Procede pour separer de la biomasse contenant de la lignocellulose
DE2732289C2 (fr)	1988-10-20
DE2732327C2 (fr)	1988-08-11
DE2857039C2 (de)	1994-01-13	Verfahren zur Umwandlung von Lignocellulose
DE10297032T5 (de)	2004-08-05	Verfahren zur Zellstoffherstellung
DE2246647A1 (de)	1973-03-29	Verfahren zur fraktionierten gewinnung von lignin und cellulose aus baumrinde bzw. borke
DE2920731C2 (de)	1983-11-03	Lignocelluloseaufschlußverfahren mit einem Gemisch von Wasser und niedrig molekularem aliphatischem Alkohol und Metallsalz
EP4291708B1 (fr)	2024-12-18	Procédé pour une décomposition mécanique chimiquement assistée de copeaux de bois ou de copeaux de bois
WO2003025280A1 (fr)	2003-03-27	Procede pour separer des hemicelluloses d'une biomasse renfermant des hemicelluloses
DE2113851A1 (de)	1971-10-14	Verfahren zur Herstellung von Mannose und Mannosederivaten
AT404478B (de)	1998-11-25	Celluloseherstellung
EP1828254A1 (fr)	2007-09-05	Procede de production d'hemicelluloses a partir d'un materiau lignocellulosique
DE588577C (de)	1933-11-24	Verfahren zur Herstellung von Halbzellstoffen aus Stroh, Graesern oder aehnlichen Pflanzenstoffen
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