CA2188909A1 - Procede de production de pate et de papier - Google Patents

Procede de production de pate et de papier

Info

Publication number: CA2188909A1
Authority: CA; Canada
Prior art keywords: pretreatment; process according; bleaching; agent; paper
Prior art date: 1995-10-30
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.): Abandoned

Application number

CA 2188909

Other languages

English (en)

Inventor

Joachim Grutze

Martin Riegels

Eckhard Wenderoth

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Bayer AG

Original Assignee

Bayer AG

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.)

1995-10-30

Filing date

1996-10-25

Publication date

1997-05-01

1995-10-30 Priority claimed from DE1995140359 external-priority patent/DE19540359A1/de

1995-11-22 Priority claimed from DE1995143480 external-priority patent/DE19543480A1/de

1996-10-25 Application filed by Bayer AG filed Critical Bayer AG

1997-05-01 Publication of CA2188909A1 publication Critical patent/CA2188909A1/fr

Status Abandoned legal-status Critical Current

Links

238000000034 method Methods 0.000 title claims description 39
238000004519 manufacturing process Methods 0.000 title claims description 10
239000000203 mixture Substances 0.000 claims abstract description 40
239000003795 chemical substances by application Substances 0.000 claims abstract description 23
239000002270 dispersing agent Substances 0.000 claims abstract description 18
239000000080 wetting agent Substances 0.000 claims abstract description 18
238000009736 wetting Methods 0.000 claims abstract description 12
125000000129 anionic group Chemical group 0.000 claims abstract description 7
239000000835 fiber Substances 0.000 claims abstract description 6
239000012209 synthetic fiber Substances 0.000 claims abstract 2
229920002994 synthetic fiber Polymers 0.000 claims abstract 2
238000004061 bleaching Methods 0.000 claims description 28
MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 16
150000001875 compounds Chemical class 0.000 claims description 13
150000003839 salts Chemical class 0.000 claims description 11
229920000742 Cotton Polymers 0.000 claims description 8
WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 8
229920001131 Pulp (paper) Polymers 0.000 claims description 7
239000002657 fibrous material Substances 0.000 claims description 7
WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 claims description 6
-1 lithium cations Chemical class 0.000 claims description 6
238000002360 preparation method Methods 0.000 claims description 6
QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 5
150000002978 peroxides Chemical class 0.000 claims description 5
239000003381 stabilizer Substances 0.000 claims description 5
229910019142 PO4 Inorganic materials 0.000 claims description 3
239000007844 bleaching agent Substances 0.000 claims description 3
238000004064 recycling Methods 0.000 claims description 3
CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 2
150000007942 carboxylates Chemical class 0.000 claims description 2
229910052744 lithium Inorganic materials 0.000 claims description 2
NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
239000004094 surface-active agent Substances 0.000 claims description 2
239000010452 phosphate Substances 0.000 claims 1
BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims 1
239000000975 dye Substances 0.000 description 23
239000002994 raw material Substances 0.000 description 19
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
239000000126 substance Substances 0.000 description 10
WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 9
238000007792 addition Methods 0.000 description 9
GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 8
239000002253 acid Substances 0.000 description 7
241000196324 Embryophyta Species 0.000 description 6
IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 6
DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
239000002585 base Substances 0.000 description 6
150000001768 cations Chemical class 0.000 description 5
238000004043 dyeing Methods 0.000 description 5
125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 5
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
150000007513 acids Chemical class 0.000 description 4
229910003002 lithium salt Inorganic materials 0.000 description 4
159000000002 lithium salts Chemical class 0.000 description 4
239000000463 material Substances 0.000 description 4
235000019353 potassium silicate Nutrition 0.000 description 4
239000000047 product Substances 0.000 description 4
NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 3
238000010521 absorption reaction Methods 0.000 description 3
150000003863 ammonium salts Chemical class 0.000 description 3
239000001257 hydrogen Substances 0.000 description 3
229910052739 hydrogen Inorganic materials 0.000 description 3
125000004435 hydrogen atom Chemical class [H]* 0.000 description 3
PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical class C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 3
125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 description 2
YIWUKEYIRIRTPP-UHFFFAOYSA-N 2-ethylhexan-1-ol Chemical compound CCCCC(CC)CO YIWUKEYIRIRTPP-UHFFFAOYSA-N 0.000 description 2
235000018185 Betula X alpestris Nutrition 0.000 description 2
235000018212 Betula X uliginosa Nutrition 0.000 description 2
RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 2
KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
RGHNJXZEOKUKBD-SQOUGZDYSA-N Gluconic acid Natural products OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 2
QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 description 2
229910004878 Na2S2O4 Inorganic materials 0.000 description 2
UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
235000011613 Pinus brutia Nutrition 0.000 description 2
241000018646 Pinus brutia Species 0.000 description 2
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
150000001408 amides Chemical class 0.000 description 2
125000003118 aryl group Chemical group 0.000 description 2
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
238000010009 beating Methods 0.000 description 2
SNAMIIGIIUQQSP-UHFFFAOYSA-N bis(6-methylheptyl) hydrogen phosphate Chemical compound CC(C)CCCCCOP(O)(=O)OCCCCCC(C)C SNAMIIGIIUQQSP-UHFFFAOYSA-N 0.000 description 2
239000007859 condensation product Substances 0.000 description 2
239000000470 constituent Substances 0.000 description 2
238000010411 cooking Methods 0.000 description 2
230000029087 digestion Effects 0.000 description 2
125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
239000000174 gluconic acid Substances 0.000 description 2
235000012208 gluconic acid Nutrition 0.000 description 2
239000001301 oxygen Substances 0.000 description 2
229910052760 oxygen Inorganic materials 0.000 description 2
235000021317 phosphate Nutrition 0.000 description 2
229910052700 potassium Inorganic materials 0.000 description 2
159000000001 potassium salts Chemical class 0.000 description 2
229910052708 sodium Inorganic materials 0.000 description 2
239000011734 sodium Substances 0.000 description 2
JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 2
159000000000 sodium salts Chemical class 0.000 description 2
RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 description 2
150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 2
WHOZNOZYMBRCBL-OUKQBFOZSA-N (2E)-2-Tetradecenal Chemical compound CCCCCCCCCCC\C=C\C=O WHOZNOZYMBRCBL-OUKQBFOZSA-N 0.000 description 1
125000004178 (C1-C4) alkyl group Chemical group 0.000 description 1
CDGZMJQGBQRSFY-YPKPFQOOSA-N (z)-n,n-bis(2-methylpropyl)octadec-9-enamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)N(CC(C)C)CC(C)C CDGZMJQGBQRSFY-YPKPFQOOSA-N 0.000 description 1
NQDZCRSUOVPTII-UHFFFAOYSA-N 10-methylundecan-1-ol Chemical compound CC(C)CCCCCCCCCO NQDZCRSUOVPTII-UHFFFAOYSA-N 0.000 description 1
WBIQQQGBSDOWNP-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid Chemical compound CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O WBIQQQGBSDOWNP-UHFFFAOYSA-N 0.000 description 1
QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
244000025254 Cannabis sativa Species 0.000 description 1
235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 description 1
229920001732 Lignosulfonate Polymers 0.000 description 1
241000282320 Panthera leo Species 0.000 description 1
241000209504 Poaceae Species 0.000 description 1
206010037660 Pyrexia Diseases 0.000 description 1
229920002125 Sokalan® Polymers 0.000 description 1
ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical class OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 1
229920001807 Urea-formaldehyde Polymers 0.000 description 1
RGCKGOZRHPZPFP-UHFFFAOYSA-N alizarin Chemical compound C1=CC=C2C(=O)C3=C(O)C(O)=CC=C3C(=O)C2=C1 RGCKGOZRHPZPFP-UHFFFAOYSA-N 0.000 description 1
229910052783 alkali metal Inorganic materials 0.000 description 1
125000002877 alkyl aryl group Chemical group 0.000 description 1
150000008055 alkyl aryl sulfonates Chemical class 0.000 description 1
239000002518 antifoaming agent Substances 0.000 description 1
125000005228 aryl sulfonate group Chemical group 0.000 description 1
KCXMKQUNVWSEMD-UHFFFAOYSA-N benzyl chloride Chemical compound ClCC1=CC=CC=C1 KCXMKQUNVWSEMD-UHFFFAOYSA-N 0.000 description 1
229940073608 benzyl chloride Drugs 0.000 description 1
235000009120 camo Nutrition 0.000 description 1
125000004432 carbon atom Chemical group C* 0.000 description 1
239000004359 castor oil Substances 0.000 description 1
229920002678 cellulose Polymers 0.000 description 1
239000001913 cellulose Substances 0.000 description 1
235000005607 chanvre indien Nutrition 0.000 description 1
239000000460 chlorine Substances 0.000 description 1
229910052801 chlorine Inorganic materials 0.000 description 1
239000008139 complexing agent Substances 0.000 description 1
230000001143 conditioned effect Effects 0.000 description 1
229910052802 copper Inorganic materials 0.000 description 1
125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
239000002761 deinking Substances 0.000 description 1
USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical class C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 1
MOTZDAYCYVMXPC-UHFFFAOYSA-N dodecyl hydrogen sulfate Chemical compound CCCCCCCCCCCCOS(O)(=O)=O MOTZDAYCYVMXPC-UHFFFAOYSA-N 0.000 description 1
229940043264 dodecyl sulfate Drugs 0.000 description 1
229940060296 dodecylbenzenesulfonic acid Drugs 0.000 description 1
229960001484 edetic acid Drugs 0.000 description 1
230000000694 effects Effects 0.000 description 1
JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 1
239000000194 fatty acid Substances 0.000 description 1
230000002349 favourable effect Effects 0.000 description 1
238000007730 finishing process Methods 0.000 description 1
238000000227 grinding Methods 0.000 description 1
239000011487 hemp Substances 0.000 description 1
QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
230000005764 inhibitory process Effects 0.000 description 1
150000002500 ions Chemical class 0.000 description 1
XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
229910052808 lithium carbonate Inorganic materials 0.000 description 1
150000002642 lithium compounds Chemical class 0.000 description 1
229910000032 lithium hydrogen carbonate Inorganic materials 0.000 description 1
229910021645 metal ion Inorganic materials 0.000 description 1
WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
230000000877 morphologic effect Effects 0.000 description 1
239000003921 oil Substances 0.000 description 1
230000035515 penetration Effects 0.000 description 1
229940044654 phenolsulfonic acid Drugs 0.000 description 1
150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
239000004584 polyacrylic acid Substances 0.000 description 1
229920000728 polyester Polymers 0.000 description 1
ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
238000002203 pretreatment Methods 0.000 description 1
239000004627 regenerated cellulose Substances 0.000 description 1
238000004513 sizing Methods 0.000 description 1
FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
229940048086 sodium pyrophosphate Drugs 0.000 description 1
HLWRUJAIJJEZDL-UHFFFAOYSA-M sodium;2-[2-[bis(carboxymethyl)amino]ethyl-(carboxymethyl)amino]acetate Chemical compound [Na+].OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC([O-])=O HLWRUJAIJJEZDL-UHFFFAOYSA-M 0.000 description 1
230000000087 stabilizing effect Effects 0.000 description 1
230000002311 subsequent effect Effects 0.000 description 1
230000019635 sulfation Effects 0.000 description 1
238000005670 sulfation reaction Methods 0.000 description 1
125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 1
125000001273 sulfonato group Chemical class [O-]S(*)(=O)=O 0.000 description 1
239000000725 suspension Substances 0.000 description 1
235000019818 tetrasodium diphosphate Nutrition 0.000 description 1
239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 description 1
150000004670 unsaturated fatty acids Chemical class 0.000 description 1
235000021122 unsaturated fatty acids Nutrition 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
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1026—Other features in bleaching processes
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
- 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
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)

CA 2188909 1995-10-30 1996-10-25 Procede de production de pate et de papier Abandoned CA2188909A1 (fr)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
DE19540359.2		1995-10-30
DE1995140359 DE19540359A1 (de)	1995-10-30	1995-10-30	Verfahren zur Herstellung von Papier und Zellstoff
DE19543480.3		1995-11-22
DE1995143480 DE19543480A1 (de)	1995-11-22	1995-11-22	Verfahren zur Herstellung von Papier und Zellstoff

Publications (1)

Publication Number	Publication Date
CA2188909A1 true CA2188909A1 (fr)	1997-05-01

Family

ID=26019915

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA 2188909 Abandoned CA2188909A1 (fr)	1995-10-30	1996-10-25	Procede de production de pate et de papier

Country Status (2)

Country	Link
EP (1)	EP0771902A1 (fr)
CA (1)	CA2188909A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US8980050B2 (en)	2012-08-20	2015-03-17	Celanese International Corporation	Methods for removing hemicellulose
US8986501B2 (en)	2012-08-20	2015-03-24	Celanese International Corporation	Methods for removing hemicellulose
CN115787334B (zh) *	2022-12-20	2023-12-29	东莞顺裕纸业有限公司	一种高强瓦楞芯纸的粗浆预处理方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH0571089A (ja) *	1991-08-14	1993-03-23	Mitsubishi Gas Chem Co Inc	機械パルプの漂白方法
DE4317075A1 (de) *	1993-05-21	1994-11-24	Bayer Ag	Lithiumhaltige Färbereihilfsmittel für Färberei und Druckerei
DE4418833A1 (de) *	1994-05-30	1995-12-07	Bayer Ag	Verfahren zur Vorbehandlung natürlicher Fasern

1996
- 1996-10-17 EP EP96116677A patent/EP0771902A1/fr not_active Withdrawn
- 1996-10-25 CA CA 2188909 patent/CA2188909A1/fr not_active Abandoned

Also Published As

Publication number	Publication date
EP0771902A1 (fr)	1997-05-07

Legal Events

Date	Code	Title	Description
2011-04-07	FZDE	Dead	Effective date: 20001025

Publication	Publication Date	Title
DE69912128T2 (de)	2004-06-17	Verfahren zur herstellung lignocellulosehaltiger pulpe aus nicht holzartigem material
CA2149648C (fr)	2000-09-19	Procede de delignification de pate contenant de la lignocellulose
CA2067295C (fr)	1996-07-23	Procede de blanchiment de matiere contenant de la lignocellulose
US3888727A (en)	1975-06-10	Treatment of lignocellulosic material in an alkaline pulping liquor containing anthraquinone sulphonic acid followed by oxygen delignification
NZ209471A (en)	1987-02-20	Treating cellulosic materials with microwaves and an oxidising agent
US7229525B2 (en)	2007-06-12	Methods to enhance pulp bleaching and delignification
EP0899373A1 (fr)	1999-03-03	Procédé pour le blanchiment durant la fabrication de pâte à papier contenant de la lignine
SE456168B (sv)	1988-09-12	Forfarande for ljushetsstabilisering av blekt lignininnehallande cellulosamassa
US3986922A (en)	1976-10-19	Method of deinking printed waste cellulosic stock
US5639348A (en)	1997-06-17	Bleaching compositions comprising sulfamates and borates or gluconates and processes
US7351764B2 (en)	2008-04-01	Methods to enhance brightness of pulp and optimize use of bleaching chemicals
US5580422A (en)	1996-12-03	Brightening color dyed wastepaper with a bleaching agent and a quaternary compound
CA1234655A (fr)	1988-04-05	Methode de blanchiment au peroxyde de matieres cellulosiques
US5560805A (en)	1996-10-01	Enhanced decolorization of waste paper with selected amines
DE19528843A1 (de)	1997-02-06	Verfahren zur Stabilisierung von alkalischen peroxidenthaltenden Bleichflotten für die Bleiche von Zellstoffen und anderen Faserstoffen
EP0464110B1 (fr)	1994-06-08	Procede de blanchiment servant a la production de pulpes tres claires
USH1690H (en)	1997-11-04	Process for bleaching kraft pulp
US2527563A (en)	1950-10-31	Method of bleaching semichemical pulps
CA2149649C (fr)	2000-09-19	Procede de blanchiment de pate contenant de la lignocellulose
CA1078558A (fr)	1980-06-03	Production d'une pate mecanique blanchie, a grande resistance et plus nette de coloration anormale, cedant peu de substances consommatrices d'oxygene
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