CA1274657A - Methode de production et de blanchiment de la pate a rendement eleve - Google Patents

Methode de production et de blanchiment de la pate a rendement eleve

Info

Publication number: CA1274657A
Authority: CA; Canada
Prior art keywords: chips; impregnation; per liter; peroxide; impregnation solution
Prior art date: 1985-09-20
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.): Expired

Application number

CA000518592A

Other languages

English (en)

Inventor

Harry Douglas Wilder

Victor Michael Gentile Jr.

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.)

Kimberly Clark Worldwide Inc

Original Assignee

Scott Paper Co

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.)

1985-09-20

Filing date

1986-09-18

Publication date

1990-10-02

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25113415&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA1274657(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1986-09-18 Application filed by Scott Paper Co filed Critical Scott Paper Co

1990-10-02 Application granted granted Critical

1990-10-02 Publication of CA1274657A publication Critical patent/CA1274657A/fr

Status Expired legal-status Critical Current

Links

238000000034 method Methods 0.000 title claims description 118
230000008569 process Effects 0.000 title claims description 98
238000004537 pulping Methods 0.000 title claims description 11
238000004061 bleaching Methods 0.000 title description 63
150000002978 peroxides Chemical class 0.000 claims abstract description 147
238000007670 refining Methods 0.000 claims abstract description 83
230000000087 stabilizing effect Effects 0.000 claims abstract description 34
239000003381 stabilizer Substances 0.000 claims abstract description 24
244000144992 flock Species 0.000 claims abstract description 20
238000005470 impregnation Methods 0.000 claims description 231
239000000243 solution Substances 0.000 claims description 201
MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 82
QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical group OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims description 47
229960003330 pentetic acid Drugs 0.000 claims description 47
239000000126 substance Substances 0.000 claims description 46
239000002738 chelating agent Substances 0.000 claims description 36
239000004115 Sodium Silicate Substances 0.000 claims description 35
NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 35
229910052911 sodium silicate Inorganic materials 0.000 claims description 35
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
239000013522 chelant Substances 0.000 claims description 27
VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 24
239000011777 magnesium Substances 0.000 claims description 20
FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 19
229910052749 magnesium Inorganic materials 0.000 claims description 19
229910052751 metal Inorganic materials 0.000 claims description 17
239000002184 metal Substances 0.000 claims description 17
238000000354 decomposition reaction Methods 0.000 claims description 15
URDCARMUOSMFFI-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(2-hydroxyethyl)amino]acetic acid Chemical compound OCCN(CC(O)=O)CCN(CC(O)=O)CC(O)=O URDCARMUOSMFFI-UHFFFAOYSA-N 0.000 claims description 14
KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 14
229960001484 edetic acid Drugs 0.000 claims description 14
159000000003 magnesium salts Chemical class 0.000 claims description 14
235000019832 sodium triphosphate Nutrition 0.000 claims description 14
239000000356 contaminant Substances 0.000 claims description 13
229940042400 direct acting antivirals phosphonic acid derivative Drugs 0.000 claims description 13
150000003007 phosphonic acid derivatives Chemical class 0.000 claims description 13
150000004760 silicates Chemical class 0.000 claims description 13
241000796765 Gmelina <amphipod> Species 0.000 claims description 12
239000000377 silicon dioxide Substances 0.000 claims description 12
235000012239 silicon dioxide Nutrition 0.000 claims description 12
235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 11
241000018646 Pinus brutia Species 0.000 claims description 11
235000011613 Pinus brutia Nutrition 0.000 claims description 11
241000183024 Populus tremula Species 0.000 claims description 11
229910021645 metal ion Inorganic materials 0.000 claims description 11
BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 10
239000011121 hardwood Substances 0.000 claims description 10
239000011122 softwood Substances 0.000 claims description 8
239000012978 lignocellulosic material Substances 0.000 claims description 7
239000000203 mixture Substances 0.000 claims description 7
239000002244 precipitate Substances 0.000 claims description 6
241000609240 Ambelania acida Species 0.000 claims description 5
239000010905 bagasse Substances 0.000 claims description 5
239000010902 straw Substances 0.000 claims description 5
235000007173 Abies balsamea Nutrition 0.000 claims description 4
244000283070 Abies balsamea Species 0.000 claims description 4
241000218657 Picea Species 0.000 claims description 2
MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 claims 12
244000166124 Eucalyptus globulus Species 0.000 claims 4
239000000835 fiber Substances 0.000 abstract description 30
230000015572 biosynthetic process Effects 0.000 abstract description 6
238000011065 in-situ storage Methods 0.000 abstract description 6
238000002203 pretreatment Methods 0.000 abstract 2
229920001131 Pulp (paper) Polymers 0.000 abstract 1
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 69
CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 42
239000002023 wood Substances 0.000 description 22
235000019341 magnesium sulphate Nutrition 0.000 description 21
229910052943 magnesium sulfate Inorganic materials 0.000 description 19
RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 18
238000010411 cooking Methods 0.000 description 18
238000011282 treatment Methods 0.000 description 15
238000006277 sulfonation reaction Methods 0.000 description 14
239000002994 raw material Substances 0.000 description 12
229920005610 lignin Polymers 0.000 description 11
LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 10
102100031260 Acyl-coenzyme A thioesterase THEM4 Human genes 0.000 description 9
101000638510 Homo sapiens Acyl-coenzyme A thioesterase THEM4 Proteins 0.000 description 9
239000007864 aqueous solution Substances 0.000 description 9
GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 9
241000219927 Eucalyptus Species 0.000 description 7
JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 7
239000000306 component Substances 0.000 description 7
230000006835 compression Effects 0.000 description 7
238000007906 compression Methods 0.000 description 7
229910001425 magnesium ion Inorganic materials 0.000 description 7
VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
238000010998 test method Methods 0.000 description 6
235000005018 Pinus echinata Nutrition 0.000 description 5
241001236219 Pinus echinata Species 0.000 description 5
235000017339 Pinus palustris Nutrition 0.000 description 5
DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 5
238000000926 separation method Methods 0.000 description 5
235000010267 sodium hydrogen sulphite Nutrition 0.000 description 5
235000010265 sodium sulphite Nutrition 0.000 description 5
238000012360 testing method Methods 0.000 description 5
DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 4
239000007844 bleaching agent Substances 0.000 description 4
229910052681 coesite Inorganic materials 0.000 description 4
229910052906 cristobalite Inorganic materials 0.000 description 4
239000007788 liquid Substances 0.000 description 4
239000011734 sodium Substances 0.000 description 4
229910052708 sodium Inorganic materials 0.000 description 4
229910052682 stishovite Inorganic materials 0.000 description 4
229910052905 tridymite Inorganic materials 0.000 description 4
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
230000008901 benefit Effects 0.000 description 3
230000021523 carboxylation Effects 0.000 description 3
238000006473 carboxylation reaction Methods 0.000 description 3
229910052802 copper Inorganic materials 0.000 description 3
239000010949 copper Substances 0.000 description 3
230000002939 deleterious effect Effects 0.000 description 3
239000001257 hydrogen Substances 0.000 description 3
229910052739 hydrogen Inorganic materials 0.000 description 3
229910052742 iron Inorganic materials 0.000 description 3
WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 3
238000001556 precipitation Methods 0.000 description 3
238000002360 preparation method Methods 0.000 description 3
239000013055 pulp slurry Substances 0.000 description 3
241000894007 species Species 0.000 description 3
239000002699 waste material Substances 0.000 description 3
241000006121 Eucalyptus regnans Species 0.000 description 2
TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
239000003513 alkali Substances 0.000 description 2
150000007942 carboxylates Chemical group 0.000 description 2
238000006243 chemical reaction Methods 0.000 description 2
150000001875 compounds Chemical class 0.000 description 2
239000013256 coordination polymer Substances 0.000 description 2
230000000694 effects Effects 0.000 description 2
239000002657 fibrous material Substances 0.000 description 2
XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
238000004519 manufacturing process Methods 0.000 description 2
239000000463 material Substances 0.000 description 2
150000002739 metals Chemical class 0.000 description 2
238000002156 mixing Methods 0.000 description 2
239000007800 oxidant agent Substances 0.000 description 2
230000000717 retained effect Effects 0.000 description 2
150000003839 salts Chemical class 0.000 description 2
229920006395 saturated elastomer Polymers 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
235000018185 Betula X alpestris Nutrition 0.000 description 1
235000018212 Betula X uliginosa Nutrition 0.000 description 1
241001052209 Cylinder Species 0.000 description 1
MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
229910002651 NO3 Inorganic materials 0.000 description 1
NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
229920002472 Starch Polymers 0.000 description 1
239000002253 acid Substances 0.000 description 1
239000012670 alkaline solution Substances 0.000 description 1
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
239000002585 base Substances 0.000 description 1
239000001913 cellulose Substances 0.000 description 1
229920002678 cellulose Polymers 0.000 description 1
230000008859 change Effects 0.000 description 1
239000003638 chemical reducing agent Substances 0.000 description 1
239000008139 complexing agent Substances 0.000 description 1
238000011109 contamination Methods 0.000 description 1
229910001882 dioxygen Inorganic materials 0.000 description 1
238000005265 energy consumption Methods 0.000 description 1
239000012530 fluid Substances 0.000 description 1
238000013467 fragmentation Methods 0.000 description 1
238000006062 fragmentation reaction Methods 0.000 description 1
125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
238000009897 hydrogen peroxide bleaching Methods 0.000 description 1
230000002209 hydrophobic effect Effects 0.000 description 1
230000000415 inactivating effect Effects 0.000 description 1
230000002779 inactivation Effects 0.000 description 1
230000003993 interaction Effects 0.000 description 1
150000002500 ions Chemical class 0.000 description 1
230000002427 irreversible effect Effects 0.000 description 1
ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
239000001095 magnesium carbonate Substances 0.000 description 1
229910000021 magnesium carbonate Inorganic materials 0.000 description 1
229910001629 magnesium chloride Inorganic materials 0.000 description 1
229910052919 magnesium silicate Inorganic materials 0.000 description 1
WRUGWIBCXHJTDG-UHFFFAOYSA-L magnesium sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Mg+2].[O-]S([O-])(=O)=O WRUGWIBCXHJTDG-UHFFFAOYSA-L 0.000 description 1
229940061634 magnesium sulfate heptahydrate Drugs 0.000 description 1
238000005259 measurement Methods 0.000 description 1
229910052760 oxygen Inorganic materials 0.000 description 1
239000001301 oxygen Substances 0.000 description 1
238000010979 pH adjustment Methods 0.000 description 1
230000020477 pH reduction Effects 0.000 description 1
239000002245 particle Substances 0.000 description 1
230000000149 penetrating effect Effects 0.000 description 1
125000000864 peroxy group Chemical group O(O*)* 0.000 description 1
239000011148 porous material Substances 0.000 description 1
239000000047 product Substances 0.000 description 1
238000010926 purge Methods 0.000 description 1
230000009467 reduction Effects 0.000 description 1
239000002002 slurry Substances 0.000 description 1
-1 sodium hydrosulfite Chemical class 0.000 description 1
159000000000 sodium salts Chemical class 0.000 description 1
239000008107 starch Substances 0.000 description 1
235000019698 starch Nutrition 0.000 description 1
238000010025 steaming Methods 0.000 description 1
BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 1
150000003464 sulfur compounds Chemical class 0.000 description 1
238000007669 thermal treatment Methods 0.000 description 1
230000008719 thickening Effects 0.000 description 1
238000004448 titration Methods 0.000 description 1

Classifications

- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/14—Disintegrating in mills
- D21B1/16—Disintegrating in mills in the presence of chemical agents
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
- D21B1/021—Pretreatment of the raw materials by chemical or physical means by chemical means

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
General Chemical & Material Sciences (AREA)
Mechanical Engineering (AREA)
Life Sciences & Earth Sciences (AREA)
Wood Science & Technology (AREA)
Paper (AREA)

CA000518592A 1985-09-20 1986-09-18 Methode de production et de blanchiment de la pate a rendement eleve Expired CA1274657A (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US77845785A	1985-09-20	1985-09-20
US778,457		1985-09-20

Publications (1)

Publication Number	Publication Date
CA1274657A true CA1274657A (fr)	1990-10-02

Family

ID=25113415

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA000518592A Expired CA1274657A (fr)	1985-09-20	1986-09-18	Methode de production et de blanchiment de la pate a rendement eleve

Country Status (10)

Country	Link
EP (1)	EP0239583B2 (fr)
AR (1)	AR243622A1 (fr)
AU (3)	AU605745B2 (fr)
BR (1)	BR8606875A (fr)
CA (1)	CA1274657A (fr)
DE (1)	DE3676490D1 (fr)
ES (1)	ES2002755A6 (fr)
MX (1)	MX174399B (fr)
PT (1)	PT83406B (fr)
WO (1)	WO1987001746A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE458690B (sv) *	1986-11-06	1989-04-24	Sunds Defibrator	Saett att framstaella mekanisk massa fraan lignocellulosahaltigt material i styckeform med en laengd i fiberriktningen av minst 200 mm
CA2057231A1 (fr) *	1991-01-07	1992-07-08	Ulrike Tschirner	Methode pour le pretraitement de matieres lignocellulosiques avant le depulpage alkalin a haut rendement au peroxyde
FR2672315B1 (fr) *	1991-01-31	1996-06-07	Hoechst France	Nouveau procede de raffinage de la pate a papier.
JP5091154B2 (ja) *	2005-12-02	2012-12-05	アクゾノーベルナムローゼフェンノートシャップ	高収率パルプの製造方法
US8268122B2 (en)	2005-12-02	2012-09-18	Akzo Nobel N.V.	Process of producing high-yield pulp
US9273270B2 (en)	2014-02-20	2016-03-01	Church & Dwight Co., Inc.	Unit dose cleaning products for delivering a peroxide-containing bleaching agent

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE496197C (de) *	1928-05-15	1930-04-17	Carl G Schwalbe Dr	Verfahren zur Herstellung von Zellstoff aus verholzten Fasern
CA895757A (en) *	1970-04-03	1972-03-21	Macmillan Bloedel Limited	Single-stage soda-oxygen pulping
US4187141A (en) *	1975-02-24	1980-02-05	Alf Societe Anonyme	Method of producing bleached mechanical pulp
SE436368B (sv) *	1979-01-12	1984-12-03	Sunds Defibrator	Sett att framstella blekta, mekaniska, kemimekaniska och halvkemiska massor av lignocellulosahaltiga fibermaterial
JPS63402A (ja) *	1986-06-18	1988-01-05	Toyota Motor Corp	焼結鍛造用原料粉末およびその粉末を使用した焼結鍛造法

1986
- 1986-08-13 BR BR8606875A patent/BR8606875A/pt not_active IP Right Cessation
- 1986-08-13 WO PCT/US1986/001659 patent/WO1987001746A1/fr not_active Ceased
- 1986-08-13 AU AU62253/86A patent/AU605745B2/en not_active Ceased
- 1986-08-13 DE DE8686905113T patent/DE3676490D1/de not_active Expired - Lifetime
- 1986-08-13 EP EP19860905113 patent/EP0239583B2/fr not_active Expired - Lifetime
- 1986-09-18 CA CA000518592A patent/CA1274657A/fr not_active Expired
- 1986-09-19 AR AR30530786A patent/AR243622A1/es active
- 1986-09-19 ES ES8602010A patent/ES2002755A6/es not_active Expired
- 1986-09-19 MX MX377486A patent/MX174399B/es unknown
- 1986-09-19 PT PT8340686A patent/PT83406B/pt not_active IP Right Cessation
1990
- 1990-11-14 AU AU66582/90A patent/AU6658290A/en not_active Abandoned
1993
- 1993-05-26 AU AU39844/93A patent/AU663781B2/en not_active Ceased

Also Published As

Publication number	Publication date
AU3984493A (en)	1993-08-19
EP0239583A4 (fr)	1988-03-22
MX174399B (es)	1994-05-13
PT83406A (en)	1986-10-01
BR8606875A (pt)	1987-11-03
ES2002755A6 (es)	1988-10-01
AR243622A1 (es)	1993-08-31
EP0239583B1 (fr)	1991-01-02
AU663781B2 (en)	1995-10-19
AU605745B2 (en)	1991-01-24
WO1987001746A1 (fr)	1987-03-26
PT83406B (pt)	1989-05-12
AU6225386A (en)	1987-04-07
AU6658290A (en)	1991-01-31
DE3676490D1 (de)	1991-02-07
EP0239583A1 (fr)	1987-10-07
EP0239583B2 (fr)	1994-01-12

Legal Events

Date	Code	Title	Description
2004-10-04	MKLA	Lapsed

Publication	Publication Date	Title
US5002635A (en)	1991-03-26	Method for producing pulp using pre-treatment with stabilizers and refining
US4599138A (en)	1986-07-08	Process for pretreating particulate lignocellulosic material to remove heavy metals
US6743332B2 (en)	2004-06-01	High temperature peroxide bleaching of mechanical pulps
US4486267A (en)	1984-12-04	Chemithermomechanical pulping process employing separate alkali and sulfite treatments
US4576609A (en)	1986-03-18	Process for the treatment of cellulosic materials with oxidizing agents and microwaves
US4798651A (en)	1989-01-17	Process for preparing pulp for paper making
EP0172135A1 (fr)	1986-02-19	Méthode, procédé et appareil pour la conversion du bois, des résidus de bois, des fibres végétales et de la biomasse en pâte
US4849053A (en)	1989-07-18	Method for producing pulp using pre-treatment with stabilizers and defibration
FI84634B (fi)	1991-09-13	Foerfarande foer framstaellning av kemimekanisk eller semikemisk fibermassa i en en-fas impregneringsprocess.
NO300929B1 (no)	1997-08-18	Fremgangsmåte for bleking av lignocellulosematerialer
FI83794B (fi)	1991-05-15	Foerfarande foer framstaellning av kemimekanisk eller semikemisk fibermassa i en tvao-fas impregneringsprocess.
US4116758A (en)	1978-09-26	Method of producing high yield chemimechanical pulps
EP0501059A1 (fr)	1992-09-02	Procédé de lessivage par explosion à la vapeur pour faire du papier
EP0494519A1 (fr)	1992-07-15	Procédé de lessivage à haut rendement
JP2588495B2 (ja)	1997-03-05	製紙用高収率高漂白度パルプの製造方法
CA1274657A (fr)	1990-10-02	Methode de production et de blanchiment de la pate a rendement eleve
CA1173604A (fr)	1984-09-04	Mode de production de pate mecanico-chimique
CA2453131C (fr)	2011-09-06	Procedes de preparation des pates mecaniques ayant un degre de blancheur eleve
WO1992012289A1 (fr)	1992-07-23	Procede de decoloration de pulpe lignocellulosique sans utilisation de chlore
CA1096559A (fr)	1981-03-03	Traduction non-disponible
JP2003027385A (ja)	2003-01-29	機械パルプの製造方法
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JPH0114357B2 (fr)	1989-03-10
Scott et al.	1996	Biosulfite pulping using Ceriporiopsis subvermispora
Mašura	1982	Alkaline degradation of spruce and beech wood