CA2601926C - Pulp and paper having increased brightness - Google Patents

Pulp and paper having increased brightness Download PDF

Info

Publication number: CA2601926C
Authority: CA; Canada
Prior art keywords: oba; pulp; fibers; contacting; brightness
Prior art date: 2005-02-19
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 - Fee Related

Application number

CA2601926A

Other languages

English (en)

French (fr)

Other versions

CA2601926A1 (en

Inventor

Xuan Truong Nguyen

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.)

International Paper Co

Original Assignee

International 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.)

2005-02-19

Filing date

2006-02-21

Publication date

2011-07-19

2006-02-21 Application filed by International Paper Co filed Critical International Paper Co

2006-08-24 Publication of CA2601926A1 publication Critical patent/CA2601926A1/en

2011-07-19 Application granted granted Critical

2011-07-19 Publication of CA2601926C publication Critical patent/CA2601926C/en

2026-02-21 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Links

230000001965 increasing effect Effects 0.000 title description 16
239000000835 fiber Substances 0.000 claims abstract description 89
238000000034 method Methods 0.000 claims abstract description 72
239000000123 paper Substances 0.000 claims abstract description 33
238000004061 bleaching Methods 0.000 claims abstract description 18
239000002655 kraft paper Substances 0.000 claims abstract description 18
239000000758 substrate Substances 0.000 claims abstract description 17
230000003287 optical effect Effects 0.000 claims abstract description 14
239000000203 mixture Substances 0.000 claims abstract description 9
238000004519 manufacturing process Methods 0.000 claims abstract description 7
238000005406 washing Methods 0.000 claims abstract description 6
ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 5
239000007844 bleaching agent Substances 0.000 claims abstract description 5
239000000460 chlorine Substances 0.000 claims abstract description 5
229910052801 chlorine Inorganic materials 0.000 claims abstract description 5
239000011121 hardwood Substances 0.000 claims description 31
230000008569 process Effects 0.000 claims description 26
239000011122 softwood Substances 0.000 claims description 25
238000007670 refining Methods 0.000 claims description 21
230000014759 maintenance of location Effects 0.000 claims description 14
239000003795 chemical substances by application Substances 0.000 claims description 5
238000005282 brightening Methods 0.000 claims description 4
238000003860 storage Methods 0.000 claims description 4
238000002474 experimental method Methods 0.000 description 14
238000007796 conventional method Methods 0.000 description 12
229940037003 alum Drugs 0.000 description 11
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
239000000047 product Substances 0.000 description 10
239000000945 filler Substances 0.000 description 9
239000007787 solid Substances 0.000 description 9
239000000243 solution Substances 0.000 description 9
210000002421 cell wall Anatomy 0.000 description 7
239000003086 colorant Substances 0.000 description 6
238000001228 spectrum Methods 0.000 description 6
239000000126 substance Substances 0.000 description 6
241000196324 Embryophyta Species 0.000 description 5
239000000975 dye Substances 0.000 description 5
238000000605 extraction Methods 0.000 description 5
238000002156 mixing Methods 0.000 description 5
230000009467 reduction Effects 0.000 description 5
238000001237 Raman spectrum Methods 0.000 description 4
NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
238000009616 inductively coupled plasma Methods 0.000 description 4
239000000049 pigment Substances 0.000 description 4
-1 retention aids Substances 0.000 description 4
229910052717 sulfur Inorganic materials 0.000 description 4
239000011593 sulfur Substances 0.000 description 4
239000003643 water by type Substances 0.000 description 4
229920003043 Cellulose fiber Polymers 0.000 description 3
OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
238000004458 analytical method Methods 0.000 description 3
239000000284 extract Substances 0.000 description 3
239000011087 paperboard Substances 0.000 description 3
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
244000025254 Cannabis sativa Species 0.000 description 2
235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 2
235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 2
MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
238000001069 Raman spectroscopy Methods 0.000 description 2
230000009471 action Effects 0.000 description 2
239000000654 additive Substances 0.000 description 2
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
239000007853 buffer solution Substances 0.000 description 2
235000009120 camo Nutrition 0.000 description 2
229920002678 cellulose Polymers 0.000 description 2
239000001913 cellulose Substances 0.000 description 2
235000005607 chanvre indien Nutrition 0.000 description 2
230000003247 decreasing effect Effects 0.000 description 2
239000008367 deionised water Substances 0.000 description 2
229910021641 deionized water Inorganic materials 0.000 description 2
OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
230000000694 effects Effects 0.000 description 2
238000001704 evaporation Methods 0.000 description 2
230000008020 evaporation Effects 0.000 description 2
239000007850 fluorescent dye Substances 0.000 description 2
239000006081 fluorescent whitening agent Substances 0.000 description 2
239000011487 hemp Substances 0.000 description 2
238000004128 high performance liquid chromatography Methods 0.000 description 2
229910052500 inorganic mineral Inorganic materials 0.000 description 2
238000000386 microscopy Methods 0.000 description 2
239000011707 mineral Substances 0.000 description 2
239000001301 oxygen Substances 0.000 description 2
229910052760 oxygen Inorganic materials 0.000 description 2
238000012805 post-processing Methods 0.000 description 2
230000002829 reductive effect Effects 0.000 description 2
229920005989 resin Polymers 0.000 description 2
239000011347 resin Substances 0.000 description 2
239000002904 solvent Substances 0.000 description 2
241000894007 species Species 0.000 description 2
238000012956 testing procedure Methods 0.000 description 2
125000003363 1,3,5-triazinyl group Chemical group N1=C(N=CN=C1)* 0.000 description 1
ZMLPKJYZRQZLDA-PHEQNACWSA-N 1-[(e)-2-phenylethenyl]-4-[4-[(e)-2-phenylethenyl]phenyl]benzene Chemical group C=1C=CC=CC=1/C=C/C(C=C1)=CC=C1C(C=C1)=CC=C1\C=C\C1=CC=CC=C1 ZMLPKJYZRQZLDA-PHEQNACWSA-N 0.000 description 1
102100031260 Acyl-coenzyme A thioesterase THEM4 Human genes 0.000 description 1
244000198134 Agave sisalana Species 0.000 description 1
239000005995 Aluminium silicate Substances 0.000 description 1
239000004155 Chlorine dioxide Substances 0.000 description 1
240000000491 Corchorus aestuans Species 0.000 description 1
235000011777 Corchorus aestuans Nutrition 0.000 description 1
235000010862 Corchorus capsularis Nutrition 0.000 description 1
REJHVSOVQBJEBF-UHFFFAOYSA-N DSD-acid Natural products OS(=O)(=O)C1=CC(N)=CC=C1C=CC1=CC=C(N)C=C1S(O)(=O)=O REJHVSOVQBJEBF-UHFFFAOYSA-N 0.000 description 1
229920000103 Expandable microsphere Polymers 0.000 description 1
240000000797 Hibiscus cannabinus Species 0.000 description 1
101000638510 Homo sapiens Acyl-coenzyme A thioesterase THEM4 Proteins 0.000 description 1
VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
241000408495 Iton Species 0.000 description 1
240000006240 Linum usitatissimum Species 0.000 description 1
235000004431 Linum usitatissimum Nutrition 0.000 description 1
240000000907 Musa textilis Species 0.000 description 1
GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
238000003841 Raman measurement Methods 0.000 description 1
229920002472 Starch Polymers 0.000 description 1
235000005811 Viola adunca Nutrition 0.000 description 1
240000009038 Viola odorata Species 0.000 description 1
235000013487 Viola odorata Nutrition 0.000 description 1
235000002254 Viola papilionacea Nutrition 0.000 description 1
238000002835 absorbance Methods 0.000 description 1
230000002411 adverse Effects 0.000 description 1
230000004075 alteration Effects 0.000 description 1
235000012211 aluminium silicate Nutrition 0.000 description 1
230000008901 benefit Effects 0.000 description 1
239000001045 blue dye Substances 0.000 description 1
229910000019 calcium carbonate Inorganic materials 0.000 description 1
230000003197 catalytic effect Effects 0.000 description 1
125000002091 cationic group Chemical group 0.000 description 1
230000008859 change Effects 0.000 description 1
235000019398 chlorine dioxide Nutrition 0.000 description 1
239000011248 coating agent Substances 0.000 description 1
238000000576 coating method Methods 0.000 description 1
238000004040 coloring Methods 0.000 description 1
150000001875 compounds Chemical class 0.000 description 1
230000000593 degrading effect Effects 0.000 description 1
238000013461 design Methods 0.000 description 1
239000000982 direct dye Substances 0.000 description 1
239000002270 dispersing agent Substances 0.000 description 1
238000011143 downstream manufacturing Methods 0.000 description 1
238000005516 engineering process Methods 0.000 description 1
230000002708 enhancing effect Effects 0.000 description 1
230000005284 excitation Effects 0.000 description 1
238000013401 experimental design Methods 0.000 description 1
239000000706 filtrate Substances 0.000 description 1
239000007789 gas Substances 0.000 description 1
230000036541 health Effects 0.000 description 1
238000010438 heat treatment Methods 0.000 description 1
ARRNBPCNZJXHRJ-UHFFFAOYSA-M hydron;tetrabutylazanium;phosphate Chemical compound OP(O)([O-])=O.CCCC[N+](CCCC)(CCCC)CCCC ARRNBPCNZJXHRJ-UHFFFAOYSA-M 0.000 description 1
230000006872 improvement Effects 0.000 description 1
238000002347 injection Methods 0.000 description 1
239000007924 injection Substances 0.000 description 1
239000001023 inorganic pigment Substances 0.000 description 1
230000003993 interaction Effects 0.000 description 1
150000002500 ions Chemical class 0.000 description 1
NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
229920005610 lignin Polymers 0.000 description 1
238000012986 modification Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
229910017604 nitric acid Inorganic materials 0.000 description 1
229910052757 nitrogen Inorganic materials 0.000 description 1
239000012860 organic pigment Substances 0.000 description 1
230000008520 organization Effects 0.000 description 1
238000010979 pH adjustment Methods 0.000 description 1
230000035515 penetration Effects 0.000 description 1
150000002978 peroxides Chemical class 0.000 description 1
239000003504 photosensitizing agent Substances 0.000 description 1
239000004033 plastic Substances 0.000 description 1
229920000642 polymer Polymers 0.000 description 1
238000010926 purge Methods 0.000 description 1
230000000717 retained effect Effects 0.000 description 1
230000002441 reversible effect Effects 0.000 description 1
238000000926 separation method Methods 0.000 description 1
238000004513 sizing Methods 0.000 description 1
238000004611 spectroscopical analysis Methods 0.000 description 1
239000008107 starch Substances 0.000 description 1
235000019698 starch Nutrition 0.000 description 1
PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical class C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
238000005728 strengthening Methods 0.000 description 1
125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 1
239000000454 talc Substances 0.000 description 1
229910052623 talc Inorganic materials 0.000 description 1
238000012360 testing method Methods 0.000 description 1
230000000930 thermomechanical effect Effects 0.000 description 1
239000002699 waste material Substances 0.000 description 1
239000002023 wood Substances 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
- D21C9/001—Modification of pulp properties
- D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
- 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
- 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
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/30—Luminescent or fluorescent substances, e.g. for optical bleaching

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
General Chemical & Material Sciences (AREA)
Paper (AREA)
Polishing Bodies And Polishing Tools (AREA)

CA2601926A 2005-02-19 2006-02-21 Pulp and paper having increased brightness Expired - Fee Related CA2601926C (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
US65471205P	2005-02-19	2005-02-19
US60/654,712		2005-02-19
PCT/US2006/006011 WO2006089274A1 (en)	2005-02-19	2006-02-21	Pulp and paper having increased brightness

Publications (2)

Publication Number	Publication Date
CA2601926A1 CA2601926A1 (en)	2006-08-24
CA2601926C true CA2601926C (en)	2011-07-19

Family

ID=36617346

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA2601926A Expired - Fee Related CA2601926C (en)	2005-02-19	2006-02-21	Pulp and paper having increased brightness

Country Status (9)

Country	Link
US (1)	US20060185808A1 (pt)
EP (1)	EP1848856A1 (pt)
CN (1)	CN101128630A (pt)
AU (1)	AU2006213983B2 (pt)
BR (1)	BRPI0607171A2 (pt)
CA (1)	CA2601926C (pt)
NZ (1)	NZ561652A (pt)
RU (2)	RU2386738C2 (pt)
WO (1)	WO2006089274A1 (pt)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6866906B2 (en)	2000-01-26	2005-03-15	International Paper Company	Cut resistant paper and paper articles and method for making same
ES2347993T3 (es)	2002-09-13	2010-11-26	International Paper Company	Papel con rigidez y cuerpo mejorados y método para fabricarlo campo de aplicación de la invención.
US7638016B2 (en) *	2005-02-19	2009-12-29	International Paper Company	Method for treating kraft pulp with optical brighteners after chlorine bleaching to increase brightness
CA2600801C (en)	2005-03-11	2012-07-10	International Paper Company	Compositions containing expandable microspheres and an ionic compound, as well as methods of making and using the same
EP1977040A2 (en) *	2006-01-25	2008-10-08	Buckman Laboratories International, Inc.	Papermaking processes using coagulants and optical brighteners
PT1996762T (pt) *	2006-03-13	2017-01-31	Fpinnovations	Branqueamento de polpa com dióxido de cloro quase neutro
US7967948B2 (en) *	2006-06-02	2011-06-28	International Paper Company	Process for non-chlorine oxidative bleaching of mechanical pulp in the presence of optical brightening agents
US20080173420A1 (en) *	2006-12-11	2008-07-24	Jay Chen Song	Paper surface sizing composition, sized paper, and method for sizing paper
CA2682924A1 (en) *	2007-04-05	2008-10-16	Akzo Nobel N.V.	Process for improving optical properties of paper
EP2148700B1 (en)	2007-05-23	2015-04-29	International Paper Company	Compositions and particles containing cellulosic fibers and stabilized- and/or activated- urease inhibitors, as well as methods of making and using the same
US7758934B2 (en)	2007-07-13	2010-07-20	Georgia-Pacific Consumer Products Lp	Dual mode ink jet paper
US8613834B2 (en)	2008-04-03	2013-12-24	Basf Se	Paper coating or binding formulations and methods of making and using same
FI20085345A7 (fi) *	2008-04-22	2009-10-23	Kemira Oyj	Menetelmä valon aikaansaaman ligniinipitoisen materiaalin kellertymisen vähentämiseksi
CN102137878B (zh)	2008-08-28	2014-06-18	国际纸业公司	可膨胀微球及其制造和使用方法
EP2192230B2 (en)	2008-11-27	2020-01-01	Clariant Finance (BVI) Limited	Optical brightening compositions for high quality inkjet printing
US20100129553A1 (en) *	2008-11-27	2010-05-27	International Paper Company	Optical Brightening Compositions For High Quality Inkjet Printing
ES2752755T3 (es)	2009-05-28	2020-04-06	Gp Cellulose Gmbh	Celulosa modificada de fibra química kraft y métodos de producción y uso de la misma
FI123289B (fi) *	2009-11-24	2013-01-31	Upm Kymmene Corp	Menetelmä nanofibrilloidun selluloosamassan valmistamiseksi ja massan käyttö paperinvalmistuksessa tai nanofibrilloiduissa selluloosakomposiiteissa
US8652593B2 (en) *	2009-12-17	2014-02-18	International Paper Company	Printable substrates with improved brightness from OBAs in presence of multivalent metal salts
US8574690B2 (en) *	2009-12-17	2013-11-05	International Paper Company	Printable substrates with improved dry time and acceptable print density by using monovalent salts
IN2012DN06316A (pt) *	2009-12-29	2015-10-02	Internat Paper Do Brasil Ltda
WO2012018749A1 (en) *	2010-08-03	2012-02-09	International Paper Company	Fire retardant treated fluff pulp web and process for making same
US8663427B2 (en)	2011-04-07	2014-03-04	International Paper Company	Addition of endothermic fire retardants to provide near neutral pH pulp fiber webs
CN101962921B (zh) *	2010-09-21	2012-07-04	天津科技大学	一种提高荧光增白剂在含高得率浆纸中效率的方法
AR088787A1 (es) *	2011-08-30	2014-07-10	Cargill Inc	Composicion de pulpa
AR087707A1 (es) *	2011-08-30	2014-04-09	Cargill Inc	Articulos manufacturados a partir de una composicion de pulpa
EP2781648B1 (en)	2013-03-21	2016-01-06	Clariant International Ltd.	Optical brightening agents for high quality ink-jet printing
AU2018387075B2 (en)	2017-12-22	2022-09-29	Archroma Ip Gmbh	Optical brightener for whitening paper
EP3623392B1 (en)	2018-09-14	2023-07-19	Archroma IP GmbH	Optically brightened latexes

Family Cites Families (15)

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Publication number	Priority date	Publication date	Assignee	Title
US4187141A (en) *	1975-02-24	1980-02-05	Alf Societe Anonyme	Method of producing bleached mechanical pulp
US4699619A (en) *	1984-08-31	1987-10-13	Kimberly-Clark Corporation	Absorbent structure designed for absorbing body fluids
US5002635A (en) *	1985-09-20	1991-03-26	Scott Paper Company	Method for producing pulp using pre-treatment with stabilizers and refining
FI87372C (fi) *	1989-03-30	1992-12-28	Genencor Int Europ	Foerfarande foer framstaellning av fluffmassa med foerbaettrad rivbarhet
SU1714016A1 (ru) *	1990-05-22	1992-02-23	Центральный научно-исследовательский институт бумаги	Способ обработки волокнистой массы при изготовлении бумаги
US5389201A (en) *	1992-02-28	1995-02-14	International Paper Company	Bleaching of kraft cellulosic pulp employing ozone and reduced consumption of chlorine containing bleaching agent
DE4230655A1 (de) *	1992-09-14	1994-03-17	Ciba Geigy	Verfahren zur Verbesserung von Weißgrad, Helligkeit und Farbort von Faserstoffen
US5616280A (en) *	1993-08-25	1997-04-01	Burlington Chemical Co., Inc.	Bleaching composition
US6379497B1 (en) *	1996-09-20	2002-04-30	Fort James Corporation	Bulk enhanced paperboard and shaped products made therefrom
WO1998042685A1 (en) *	1997-03-25	1998-10-01	Ciba Specialty Chemicals Holding Inc.	Fluorescent whitening agents
EP0899373A1 (en) *	1997-08-28	1999-03-03	Ciba SC Holding AG	Method of whitening lignin-containing pulp during manufacture
NZ331438A (en) *	1997-09-16	2000-01-28	Ciba Sc Holding Ag	A method of increasing the whiteness of paper by using a formulation containing a swellale layered silicate and an optical brightener 4,4-bis-(triazinylamino)-stilbene-2,2-disulphonic acid
FI112958B (fi) *	1997-12-19	2004-02-13	Kemira Oyj	Menetelmä kemiallisen massan valkaisemiseksi sekä valkaisuliuoksen käyttö
US6030443A (en) *	1999-04-29	2000-02-29	Hercules Incorporated	Paper coating composition with improved optical brightener carriers
US6893473B2 (en) *	2002-05-07	2005-05-17	Weyerhaeuser.Company	Whitened fluff pulp

2006
- 2006-02-21 CA CA2601926A patent/CA2601926C/en not_active Expired - Fee Related
- 2006-02-21 AU AU2006213983A patent/AU2006213983B2/en not_active Ceased
- 2006-02-21 EP EP06735601A patent/EP1848856A1/en not_active Withdrawn
- 2006-02-21 NZ NZ561652A patent/NZ561652A/en not_active IP Right Cessation
- 2006-02-21 WO PCT/US2006/006011 patent/WO2006089274A1/en not_active Ceased
- 2006-02-21 CN CNA2006800052300A patent/CN101128630A/zh active Pending
- 2006-02-21 RU RU2007134269/12A patent/RU2386738C2/ru not_active IP Right Cessation
- 2006-02-21 US US11/358,543 patent/US20060185808A1/en not_active Abandoned
- 2006-02-21 BR BRPI0607171-6A patent/BRPI0607171A2/pt not_active IP Right Cessation
2010
- 2010-01-20 RU RU2010101656/12A patent/RU2010101656A/ru not_active Application Discontinuation

Also Published As

Publication number	Publication date
AU2006213983B2 (en)	2009-11-19
WO2006089274A1 (en)	2006-08-24
NZ561652A (en)	2010-10-29
CN101128630A (zh)	2008-02-20
CA2601926A1 (en)	2006-08-24
RU2007134269A (ru)	2009-03-20
BRPI0607171A2 (pt)	2009-08-11
RU2010101656A (ru)	2011-08-10
RU2386738C2 (ru)	2010-04-20
EP1848856A1 (en)	2007-10-31
AU2006213983A1 (en)	2006-08-24
US20060185808A1 (en)	2006-08-24

Legal Events

Date	Code	Title	Description
2008-01-25	EEER	Examination request
2013-04-04	MKLA	Lapsed	Effective date: 20130221

Publication	Publication Date	Title
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CA2654187C (en)	2013-01-08	Improved process for manufacturing pulp, paper and paperboard products
AU739524B2 (en)	2001-10-18	Method of whitening lignin-containing pulp during manufacture
CA2658971C (en)	2011-09-27	Improved compositions and processes for paper production
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SU1567711A1 (ru)	1990-05-30	Способ приготовлени бумажной массы дл изготовлени бумаги дл печати
CA2620978A1 (en)	2009-08-07	Combined process of peroxide bleaching of wood pulps and addition of optical brightening agents
Mohamed	2005	Optimization of dithionite bleaching of high yield bagasse pulp
Rao et al.	2002	Colour Reversion-Consideration of Practical Aspects Towards its Control and Prevention
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