CA2654187A1 - Improved process for manufacturing pulp, paper and paperboard products - Google Patents
Improved process for manufacturing pulp, paper and paperboard products Download PDFInfo
- Publication number
- CA2654187A1 CA2654187A1 CA002654187A CA2654187A CA2654187A1 CA 2654187 A1 CA2654187 A1 CA 2654187A1 CA 002654187 A CA002654187 A CA 002654187A CA 2654187 A CA2654187 A CA 2654187A CA 2654187 A1 CA2654187 A1 CA 2654187A1
- Authority
- CA
- Canada
- Prior art keywords
- pulp
- mechanical
- bleaching
- bleaching agents
- process according
- Prior art date
- 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.)
- Granted
Links
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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
Abstract
A process for bleaching mechanical wood pulp is provided comprising subjecting the wood pulp to at least one bleaching stage with one or more bleaching agents in the presence of one or more optical brightening agent, wherein the bleaching agents are selected from the group consisting of oxidative bleaching agents other than chlorine based bleaching agents such as chlorine dioxide, elemental chlorine or a combination thereof, reductive bleaching agents or any combination of two or more thereof.
Claims (20)
1. An improved process for manufacturing brightened mechanical pulp comprising treating the pulp with one or more optical brightening agents in the presence of one or more bleaching agents, wherein the bleaching agents are selected from the group consisting of bleaching agents other than chlorine based bleaching agents.
2. A process according to claim 1 wherein said pulp id treated in the presence of active bleaching agents.
3 A process according to claim 1 wherein said pulp is treated in the presence of spent bleaching agents.
4. A process according to claim 1 wherein said bleaching agent comprises peroxide.
5. A bleached mechanical pulp having an ISO brightness equal to or greater than about 90 and pulp mixtures comprising such mechanical pulp.
6. An improved process for forming bleached mechanical pulp of the type comprising:
(a) a mechanical refining stage wherein wood chips are mechanically refined to form mechanical refined wood pulp; and (b) a bleaching stage wherein said mechanical refined wood pulp is bleached in one or more bleaching stages to form a bleached mechanical refined wood pulp;
the improvement comprising bleaching the mechanical refined wood pulp with one or more bleaching agents in the presence of one or more optical brightening agent, said bleaching agents selected from the group consisting of oxidative bleaching agents other than chlorine based bleaching agents such as chlorine dioxide, elemental chlorine or a combination thereof, reductive bleaching agents or any combination of two or more thereof.
(a) a mechanical refining stage wherein wood chips are mechanically refined to form mechanical refined wood pulp; and (b) a bleaching stage wherein said mechanical refined wood pulp is bleached in one or more bleaching stages to form a bleached mechanical refined wood pulp;
the improvement comprising bleaching the mechanical refined wood pulp with one or more bleaching agents in the presence of one or more optical brightening agent, said bleaching agents selected from the group consisting of oxidative bleaching agents other than chlorine based bleaching agents such as chlorine dioxide, elemental chlorine or a combination thereof, reductive bleaching agents or any combination of two or more thereof.
7. An improved pulping and paper making process of the type comprising:
(a) a mechanical refining stage wherein wood chips are mechanically refined to form mechanical refined wood pulp, (b) a bleaching stage wherein said mechanically refined wood pulp is bleached in one or more bleaching stages to form bleached mechanical refined aspen wood pulp, (c) a furnish forming stage wherein an aqueous paper making stock furnish comprising said bleached mechanical refined wood pulp is formed;
(d) a furnish depositing stage wherein said furnish is deposited on a forming wire of a paper making machine to form a wet paper web; and (e) a wet paper web drying stage wherein said wet paper web to form a first dried paper web, the improvement comprising bleaching the mechanical refined wood pulp with one or more bleaching agents in the presence of one or more optical brightening agent, said bleaching agents selected from the group consisting of oxidative bleaching agents other than chlorine based bleaching agents such as chlorine dioxide, elemental chlorine or a combination thereof, reductive bleaching agents or any combination of two or more thereof.
(a) a mechanical refining stage wherein wood chips are mechanically refined to form mechanical refined wood pulp, (b) a bleaching stage wherein said mechanically refined wood pulp is bleached in one or more bleaching stages to form bleached mechanical refined aspen wood pulp, (c) a furnish forming stage wherein an aqueous paper making stock furnish comprising said bleached mechanical refined wood pulp is formed;
(d) a furnish depositing stage wherein said furnish is deposited on a forming wire of a paper making machine to form a wet paper web; and (e) a wet paper web drying stage wherein said wet paper web to form a first dried paper web, the improvement comprising bleaching the mechanical refined wood pulp with one or more bleaching agents in the presence of one or more optical brightening agent, said bleaching agents selected from the group consisting of oxidative bleaching agents other than chlorine based bleaching agents such as chlorine dioxide, elemental chlorine or a combination thereof, reductive bleaching agents or any combination of two or more thereof.
8. A paper or paper board web comprising bleached mechanical pulp having an ISO
brightness equal to or greater than about 90.
brightness equal to or greater than about 90.
9. The paper or paper board web according to Claim 8 having from 10 to 20%
bulk enhancement.
bulk enhancement.
10. A process for manufacturing brightened pulp, comprising treating the pulp with one or more optical brightening agents in the presence of one or more bleaching agents, wherein the bleaching agents are selected from the group consisting of bleaching agents other than chlorine based bleaching agents.
11. The process according to Claim 10, wherein the pulp is a mixture of mechanical and chemical fibers.
12. The process according to Claim 11, wherein the mechanical fibers have a Canadian Standard Freeness of at least 200 csf and a shive content of not more than 0.5%.
13. The process according to Claim 12, wherein the mechanical fibers are CTMP.
14. The process according to claim 13, further comprising pre-treating the chemical fibers with at least one bleaching stage in the presence of at least one chlorine based bleaching agent.
15. The process according to Claim 14, wherein the pulp comprises from 20 to 80wt% of mechanical fibers and from 20 to 80 wt% to of chemical fibers based upon the total dry weight of the fibers.
16. The process according to Claims 15, wherein from 0.5 to 10 wt% of bleaching agent based upon the total dry weight of the pulp and from 0.1 to 2wt% of optical brightener based upon the total dry weight of the pulp is used in the treatment of the pulp.
17. The process according to Claim 16, wherein said treating is performed in the presence of from 1.0 to 8.0wt% of stabilizer based upon the total dry weight of the pulp.
18. The process according to Claim 17, wherein the treating is for a time period of from 0.5 to 10 hours at a temperature of from 25 to 120°C, at a fiber consistency of at least 10%.
19. A mixture of mechanical and chemical fibers made from the process according to Claim 18 and having an ISO brightness that is at least 90 ISO points.
20. A paper or paperboard substrate, comprising the mixture of mechanical and chemical fibers according to Claim 19 and having an ISO brightness that is at least 90 ISO points.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/446,421 US7967948B2 (en) | 2006-06-02 | 2006-06-02 | Process for non-chlorine oxidative bleaching of mechanical pulp in the presence of optical brightening agents |
US11/446,421 | 2006-06-02 | ||
PCT/US2007/013103 WO2007143182A2 (en) | 2006-06-02 | 2007-06-04 | Improved process for manufacturing pulp, paper and paperboard products |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2654187A1 true CA2654187A1 (en) | 2007-12-13 |
CA2654187C CA2654187C (en) | 2013-01-08 |
Family
ID=38686719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2654187A Expired - Fee Related CA2654187C (en) | 2006-06-02 | 2007-06-04 | Improved process for manufacturing pulp, paper and paperboard products |
Country Status (5)
Country | Link |
---|---|
US (4) | US7967948B2 (en) |
EP (1) | EP2054548A2 (en) |
CA (1) | CA2654187C (en) |
RU (1) | RU2424388C2 (en) |
WO (1) | WO2007143182A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11725338B2 (en) | 2014-03-25 | 2023-08-15 | Basf Se | Method for producing bleached wood fibre material |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7914646B2 (en) * | 2006-07-21 | 2011-03-29 | Nalco Company | Compositions and processes for paper production |
CA2547276A1 (en) * | 2006-05-19 | 2007-11-19 | Abitibi-Consolidated Inc. | Coated mechanical pulp paper |
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 |
EP2671595B1 (en) | 2007-05-23 | 2020-10-21 | 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 |
US8298373B2 (en) * | 2008-02-07 | 2012-10-30 | University Of New Brunswick | Combined process of peroxide bleaching of wood pulps and addition of optical brightening agents |
US8821688B2 (en) * | 2008-03-26 | 2014-09-02 | Clariant Finance (Bvi) Limited | Optical brightening compositions |
FI20085345L (en) * | 2008-04-22 | 2009-10-23 | Kemira Oyj | Method for reducing light-induced yellowing in lignin-containing material |
CN103088699B (en) | 2008-06-20 | 2015-04-22 | 国际纸业公司 | Composition And Recording Sheet With Improved Optical Properties |
ES2390932T5 (en) | 2008-11-27 | 2020-09-14 | Archroma Ip Gmbh | Optical Brightening Compositions for High-Quality Inkjet Printing |
US20100140545A1 (en) * | 2008-12-08 | 2010-06-10 | May Ruth E | Compositions for spray bleaching cellulosic fabrics |
US8404628B1 (en) * | 2008-12-08 | 2013-03-26 | Hbi Branded Apparel Enterprises, Llc | Method for spray bleaching cellulosic fabrics |
US9932709B2 (en) | 2013-03-15 | 2018-04-03 | Ecolab Usa Inc. | Processes and compositions for brightness improvement in paper production |
ES2525959T3 (en) | 2009-08-05 | 2015-01-02 | International Paper Company | Procedure for applying a composition containing a trivalent cationic and sliding metal, and fluff paste sheet prepared therefrom |
MY162376A (en) | 2009-08-05 | 2017-06-15 | Shell Int Research | Method for monitoring a well |
CN104947509B (en) * | 2009-08-05 | 2017-11-03 | 国际纸业公司 | Dry fluff pulp sheet additive |
US8936697B2 (en) * | 2010-01-06 | 2015-01-20 | Sustainable Health Enterprises | Highly absorbent and retentive fiber material |
WO2011119423A2 (en) * | 2010-03-23 | 2011-09-29 | International Paper Company | Improved bctmp filtrate recycling system and method |
US8932727B2 (en) * | 2010-07-01 | 2015-01-13 | Clariant Finance (Bvi) Limited | Aqueous compositions for whitening and shading in coating applications |
CN103003489B (en) | 2010-07-20 | 2016-01-20 | 国际纸业公司 | Comprise polyvalent cation type metal and containing the composition of amine antistatic additive and method of manufacture and use thereof |
EP2596167B1 (en) | 2010-07-22 | 2017-03-22 | International Paper Company | Process for preparing fluff pulp sheet with cationic dye and debonder surfactant and fluff pulp sheet made from same |
TR201810024T4 (en) * | 2010-07-23 | 2018-08-27 | Archroma Ip Gmbh | Method for preparing white paper. |
AU2012268700B2 (en) * | 2011-05-23 | 2017-02-02 | Gp Cellulose Gmbh | Softwood kraft fiber having improved whiteness and brightness and methods of making and using the same |
US9267240B2 (en) | 2011-07-28 | 2016-02-23 | Georgia-Pacific Products LP | High softness, high durability bath tissue incorporating high lignin eucalyptus fiber |
TWI628331B (en) | 2012-01-12 | 2018-07-01 | Gp纖維股份有限公司 | A low viscosity kraft fiber having reduced yellowing properties and methods of making and using the same |
US9879361B2 (en) | 2012-08-24 | 2018-01-30 | Domtar Paper Company, Llc | Surface enhanced pulp fibers, methods of making surface enhanced pulp fibers, products incorporating surface enhanced pulp fibers, and methods of making products incorporating surface enhanced pulp fibers |
EP2954115B1 (en) | 2013-02-08 | 2022-01-12 | GP Cellulose GmbH | Softwood kraft fiber having an improved a-cellulose content and its use in the production of chemical cellulose products |
ES2566109T3 (en) | 2013-03-21 | 2016-04-11 | Archroma Ip Gmbh | Optical brightening agents for high quality inkjet printing |
MX2016010821A (en) | 2014-02-21 | 2017-05-09 | Domtar Paper Co Llc | Surface enhanced pulp fibers in fiber cement. |
WO2015127239A1 (en) | 2014-02-21 | 2015-08-27 | Domtar Paper Company Llc | Surface enhanced pulp fibers at a substrate surface |
US11473245B2 (en) | 2016-08-01 | 2022-10-18 | Domtar Paper Company Llc | Surface enhanced pulp fibers at a substrate surface |
WO2018075627A1 (en) | 2016-10-18 | 2018-04-26 | Domtar Paper Company, Llc | Method for production of filler loaded surface enhanced pulp fibers |
EP3710632B1 (en) | 2017-12-22 | 2021-12-01 | Archroma IP GmbH | Optical brightener for whitening paper |
CA3088962A1 (en) | 2018-02-05 | 2019-08-08 | Harshad PANDE | Paper products and pulps with surface enhanced pulp fibers and increased absorbency, and methods of making same |
PL3623392T3 (en) | 2018-09-14 | 2024-01-15 | Archroma Ip Gmbh | Optically brightened latexes |
WO2020198516A1 (en) | 2019-03-26 | 2020-10-01 | Domtar Paper Company, Llc | Paper products subjected to a surface treatment comprising enzyme-treated surface enhanced pulp fibers and methods of making the same |
CA3122786A1 (en) * | 2021-06-18 | 2022-12-18 | Sixring Inc. | Temperature-controlled delignification of biomass |
Family Cites Families (78)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2527563A (en) * | 1947-08-13 | 1950-10-31 | Buffalo Electro Chem Co | Method of bleaching semichemical pulps |
NL293489A (en) * | 1962-07-16 | |||
SE303088B (en) * | 1963-05-31 | 1968-08-12 | Defibrator Ab | |
US3467574A (en) * | 1966-06-14 | 1969-09-16 | Crown Zellerbach Corp | Refiner bleaching of high yield pulps |
US3661320A (en) * | 1970-01-19 | 1972-05-09 | David Donaldson | Egg carton |
US3804944A (en) * | 1970-10-02 | 1974-04-16 | Virginia Chemicals Inc | Sodium dithionite solution stablization |
US3847363A (en) * | 1972-10-20 | 1974-11-12 | Reinhall Rolf | Device in grinding apparatus for vegetable or fibrous material |
US4312634A (en) * | 1972-12-06 | 1982-01-26 | Jerome Katz | Method for treating cellulosic materials prior to bleaching |
JPS5653557B2 (en) * | 1973-10-15 | 1981-12-19 | ||
SE7317565L (en) | 1973-12-28 | 1975-06-30 | Selander Stig Daniel | |
US3873412A (en) * | 1974-04-01 | 1975-03-25 | Bauer Bros Co | Mechanically refining a mixture of kraft and semichemical pulp |
US3985674A (en) * | 1974-12-10 | 1976-10-12 | Virginia Chemicals Inc. | Stabilized sodium dithionite solutions |
US4187141A (en) * | 1975-02-24 | 1980-02-05 | Alf Societe Anonyme | Method of producing bleached mechanical pulp |
SE413601B (en) * | 1976-06-30 | 1980-06-09 | American Defibrator | SET FOR MANUFACTURING THE FIBER MASS IN A UNDERPRESSED MALAWARE AND DEVICE FOR IMPLEMENTATION OF THE SET |
SE413784B (en) * | 1976-08-06 | 1980-06-23 | Isel Sa | SET AND DEVICE TO USE IN DEFIBRATION ZONE DEVELOPED HEAT TO MINIMIZE CONSUMPTION WHEN PREPARING MASS FOR FIBER DISC |
DE2721084C3 (en) * | 1977-05-11 | 1981-02-26 | Hoechst Ag, 6000 Frankfurt | Mixtures of optical brighteners |
US4225385A (en) * | 1979-01-15 | 1980-09-30 | Westvaco Corporation | Shive ratio analyzer |
AU539108B2 (en) * | 1979-04-17 | 1984-09-13 | Interox Societe Anonyme | Delignification of unbleached chemical pulp |
SE451202C (en) * | 1981-04-03 | 1988-11-22 | Ole Axelson | PROCEDURES FOR PREPARING CHEMICAL MECHANICAL |
US4534954A (en) * | 1982-08-17 | 1985-08-13 | Virginia Chemicals Inc. | Sodium hydrosulfite slurries |
FR2552125B1 (en) * | 1983-09-16 | 1986-03-21 | Interox | PROCESS FOR THE TREATMENT OF CELLULOSIC MATERIALS BY OXIDIZING AGENTS |
DE3406322A1 (en) * | 1984-02-22 | 1985-08-22 | Basf Ag, 6700 Ludwigshafen | STABILIZED, WATER-CONTAINING, ALKALINE-SET SODIUM DITHIONITE PREPARATIONS |
US4699619A (en) * | 1984-08-31 | 1987-10-13 | Kimberly-Clark Corporation | Absorbent structure designed for absorbing body fluids |
SE8501246L (en) * | 1985-03-13 | 1986-09-14 | Eka Ab | SET TO MANUFACTURE IN BLEACH, CHEMICAL MECHANICAL AND SEMI-CHEMICAL FIBER MASS USING ONE-STEP IMAGRATION |
US5002635A (en) * | 1985-09-20 | 1991-03-26 | Scott Paper Company | Method for producing pulp using pre-treatment with stabilizers and refining |
SE456168C (en) * | 1987-02-27 | 1991-06-06 | Mo Och Domsjoe Ab | PROCEDURE PROVIDES LIGHTNESS STABILIZATION OF BLACK LIGNIN-CONTENT CELLULOSAMASSA |
GB2215350B (en) * | 1988-03-16 | 1992-05-20 | Thiokol Morton Inc | Process for bleaching mechanical wood pulp |
CA1340348C (en) | 1989-03-23 | 1999-01-26 | Michel Barbe | Bleaching process for the production of high bright pulps |
FI87372C (en) * | 1989-03-30 | 1992-12-28 | Genencor Int Europ | Process for making fluff pulp with improved tearability |
US5223090A (en) * | 1991-03-06 | 1993-06-29 | The United States Of America As Represented By The Secretary Of Agriculture | Method for fiber loading a chemical compound |
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 (en) * | 1992-09-14 | 1994-03-17 | Ciba Geigy | Process for improving the whiteness, brightness and color location of fibrous materials |
US5292422A (en) * | 1992-09-15 | 1994-03-08 | Ip Holding Company | Modules for electrodeionization apparatus |
US5616280A (en) * | 1993-08-25 | 1997-04-01 | Burlington Chemical Co., Inc. | Bleaching composition |
GB9412590D0 (en) | 1994-06-23 | 1994-08-10 | Sandoz Ltd | Organic compounds |
WO1996017573A2 (en) * | 1994-12-09 | 1996-06-13 | The Procter & Gamble Company | Absorbent composites and absorbent articles containing the same |
US5766159A (en) * | 1995-07-06 | 1998-06-16 | International Paper Company | Personal hygiene articles for absorbing fluids |
US5759349A (en) * | 1995-12-14 | 1998-06-02 | Westvaco Corporation | Lumen loading of hygienic end use paper fibers |
DE19614587A1 (en) * | 1996-04-13 | 1997-10-16 | Jaschinski Thomas Dipl Holzw | Process and bleaching solution for bleaching cellulosic fibers |
US5876625A (en) * | 1996-07-22 | 1999-03-02 | Carnegie Mellon University | Metal ligand containing bleaching compositions |
US6379497B1 (en) * | 1996-09-20 | 2002-04-30 | Fort James Corporation | Bulk enhanced paperboard and shaped products made therefrom |
US5902454A (en) * | 1996-12-13 | 1999-05-11 | Ciba Specialty Chemicals Corporation | Method of whitening lignin-containing paper pulps |
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 |
EP0905317B1 (en) | 1997-09-16 | 2009-12-23 | Basf Se | A method for optically brightening paper |
US6059927A (en) * | 1997-09-23 | 2000-05-09 | Queen's University At Kingston | Method of reducing brightness reversion and yellowness (B*) of bleached mechanical wood pulps |
IT1296947B1 (en) | 1997-12-10 | 1999-08-03 | Donato Fausto De | COMPOSITION FOR WHITENING THE WOOD PASTE AND RELATED PROCEDURE |
GB9813248D0 (en) * | 1998-06-22 | 1998-08-19 | Clariant Int Ltd | Improvements in or relating to organic compounds |
ATE553919T1 (en) * | 1998-09-03 | 2012-05-15 | Stora Enso Ab | PAPER OR CARDBOARD LAMINATE AND METHOD FOR PRODUCING IT |
US6599326B1 (en) * | 1999-01-20 | 2003-07-29 | Ciba Specialty Chemicals Corporation | Inhibition of pulp and paper yellowing using hydroxylamines and other coadditives |
EP1155040B1 (en) * | 1999-02-24 | 2006-04-26 | SCA Hygiene Products GmbH | Oxidized cellulose-containing fibrous materials and products made therefrom |
DE19953590A1 (en) | 1999-11-08 | 2001-05-17 | Sca Hygiene Prod Gmbh | Cellulose-containing fibrous material, for tissue papers and tissue products used in personal grooming and hygiene, includes hydroxy groups oxidized at the glucose units to aldehyde and/or carboxy groups |
EP1212308A1 (en) * | 1999-09-10 | 2002-06-12 | Ciba SC Holding AG | Triazinylaminostilbene derivative as fluorescent whitening agents |
GB9930247D0 (en) * | 1999-12-22 | 2000-02-09 | Clariant Int Ltd | Improvements in or relating to organic compounds |
WO2001052911A2 (en) | 2000-01-19 | 2001-07-26 | Weyerhaeuser Company | Superabsorbent cellulosic fiber |
GB0100610D0 (en) * | 2001-01-10 | 2001-02-21 | Clariant Int Ltd | Improvements in or relating to organic compounds |
JP4414653B2 (en) * | 2001-04-30 | 2010-02-10 | チバ ホールディング インコーポレーテッド | Metal complex compounds and their use as oxidation catalysts |
US6743332B2 (en) * | 2001-05-16 | 2004-06-01 | Weyerhaeuser Company | High temperature peroxide bleaching of mechanical pulps |
US6649037B2 (en) * | 2001-05-29 | 2003-11-18 | United States Filter Corporation | Electrodeionization apparatus and method |
US6527914B1 (en) * | 2002-01-30 | 2003-03-04 | Ondeo Nalco Company | Method of enhancing brightness and brightness stability of paper made with mechanical pulp |
CA2477847A1 (en) | 2002-03-06 | 2003-09-12 | Iogen Bio-Products Corporation | Xylanase treatment of chemical pulp |
CA2377775A1 (en) * | 2002-03-18 | 2003-09-18 | Gilles Bouchard | Process for the manufacture of grades cfs#3, cfs#4 and cgw#4 coated paper from thermomechanical pulp with low freeness value and high brightness |
US6893473B2 (en) * | 2002-05-07 | 2005-05-17 | Weyerhaeuser.Company | Whitened fluff pulp |
US6737486B2 (en) * | 2002-07-16 | 2004-05-18 | Eastman Kodak Company | Polymerization process |
GB2391011A (en) * | 2002-07-19 | 2004-01-28 | Crosmill Ltd | Bleaching cellulose suspensions |
US7018509B2 (en) * | 2002-08-31 | 2006-03-28 | International Paper Co. | Elimination of alum yellowing of aspen thermomechanical pulp through pulp washing |
US7176344B2 (en) * | 2002-09-06 | 2007-02-13 | Sca Hygiene Products Ab | Sensoring absorbing article |
AU2003272481A1 (en) * | 2002-09-13 | 2004-04-30 | Yang, Sen | Paper with improved stiffness and bulk and method for making same |
CA2450973C (en) * | 2002-11-27 | 2013-06-11 | Dalhousie University | A method for tracking particles and life forms in three dimensions and in time |
EP1848856A1 (en) * | 2005-02-19 | 2007-10-31 | International Paper Company | Fixation of optical brightening agents onto papermaking fiber |
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 |
JP5302670B2 (en) * | 2005-03-11 | 2013-10-02 | インターナショナル・ペーパー・カンパニー | Compositions containing expandable microspheres and ionic compounds, and methods for making and using these compositions |
US8246780B2 (en) * | 2005-09-19 | 2012-08-21 | Nalco Company | Methods for enhancing brightness and resistance to thermal yellowing of bleached kraft pulp and paper |
JP5112291B2 (en) | 2005-04-08 | 2013-01-09 | ナルコ カンパニー | Improved composition and process for papermaking |
PL1883731T3 (en) * | 2005-05-24 | 2016-03-31 | Int Paper Co | Modified kraft fibers |
US7914646B2 (en) * | 2006-07-21 | 2011-03-29 | Nalco Company | Compositions and processes for paper production |
EP1811080A1 (en) | 2006-01-24 | 2007-07-25 | Solvay SA | Process for the bleaching of mechanical paper pulp |
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 |
KR101289038B1 (en) * | 2006-06-30 | 2013-07-23 | 엘지디스플레이 주식회사 | bonding device and fa brication method of Light emitting device using thereof |
-
2006
- 2006-06-02 US US11/446,421 patent/US7967948B2/en not_active Expired - Fee Related
-
2007
- 2007-06-04 CA CA2654187A patent/CA2654187C/en not_active Expired - Fee Related
- 2007-06-04 US US11/810,117 patent/US20080066878A1/en not_active Abandoned
- 2007-06-04 EP EP07809293A patent/EP2054548A2/en not_active Withdrawn
- 2007-06-04 WO PCT/US2007/013103 patent/WO2007143182A2/en active Application Filing
- 2007-06-04 RU RU2008150426/12A patent/RU2424388C2/en not_active IP Right Cessation
-
2008
- 2008-11-26 US US12/315,070 patent/US20090145562A1/en not_active Abandoned
-
2011
- 2011-06-17 US US13/162,667 patent/US20110315331A1/en not_active Abandoned
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11725338B2 (en) | 2014-03-25 | 2023-08-15 | Basf Se | Method for producing bleached wood fibre material |
Also Published As
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RU2424388C2 (en) | 2011-07-20 |
US20080066878A1 (en) | 2008-03-20 |
WO2007143182A2 (en) | 2007-12-13 |
US20090145562A1 (en) | 2009-06-11 |
WO2007143182A3 (en) | 2008-03-06 |
EP2054548A2 (en) | 2009-05-06 |
RU2008150426A (en) | 2010-06-27 |
CA2654187C (en) | 2013-01-08 |
US20070277947A1 (en) | 2007-12-06 |
WO2007143182A9 (en) | 2008-04-17 |
US7967948B2 (en) | 2011-06-28 |
US20110315331A1 (en) | 2011-12-29 |
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