CA2315063C - Bleaching of chemical pulp with peracid - Google Patents
Bleaching of chemical pulp with peracid Download PDFInfo
- Publication number
- CA2315063C CA2315063C CA002315063A CA2315063A CA2315063C CA 2315063 C CA2315063 C CA 2315063C CA 002315063 A CA002315063 A CA 002315063A CA 2315063 A CA2315063 A CA 2315063A CA 2315063 C CA2315063 C CA 2315063C
- Authority
- CA
- Canada
- Prior art keywords
- bleaching
- pulp
- post
- peracid
- carried out
- 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.)
- Expired - Fee Related
Links
- 238000004061 bleaching Methods 0.000 title claims abstract description 90
- 150000004965 peroxy acids Chemical class 0.000 title claims abstract description 31
- 229920001131 Pulp (paper) Polymers 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 47
- 239000007844 bleaching agent Substances 0.000 claims abstract description 10
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 5
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 claims description 78
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 10
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 5
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims 2
- 229940043430 calcium compound Drugs 0.000 claims 2
- 150000001674 calcium compounds Chemical class 0.000 claims 2
- 150000002681 magnesium compounds Chemical class 0.000 claims 2
- VSGNNIFQASZAOI-UHFFFAOYSA-L calcium acetate Chemical compound [Ca+2].CC([O-])=O.CC([O-])=O VSGNNIFQASZAOI-UHFFFAOYSA-L 0.000 claims 1
- 229960005147 calcium acetate Drugs 0.000 claims 1
- 235000011092 calcium acetate Nutrition 0.000 claims 1
- 239000001639 calcium acetate Substances 0.000 claims 1
- 229910000019 calcium carbonate Inorganic materials 0.000 claims 1
- 239000011777 magnesium Substances 0.000 description 18
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 17
- 229910052749 magnesium Inorganic materials 0.000 description 17
- 235000001055 magnesium Nutrition 0.000 description 17
- 229940091250 magnesium supplement Drugs 0.000 description 17
- 239000000126 substance Substances 0.000 description 15
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 14
- 239000000243 solution Substances 0.000 description 12
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 10
- 239000002253 acid Substances 0.000 description 9
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 6
- 239000011575 calcium Substances 0.000 description 6
- 229910052791 calcium Inorganic materials 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000004155 Chlorine dioxide Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 235000019398 chlorine dioxide Nutrition 0.000 description 5
- 239000005416 organic matter Substances 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 150000002978 peroxides Chemical class 0.000 description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 229920005610 lignin Polymers 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 230000020477 pH reduction Effects 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 150000001720 carbohydrates Chemical class 0.000 description 3
- 235000014633 carbohydrates Nutrition 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- GRWZHXKQBITJKP-UHFFFAOYSA-L dithionite(2-) Chemical compound [O-]S(=O)S([O-])=O GRWZHXKQBITJKP-UHFFFAOYSA-L 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000011122 softwood Substances 0.000 description 3
- 229910052723 transition metal Inorganic materials 0.000 description 3
- 150000003624 transition metals Chemical class 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- 235000018185 Betula X alpestris Nutrition 0.000 description 2
- 235000018212 Betula X uliginosa Nutrition 0.000 description 2
- SCKXCAADGDQQCS-UHFFFAOYSA-N Performic acid Chemical compound OOC=O SCKXCAADGDQQCS-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- FHHJDRFHHWUPDG-UHFFFAOYSA-N peroxysulfuric acid Chemical compound OOS(O)(=O)=O FHHJDRFHHWUPDG-UHFFFAOYSA-N 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- LJGHYPLBDBRCRZ-UHFFFAOYSA-N 3-(3-aminophenyl)sulfonylaniline Chemical compound NC1=CC=CC(S(=O)(=O)C=2C=C(N)C=CC=2)=C1 LJGHYPLBDBRCRZ-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 229910001902 chlorine oxide Inorganic materials 0.000 description 1
- MAYPHUUCLRDEAZ-UHFFFAOYSA-N chlorine peroxide Inorganic materials ClOOCl MAYPHUUCLRDEAZ-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- FDADMSDCHGXBHS-UHFFFAOYSA-N copper;ethene Chemical group [Cu].C=C FDADMSDCHGXBHS-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- JESHZQPNPCJVNG-UHFFFAOYSA-L magnesium;sulfite Chemical compound [Mg+2].[O-]S([O-])=O JESHZQPNPCJVNG-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- -1 peracetic acid Chemical class 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- CZPZWMPYEINMCF-UHFFFAOYSA-N propaneperoxoic acid Chemical compound CCC(=O)OO CZPZWMPYEINMCF-UHFFFAOYSA-N 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- D21H21/32—Bleaching agents
-
- 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
- D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Detergent Compositions (AREA)
- Cosmetics (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI974575A FI112958B (fi) | 1997-12-19 | 1997-12-19 | Menetelmä kemiallisen massan valkaisemiseksi sekä valkaisuliuoksen käyttö |
| FI974575 | 1997-12-19 | ||
| PCT/FI1998/000993 WO1999032710A1 (en) | 1997-12-19 | 1998-12-18 | Bleaching of chemical pulp with peracid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2315063A1 CA2315063A1 (en) | 1999-07-01 |
| CA2315063C true CA2315063C (en) | 2008-11-18 |
Family
ID=8550176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002315063A Expired - Fee Related CA2315063C (en) | 1997-12-19 | 1998-12-18 | Bleaching of chemical pulp with peracid |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP1040222B1 (https=) |
| JP (1) | JP4499280B2 (https=) |
| AT (1) | ATE385526T1 (https=) |
| AU (1) | AU1674399A (https=) |
| BR (1) | BR9813747B1 (https=) |
| CA (1) | CA2315063C (https=) |
| DE (1) | DE69839097T2 (https=) |
| ES (1) | ES2302362T3 (https=) |
| FI (1) | FI112958B (https=) |
| PT (1) | PT1040222E (https=) |
| WO (1) | WO1999032710A1 (https=) |
Families Citing this family (60)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI117392B (fi) * | 1999-03-02 | 2006-09-29 | Kemira Oyj | Monivaiheinen valkaisumenetelmä kemiallisen selluloosamassan valkaisemiseksi |
| JP3794254B2 (ja) * | 2000-02-28 | 2006-07-05 | 王子製紙株式会社 | 中性紙 |
| FI111459B (fi) | 2001-04-04 | 2003-07-31 | Kemira Chemicals Oy | Menetelmä stabiilin peretikkahappotuotteen valmistamiseksi |
| FI111745B (fi) | 2001-12-19 | 2003-09-15 | Kemira Chemicals Oy | Parannettu kartonginvalmistusmenetelmä |
| DE10211292A1 (de) | 2002-03-14 | 2003-09-25 | Basf Ag | Verfahren zur Herstellung von gefälltem Calciumcarbonat mit hohem Weißgrad |
| GB2391011A (en) * | 2002-07-19 | 2004-01-28 | Crosmill Ltd | Bleaching cellulose suspensions |
| 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 |
| CA2601926C (en) * | 2005-02-19 | 2011-07-19 | International Paper Company | Pulp and paper having increased brightness |
| US7914646B2 (en) | 2006-07-21 | 2011-03-29 | Nalco Company | Compositions and processes for paper production |
| JP4956991B2 (ja) * | 2005-12-22 | 2012-06-20 | 三菱瓦斯化学株式会社 | 化学パルプの製造方法 |
| JP4967451B2 (ja) | 2006-05-17 | 2012-07-04 | 三菱瓦斯化学株式会社 | 漂白パルプの製造方法 |
| CN101903591A (zh) | 2007-12-20 | 2010-12-01 | 三菱瓦斯化学株式会社 | 漂白纸浆的制造方法 |
| US7960528B1 (en) | 2009-12-07 | 2011-06-14 | E. I. Du Pont De Nemours And Company | Perhydrolase providing improved peracid stability |
| US7923233B1 (en) | 2009-12-07 | 2011-04-12 | E. I. Du Pont De Nemours And Company | Perhydrolase providing improved peracid stability |
| US7927854B1 (en) | 2009-12-07 | 2011-04-19 | E. I. Du Pont De Nemours And Company | Perhydrolase providing improved peracid stability |
| US7910347B1 (en) | 2009-12-07 | 2011-03-22 | E. I. Du Pont De Nemours And Company | Perhydrolase providing improved peracid stability |
| US7932072B1 (en) | 2009-12-07 | 2011-04-26 | E. I. Du Pont De Nemours And Company | Perhydrolase providing improved peracid stability |
| CN102906256B (zh) | 2010-03-26 | 2014-08-06 | 纳幕尔杜邦公司 | 用于纯化蛋白质的方法 |
| US8389255B2 (en) | 2010-03-26 | 2013-03-05 | E.I. De Pont De Nemours And Company | Perhydrolase providing improved specific activity |
| US8389254B2 (en) | 2010-03-26 | 2013-03-05 | E.I. Du Pont De Nemours And Company | Perhydrolase providing improved specific activity |
| WO2011119712A1 (en) | 2010-03-26 | 2011-09-29 | E.I. Dupont De Nemours And Company | Perhydrolase providing improved specific activity |
| WO2011119708A1 (en) | 2010-03-26 | 2011-09-29 | E.I. Dupont De Nemours And Company | Perhydrolase providing improved specific activity |
| WO2011119714A1 (en) | 2010-03-26 | 2011-09-29 | E.I. Dupont De Nemours And Company | Perhydrolase providing improved specific activity |
| EP2655646A4 (en) | 2010-12-20 | 2014-05-21 | Du Pont | TARGETED PERHYDROLASES |
| WO2012087790A1 (en) | 2010-12-21 | 2012-06-28 | E.I. Dupont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| WO2012087789A1 (en) | 2010-12-21 | 2012-06-28 | E.I. Dupont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| US8399234B2 (en) | 2010-12-21 | 2013-03-19 | E.I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| US8389256B2 (en) | 2010-12-21 | 2013-03-05 | E.I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| WO2012087786A1 (en) | 2010-12-21 | 2012-06-28 | E.I. Dupont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| WO2012087785A1 (en) | 2010-12-21 | 2012-06-28 | E.I. Dupont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| WO2012087787A1 (en) | 2010-12-21 | 2012-06-28 | E.I. Dupont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| WO2012087792A1 (en) | 2010-12-21 | 2012-06-28 | E.I. Dupont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| WO2012166997A2 (en) | 2011-05-31 | 2012-12-06 | Clean Chemistry, Llc | Electrochemical reactor and process |
| US8546120B2 (en) | 2011-10-25 | 2013-10-01 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| US8962294B2 (en) | 2011-10-25 | 2015-02-24 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| WO2013062885A1 (en) | 2011-10-25 | 2013-05-02 | E.I. Dupont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| US8546119B2 (en) | 2011-10-25 | 2013-10-01 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| US8956843B2 (en) | 2011-10-25 | 2015-02-17 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| US8735125B2 (en) | 2011-10-25 | 2014-05-27 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| US8486679B2 (en) | 2011-10-25 | 2013-07-16 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| US8557556B2 (en) | 2011-10-25 | 2013-10-15 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| US8809030B2 (en) | 2011-10-25 | 2014-08-19 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| WO2013096045A1 (en) | 2011-12-19 | 2013-06-27 | E. I. Du Pont De Nemours And Company | Perhydrolase variants providing improved specific activity in the presence of surfactant |
| EP2831250B1 (en) | 2012-03-30 | 2021-11-24 | DuPont US Holding, LLC | Enzymes useful for peracid production |
| WO2013148185A1 (en) | 2012-03-30 | 2013-10-03 | E. I. Du Pont De Nemours And Company | Enzymes useful for peracid production |
| EP2831253B1 (en) | 2012-03-30 | 2021-11-24 | DuPont US Holding, LLC | Enzymes useful for peracid production |
| US8865436B2 (en) | 2012-03-30 | 2014-10-21 | E. I. Du Pont De Nemours And Company | Enzymes useful for peracid production |
| MX2014011651A (es) | 2012-03-30 | 2015-02-13 | Du Pont | Enzimas utiles para la produccion de peracidos. |
| US9517955B2 (en) | 2012-09-07 | 2016-12-13 | Clean Chemistry, Llc | System and method for generation of point of use reactive oxygen species |
| FR2997069B1 (fr) * | 2012-10-18 | 2014-12-26 | Nicolas Saverino | Procede de fabrication d'une barquette coloree |
| WO2016037149A1 (en) | 2014-09-04 | 2016-03-10 | Clean Chemistry, Inc. | Method of water treatment utilizing a peracetate oxidant solution |
| CA2981034C (en) | 2015-03-26 | 2024-06-25 | Clean Chemistry, Inc. | Systems and methods of reducing a bacteria population in high hydrogen sulfide water |
| FI127444B (en) * | 2015-05-27 | 2018-06-15 | Kemira Oyj | A method for reducing the viscosity of a pulp in the manufacture of soluble cellulose |
| WO2017055504A1 (en) * | 2015-09-30 | 2017-04-06 | Imerys Minerals Limited | Methods for bleaching aqueous pulps and compositions for use in these methods |
| US10883224B2 (en) | 2015-12-07 | 2021-01-05 | Clean Chemistry, Inc. | Methods of pulp fiber treatment |
| EP3386925B1 (en) | 2015-12-07 | 2025-03-05 | Clean Chemistry, Inc. | Methods of microbial control |
| FI127996B (en) * | 2016-07-01 | 2019-07-15 | Kemira Oyj | A process for treating pulp |
| US11136714B2 (en) | 2016-07-25 | 2021-10-05 | Clean Chemistry, Inc. | Methods of optical brightening agent removal |
| US11001864B1 (en) | 2017-09-07 | 2021-05-11 | Clean Chemistry, Inc. | Bacterial control in fermentation systems |
| US11311012B1 (en) | 2017-09-07 | 2022-04-26 | Clean Chemistry, Inc. | Bacterial control in fermentation systems |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE420430B (sv) * | 1978-02-17 | 1981-10-05 | Mo Och Domsjoe Ab | Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel |
| JPH01148891A (ja) * | 1987-12-04 | 1989-06-12 | Nippon Shokubai Kagaku Kogyo Co Ltd | 木材パルプの漂白方法 |
| FI90795C (fi) * | 1990-06-07 | 1994-11-22 | Ahlstroem Oy | Tuotantolaitos aines- tai tavaravirtojen käsittelemiseksi, erityisesti sellutehdas |
| BE1006057A3 (fr) * | 1992-07-06 | 1994-05-03 | Solvay Interox | Procede pour la delignification d'une pate a papier chimique. |
| BE1007651A3 (fr) * | 1993-10-22 | 1995-09-05 | Solvay Interox | Procede pour le blanchiment d'une pate a papier chimique. |
| CA2163389A1 (en) * | 1994-11-23 | 1996-05-24 | Malcolm Cronlund | Chlorine-free organosolv pulps |
| SK284917B6 (sk) * | 1994-12-28 | 2006-02-02 | Minerals Technologies Inc. | Spôsob zlepšenia belosti papierového produktu pôsobením bieliaceho činidla |
| SE506480C2 (sv) * | 1995-06-29 | 1997-12-22 | Sca Graphic Res Ab | Blekning av lignocellulosahaltigt fibermaterial med ozon och persyra i ett kombinationssteg |
| JP3698178B2 (ja) * | 1995-09-22 | 2005-09-21 | 三菱瓦斯化学株式会社 | 製紙用化学パルプの漂白方法 |
| EP0801170A1 (fr) * | 1996-04-12 | 1997-10-15 | Chemoxal Sa | Procédé pour la délignification et/ou le blanchiment d'une pâte à papier |
| FI964715A7 (fi) * | 1996-11-26 | 1998-05-27 | Oy Keskuslaboratorio Centrallaboratorium Ab | Menetelmä selluloosamassan valkaisemiseksi |
-
1997
- 1997-12-19 FI FI974575A patent/FI112958B/fi not_active IP Right Cessation
-
1998
- 1998-12-18 JP JP2000525621A patent/JP4499280B2/ja not_active Expired - Lifetime
- 1998-12-18 AU AU16743/99A patent/AU1674399A/en not_active Abandoned
- 1998-12-18 ES ES98961279T patent/ES2302362T3/es not_active Expired - Lifetime
- 1998-12-18 CA CA002315063A patent/CA2315063C/en not_active Expired - Fee Related
- 1998-12-18 PT PT98961279T patent/PT1040222E/pt unknown
- 1998-12-18 EP EP98961279A patent/EP1040222B1/en not_active Expired - Lifetime
- 1998-12-18 DE DE69839097T patent/DE69839097T2/de not_active Expired - Lifetime
- 1998-12-18 WO PCT/FI1998/000993 patent/WO1999032710A1/en not_active Ceased
- 1998-12-18 BR BRPI9813747-6A patent/BR9813747B1/pt not_active IP Right Cessation
- 1998-12-18 AT AT98961279T patent/ATE385526T1/de active
Also Published As
| Publication number | Publication date |
|---|---|
| AU1674399A (en) | 1999-07-12 |
| FI974575A0 (fi) | 1997-12-19 |
| CA2315063A1 (en) | 1999-07-01 |
| FI974575L (fi) | 1999-06-20 |
| PT1040222E (pt) | 2008-05-05 |
| EP1040222B1 (en) | 2008-02-06 |
| BR9813747B1 (pt) | 2009-01-13 |
| DE69839097D1 (de) | 2008-03-20 |
| BR9813747A (pt) | 2000-10-17 |
| ATE385526T1 (de) | 2008-02-15 |
| FI112958B (fi) | 2004-02-13 |
| JP2001527168A (ja) | 2001-12-25 |
| JP4499280B2 (ja) | 2010-07-07 |
| EP1040222A1 (en) | 2000-10-04 |
| WO1999032710A1 (en) | 1999-07-01 |
| DE69839097T2 (de) | 2009-01-29 |
| ES2302362T3 (es) | 2008-07-01 |
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