FI855038A0 - Flerstegsfoerfarande foer blekning av hoegutbytes- och ultrahoegutbytesmassor. - Google Patents
Flerstegsfoerfarande foer blekning av hoegutbytes- och ultrahoegutbytesmassor.Info
- Publication number
- FI855038A0 FI855038A0 FI855038A FI855038A FI855038A0 FI 855038 A0 FI855038 A0 FI 855038A0 FI 855038 A FI855038 A FI 855038A FI 855038 A FI855038 A FI 855038A FI 855038 A0 FI855038 A0 FI 855038A0
- Authority
- FI
- Finland
- Prior art keywords
- ultrahoegutbytesmassor
- hoegutbytes
- flerstegsfoerfarande
- och
- blekning
- Prior art date
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
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Detergent Compositions (AREA)
- Artificial Filaments (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA000470961A CA1249402A (en) | 1984-12-21 | 1984-12-21 | Multistage brightening of high yield and ultra high- yield wood pulps |
Publications (2)
Publication Number | Publication Date |
---|---|
FI855038A0 true FI855038A0 (fi) | 1985-12-17 |
FI855038A FI855038A (fi) | 1986-06-22 |
Family
ID=4129447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI855038A FI855038A (fi) | 1984-12-21 | 1985-12-17 | Flerstegsfoerfarande foer blekning av hoegutbytes- och ultrahoegutbytesmassor. |
Country Status (9)
Country | Link |
---|---|
US (1) | US4804440A (fi) |
EP (1) | EP0187477B1 (fi) |
JP (1) | JPS61186593A (fi) |
AT (1) | ATE44783T1 (fi) |
BR (1) | BR8506403A (fi) |
CA (1) | CA1249402A (fi) |
DE (1) | DE3571662D1 (fi) |
FI (1) | FI855038A (fi) |
NO (1) | NO855233L (fi) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE8600615L (sv) * | 1985-02-15 | 1986-08-16 | Kamyr Ab | Hog ljushet astadkommes genom blekning av mekanisk massa, sasom kemisk-mekanisk massa (cmp), kemisk-termisk-mekanisk massa (ctmp) och liknande |
FR2604197B1 (fr) * | 1986-09-23 | 1988-11-18 | Atochem | Procede de blanchiment de matieres lignocellulosiques. |
US4675076A (en) * | 1986-10-01 | 1987-06-23 | Ppg Industries, Inc. | Method for brightening pulp |
SE456168C (sv) * | 1987-02-27 | 1991-06-06 | Mo Och Domsjoe Ab | Foerfarande foer ljushetsstabilisering av blekt lignininnehaallande cellulosamassa |
US5338402A (en) * | 1987-05-25 | 1994-08-16 | Societe Atochem | Process for preparing a bleached chemithermomechanical pulp |
FR2622221A1 (fr) * | 1987-10-22 | 1989-04-28 | Atochem | Procede de blanchiment de pates |
US5298118A (en) * | 1988-07-12 | 1994-03-29 | Atochem | Preparation of bleached chemithermomechanical pulp |
DE3831668A1 (de) * | 1988-09-17 | 1990-03-22 | Escher Wyss Gmbh | Verfahren zur weissgraderhoehung von altpapier mit neutralem wasserkreislauf |
JP2779197B2 (ja) * | 1989-02-20 | 1998-07-23 | 株式会社日本紙パルプ研究所 | 植物繊維の漂白方法 |
CA1340348C (en) * | 1989-03-23 | 1999-01-26 | Michel Barbe | Bleaching process for the production of high bright pulps |
US5011572A (en) * | 1989-05-19 | 1991-04-30 | Fmc Corporation | Two stage process for the oxygen delignification of lignocellulosic fibers with peroxide reinforcement in the first stage |
BE1004630A3 (fr) * | 1990-10-17 | 1992-12-22 | Interox Internat Sa | Procede pour la preservation des caracteristiques de resistance mecanique des pates a papier chimiques. |
GB9212926D0 (en) * | 1992-06-18 | 1992-07-29 | Morton Int Inc | Method of bleaching paper pulp |
SE9301960L (sv) * | 1993-06-08 | 1994-07-25 | Kvaerner Pulping Tech | Blekning av kemisk massa med peroxid vid övertryck |
US5562740A (en) * | 1995-06-15 | 1996-10-08 | The Procter & Gamble Company | Process for preparing reduced odor and improved brightness individualized, polycarboxylic acid crosslinked fibers |
USH1690H (en) * | 1995-07-20 | 1997-11-04 | Nye; Jeffrey | Process for bleaching kraft pulp |
US6706143B1 (en) | 1996-03-19 | 2004-03-16 | International Paper Company | Minimizing chlorinated organics in pulp bleaching processes |
FI991241A (fi) * | 1999-06-01 | 2000-12-02 | Aga Ab | Ligniinin valkaisu ja menetelmä paperin valmistamiseksi |
SE515708C2 (sv) * | 2000-02-11 | 2001-10-01 | Mo Och Domsjoe Ab | Blekning av förblekt mekanisk massa med oxiderande blekmedel förstärkt med borhydrid |
US6428653B1 (en) * | 2000-12-04 | 2002-08-06 | West Fraser Timber Co. Ltd. | Method of bleaching with formamidine sulfinic acid using a reducing agent to eliminate residual peroxide |
US6881299B2 (en) * | 2001-05-16 | 2005-04-19 | North American Paper Corporation | Refiner bleaching with magnesium oxide and hydrogen peroxide |
US6743332B2 (en) * | 2001-05-16 | 2004-06-01 | Weyerhaeuser Company | High temperature peroxide bleaching of mechanical pulps |
EP1418269B1 (en) * | 2002-11-05 | 2009-02-11 | Rohm And Haas Company | Method for brightening virgin mechanical pulp |
DE602004002934T2 (de) * | 2003-02-05 | 2007-05-10 | Pulp And Paper Research Institute Of Canada, Pointe Claire | Bleichen und Helligkeitsstabilisierung von Lignocellulosematerialien mit wasserlöslichen Phosphin- oder Phosphoniumverbindungen |
US7297225B2 (en) * | 2004-06-22 | 2007-11-20 | Georgia-Pacific Consumer Products Lp | Process for high temperature peroxide bleaching of pulp with cool discharge |
MX2007012385A (es) * | 2005-04-08 | 2008-03-11 | Nalco Co | Composicion y procesos mejorados para la produccion de papel. |
US20080110584A1 (en) * | 2006-11-15 | 2008-05-15 | Caifang Yin | Bleaching process with at least one extraction stage |
DE102007007654A1 (de) * | 2007-02-13 | 2008-08-14 | Voith Patent Gmbh | FAS Bleiche |
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 |
FI20086031L (fi) * | 2008-10-31 | 2010-05-01 | Kemira Oyj | Valkaisumenetelmä |
US11591751B2 (en) | 2019-09-17 | 2023-02-28 | Gpcp Ip Holdings Llc | High efficiency fiber bleaching process |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1820502A (en) * | 1928-06-30 | 1931-08-25 | Champion Fibre Company | Bleaching cellulose pulp |
US2290601A (en) * | 1940-02-16 | 1942-07-21 | Du Pont | Bleaching of ground wood pulp with preliminary bisulphite treatment |
US2435566A (en) * | 1944-10-16 | 1948-02-10 | West Virginia Pulp & Paper Co | Peroxide bleaching of ground wood |
US2865701A (en) * | 1953-12-07 | 1958-12-23 | Nat Distillers Chem Corp | Process of bleaching kraft pulp with alkaline hypochlorite bleach acidifying the pulp containing residual chlorine and then bleaching with alkaline peroxide |
US2862784A (en) * | 1955-03-04 | 1958-12-02 | Virginia Smelting Company | Oxidative-reductive multi-stage bleaching of ground wood pulp |
US3100732A (en) * | 1959-10-05 | 1963-08-13 | Du Pont | Process of bleaching wood pulp by combined treatment with peroxide and an alkali metal borohydride |
SE413684C (sv) * | 1974-09-23 | 1987-05-07 | Mo Och Domsjoe Ab | Forfarande for framstellning av cellulosamassa i utbytesomradet 65-95 % |
SE451606B (sv) * | 1982-09-14 | 1987-10-19 | Sca Development Ab | Sett vid blekning av hogutbytesmassor medelst peroxider |
US4619733A (en) * | 1983-11-30 | 1986-10-28 | Kooi Boon Lam | Pollution free pulping process using recycled wash effluent from multiple bleach stages to remove black liquor and recovering sodium hydroxide from the black liquor |
-
1984
- 1984-12-21 CA CA000470961A patent/CA1249402A/en not_active Expired
-
1985
- 1985-12-05 EP EP85308862A patent/EP0187477B1/en not_active Expired
- 1985-12-05 DE DE8585308862T patent/DE3571662D1/de not_active Expired
- 1985-12-05 AT AT85308862T patent/ATE44783T1/de active
- 1985-12-17 FI FI855038A patent/FI855038A/fi not_active Application Discontinuation
- 1985-12-19 BR BR8506403A patent/BR8506403A/pt not_active IP Right Cessation
- 1985-12-20 JP JP60287607A patent/JPS61186593A/ja active Pending
- 1985-12-20 NO NO855233A patent/NO855233L/no unknown
-
1988
- 1988-03-15 US US07/168,219 patent/US4804440A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
BR8506403A (pt) | 1986-09-02 |
DE3571662D1 (en) | 1989-08-24 |
CA1249402A (en) | 1989-01-31 |
JPS61186593A (ja) | 1986-08-20 |
US4804440A (en) | 1989-02-14 |
ATE44783T1 (de) | 1989-08-15 |
EP0187477B1 (en) | 1989-07-19 |
EP0187477A1 (en) | 1986-07-16 |
FI855038A (fi) | 1986-06-22 |
NO855233L (no) | 1986-06-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FA | Application withdrawn |
Owner name: PULP AND PAPER RESEARCH INSTITUTE OF CANADA |