CA987456A - Chlorine-free multi-stage bleaching of cellulose - Google Patents
Chlorine-free multi-stage bleaching of celluloseInfo
- Publication number
- CA987456A CA987456A CA169,114A CA169114A CA987456A CA 987456 A CA987456 A CA 987456A CA 169114 A CA169114 A CA 169114A CA 987456 A CA987456 A CA 987456A
- Authority
- CA
- Canada
- Prior art keywords
- chlorine
- cellulose
- stage bleaching
- free multi
- free
- 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
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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2219505A DE2219505C3 (de) | 1972-04-21 | 1972-04-21 | Chlorfreie Mehrstufenbleiche von Zellstoff |
FR7630794A FR2367859A1 (fr) | 1972-04-21 | 1976-10-13 | Proce |
Publications (1)
Publication Number | Publication Date |
---|---|
CA987456A true CA987456A (en) | 1976-04-20 |
Family
ID=25763123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA169,114A Expired CA987456A (en) | 1972-04-21 | 1973-04-19 | Chlorine-free multi-stage bleaching of cellulose |
Country Status (8)
Country | Link |
---|---|
US (1) | US3867246A (fr) |
AT (1) | AT328289B (fr) |
BE (1) | BE845580Q (fr) |
CA (1) | CA987456A (fr) |
CH (1) | CH578087A5 (fr) |
DE (1) | DE2219505C3 (fr) |
FR (1) | FR2367859A1 (fr) |
SE (1) | SE405130B (fr) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4196043A (en) * | 1970-12-21 | 1980-04-01 | Scott Paper Company | Kraft pulp bleaching and recovery process |
IT1074373B (it) * | 1976-01-16 | 1985-04-20 | Solvay | Processo per la rigenerazione di carta vecchia |
LU74434A1 (fr) * | 1976-02-25 | 1977-09-12 | ||
LU76021A1 (fr) * | 1976-10-15 | 1978-05-16 | ||
SE420430B (sv) * | 1978-02-17 | 1981-10-05 | Mo Och Domsjoe Ab | Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel |
CA1151363A (fr) * | 1979-04-17 | 1983-08-09 | Henri Lemoyne | Methode de defibrage de la pate chimique non blanchie |
DE3005947B1 (de) * | 1980-02-16 | 1981-01-29 | Degussa | Verfahren zur Bleiche von Zellstoffen mittels organischer Persaeure |
US4559103A (en) * | 1982-08-05 | 1985-12-17 | Honshu Seishi Kabushiki Kaisha | Packaging paper and packaging material for packaging metallic material and method of producing the same |
SE451606B (sv) * | 1982-09-14 | 1987-10-19 | Sca Development Ab | Sett vid blekning av hogutbytesmassor medelst peroxider |
US4793898A (en) * | 1985-02-22 | 1988-12-27 | Oy Keskuslaboratorio - Centrallaboratorium Ab | Process for bleaching organic peroxyacid cooked material with an alkaline solution of hydrogen peroxide |
US4883312A (en) * | 1985-11-26 | 1989-11-28 | United Technologies Automotive, Inc. | Panel in-part locators |
US4756800A (en) * | 1986-09-03 | 1988-07-12 | The United States Of America As Represented By The Secretary Of Agriculture | Method for producing salts of monoperoxysulfuric acid and simultaneously bleaching pulp |
SE8700569D0 (sv) * | 1987-02-12 | 1987-02-12 | Josef Kubat | An improved peroxide bleaching method |
CA2053035C (fr) * | 1990-10-12 | 1997-09-30 | Repap Enterprises Inc. | Pates de bois sans chlore, et procede de fabrication |
DE4035813A1 (de) * | 1990-11-10 | 1992-05-14 | Akzo Gmbh | Sauerstoffbleichung |
DE4114134A1 (de) * | 1991-04-30 | 1992-11-05 | Sueddeutsche Kalkstickstoff | Verfahren zur chlorfreien bleiche und delignifizierung von alkalizellstoff |
DE4114135A1 (de) * | 1991-04-30 | 1992-11-05 | Sueddeutsche Kalkstickstoff | Verfahren zur chlorfreien bleiche und delignifizierung von alkalizellstoff |
US6007678A (en) * | 1992-11-27 | 1999-12-28 | Eka Nobel Ab | Process for delignification of lignocellulose-containing pulp with an organic peracid or salts thereof |
BR9307520A (pt) † | 1992-11-27 | 1999-08-31 | Eka Nobel Ab | Processo para o alvejamento de polpa contendo lignocelulose |
SE501325E (sv) * | 1993-01-29 | 1999-06-09 | Kvaerner Pulping Tech | Förfarande för klorfri blekning av massa, varvid massan surgöres med ättiksyra vid behandlingen med komplexbildare |
US6605181B1 (en) * | 1993-10-01 | 2003-08-12 | Kvaerner Pulping Aktiebolag | Peroxide bleach sequence including an acidic bleach stage and including a wash stage |
US20080087390A1 (en) * | 2006-10-11 | 2008-04-17 | Fort James Corporation | Multi-step pulp bleaching |
US8845860B2 (en) | 2010-09-16 | 2014-09-30 | Georgia-Pacific Consumer Products Lp | High brightness pulps from lignin rich waste papers |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1828848A (en) * | 1929-03-09 | 1931-10-27 | Brown Co | Production of chemical wood pulps |
US3085039A (en) * | 1960-08-23 | 1963-04-09 | Fmc Corp | Process for the treatment of wood |
NL293489A (fr) * | 1962-07-16 | |||
US3382149A (en) * | 1964-10-29 | 1968-05-07 | Du Pont | Bleaching of hardwood sulfite pulp with hydrogen peroxide, including pretreatment with alkali |
US3457023A (en) * | 1965-07-07 | 1969-07-22 | Union Carbide Corp | Room-temperature bleaching of textiles with peracetic acid |
US3345250A (en) * | 1966-06-30 | 1967-10-03 | Int Paper Co | Bleaching pulp without direct chlorination by bleaching with chlorine dioxide |
US3720577A (en) * | 1970-05-25 | 1973-03-13 | Int Paper Co | Chlorine dioxide-peracetic acid-chlorine dioxide pulp bleaching sequence |
US3707438A (en) * | 1970-09-15 | 1972-12-26 | Atlantic Richfield Co | Method for the brightening of kraft pulp with tertiary butyl hydroperoxide |
US3645840A (en) * | 1971-01-19 | 1972-02-29 | Atlantic Richfield Co | Method for peroxide bleaching of pulp |
US3719552A (en) * | 1971-06-18 | 1973-03-06 | American Cyanamid Co | Bleaching of lignocellulosic materials with oxygen in the presence of a peroxide |
-
1972
- 1972-04-21 DE DE2219505A patent/DE2219505C3/de not_active Expired
-
1973
- 1973-04-16 US US351783A patent/US3867246A/en not_active Expired - Lifetime
- 1973-04-18 CH CH562173A patent/CH578087A5/xx not_active IP Right Cessation
- 1973-04-19 SE SE7305671A patent/SE405130B/xx unknown
- 1973-04-19 CA CA169,114A patent/CA987456A/en not_active Expired
- 1973-04-20 AT AT359673A patent/AT328289B/de not_active IP Right Cessation
-
1976
- 1976-08-26 BE BE6045647A patent/BE845580Q/fr active
- 1976-10-13 FR FR7630794A patent/FR2367859A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
SE405130B (sv) | 1978-11-20 |
FR2367859A1 (fr) | 1978-05-12 |
DE2219505A1 (de) | 1973-11-08 |
ATA359673A (de) | 1975-05-15 |
CH578087A5 (fr) | 1976-07-30 |
US3867246A (en) | 1975-02-18 |
DE2219505C3 (de) | 1974-10-17 |
BE845580Q (fr) | 1976-12-16 |
AT328289B (de) | 1976-03-10 |
DE2219505B2 (de) | 1974-03-07 |
FR2367859B1 (fr) | 1980-10-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA987456A (en) | Chlorine-free multi-stage bleaching of cellulose | |
CA975508A (en) | Process for bleaching cellulose | |
CA995410A (en) | Process for bleaching cellulose fibres | |
AU462469B2 (en) | A process for bleaching cellulose pulp | |
CA902861A (en) | Bleaching of cellulosic pulp | |
CA1016540A (en) | Oxidation of cellulose | |
CA933307A (en) | Lignin-preserving bleaching of cellulose pulp | |
CA943707A (en) | Delignification of chemical cellulosic pulp | |
CA1019906A (fr) | Procede de blanchiment de la pate a papier | |
AU470457B2 (en) | Bleaching cellulose | |
AU5969473A (en) | Bleaching agent | |
CA864409A (en) | Pulp bleaching process | |
CA968507A (en) | Bleaching of mechanical pulps | |
CA914674A (en) | Acetylation of wood pulp | |
CA899005A (en) | Bleaching of cellulosic pulp | |
CA897360A (en) | Bleaching of wood pulp | |
CA792160A (en) | Bleaching of cellulose pulp | |
CA1004805A (en) | Non-neutral bleaching of pulp | |
AU461389B2 (en) | Bleaching of cellulosic pulp | |
CA975111A (en) | Bleaching cellulosic pulp | |
CA989112A (en) | Bleaching of textiles with chlorine monoxide | |
CA906849A (en) | Treatment of cellulose | |
CA892134A (en) | Bleaching of holograms | |
CA916367A (en) | Method of bleaching | |
CA915360A (en) | Flameproofing of cellulose |