FI870391A0 - FOERFARANDE FOER BLEKNING AV MEKANISKA MASSOR. - Google Patents
FOERFARANDE FOER BLEKNING AV MEKANISKA MASSOR.Info
- Publication number
- FI870391A0 FI870391A0 FI870391A FI870391A FI870391A0 FI 870391 A0 FI870391 A0 FI 870391A0 FI 870391 A FI870391 A FI 870391A FI 870391 A FI870391 A FI 870391A FI 870391 A0 FI870391 A0 FI 870391A0
- Authority
- FI
- Finland
- Prior art keywords
- mekaniska
- massor
- foerfarande foer
- blekning
- foer 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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
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 |
---|---|---|---|
FR8601465 | 1986-01-30 | ||
FR8601465A FR2593527B1 (en) | 1986-01-30 | 1986-01-30 | PROCESS FOR BLEACHING MECHANICAL PASTA. |
Publications (4)
Publication Number | Publication Date |
---|---|
FI870391A0 true FI870391A0 (en) | 1987-01-29 |
FI870391A FI870391A (en) | 1987-07-31 |
FI87244B FI87244B (en) | 1992-08-31 |
FI87244C FI87244C (en) | 1992-12-10 |
Family
ID=9331755
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI870391A FI87244C (en) | 1986-01-30 | 1987-01-29 | Procedure for bleaching mechanical pulp |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS62191589A (en) |
FI (1) | FI87244C (en) |
FR (1) | FR2593527B1 (en) |
SE (1) | SE467666B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2622221A1 (en) * | 1987-10-22 | 1989-04-28 | Atochem | PROCESS FOR BLEACHING PASTA |
US6605181B1 (en) * | 1993-10-01 | 2003-08-12 | Kvaerner Pulping Aktiebolag | Peroxide bleach sequence including an acidic bleach stage and including a wash stage |
DE19516151A1 (en) * | 1995-05-03 | 1996-11-07 | Sven Siegle | Process for the production of a pulp from cellulosic material, the pulp itself and its use |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE420430B (en) * | 1978-02-17 | 1981-10-05 | Mo Och Domsjoe Ab | PROCEDURE FOR WHEATING AND EXTRACTION OF LIGNOCELLULOSALLY MATERIALS WITH PEROXID CONTAINING BLACKS |
US4410397A (en) * | 1978-04-07 | 1983-10-18 | International Paper Company | Delignification and bleaching process and solution for lignocellulosic pulp with peroxide in the presence of metal additives |
FR2520397A1 (en) * | 1982-01-28 | 1983-07-29 | Centre Tech Ind Papier | PROCESS FOR TREATING CHEMICAL PAPER PASTES |
SE451606B (en) * | 1982-09-14 | 1987-10-19 | Sca Development Ab | VIEW WHITENING OF HOG REPLACEMENT MASSES AVERAGE PEROXIDES |
-
1986
- 1986-01-30 FR FR8601465A patent/FR2593527B1/en not_active Expired
-
1987
- 1987-01-27 SE SE8700313A patent/SE467666B/en not_active IP Right Cessation
- 1987-01-29 FI FI870391A patent/FI87244C/en not_active IP Right Cessation
- 1987-01-30 JP JP2033587A patent/JPS62191589A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH0156195B2 (en) | 1989-11-29 |
JPS62191589A (en) | 1987-08-21 |
SE8700313D0 (en) | 1987-01-27 |
SE8700313L (en) | 1987-07-31 |
FI870391A (en) | 1987-07-31 |
FI87244C (en) | 1992-12-10 |
FR2593527A1 (en) | 1987-07-31 |
SE467666B (en) | 1992-08-24 |
FR2593527B1 (en) | 1988-03-25 |
FI87244B (en) | 1992-08-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed |
Owner name: ATOCHEM |