SE452483B - Forfarande for delignifiering av sulfatmassa - Google Patents
Forfarande for delignifiering av sulfatmassaInfo
- Publication number
- SE452483B SE452483B SE8500472A SE8500472A SE452483B SE 452483 B SE452483 B SE 452483B SE 8500472 A SE8500472 A SE 8500472A SE 8500472 A SE8500472 A SE 8500472A SE 452483 B SE452483 B SE 452483B
- Authority
- SE
- Sweden
- Prior art keywords
- pulp
- treatment
- polysulphide
- polysulfide
- weight
- 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
- D21C9/001—Modification of pulp properties
- D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
-
- 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
- D21C9/001—Modification of pulp properties
- D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
- D21C9/004—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives inorganic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8500472A SE452483B (sv) | 1985-02-01 | 1985-02-01 | Forfarande for delignifiering av sulfatmassa |
FI860421A FI81135C (fi) | 1985-02-01 | 1986-01-29 | Foerfarande foer delignifiering av sulfatmassa. |
CA000500799A CA1268906A (en) | 1985-02-01 | 1986-01-31 | Procedure for delignification of sulphate pulp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8500472A SE452483B (sv) | 1985-02-01 | 1985-02-01 | Forfarande for delignifiering av sulfatmassa |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8500472D0 SE8500472D0 (sv) | 1985-02-01 |
SE8500472L SE8500472L (sv) | 1986-08-02 |
SE452483B true SE452483B (sv) | 1987-11-30 |
Family
ID=20358977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8500472A SE452483B (sv) | 1985-02-01 | 1985-02-01 | Forfarande for delignifiering av sulfatmassa |
Country Status (3)
Country | Link |
---|---|
CA (1) | CA1268906A (fi) |
FI (1) | FI81135C (fi) |
SE (1) | SE452483B (fi) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1989003451A1 (en) * | 1987-10-16 | 1989-04-20 | Sca Development Aktiebolag | Method at bleaching cellulose pulp |
-
1985
- 1985-02-01 SE SE8500472A patent/SE452483B/sv not_active IP Right Cessation
-
1986
- 1986-01-29 FI FI860421A patent/FI81135C/fi not_active IP Right Cessation
- 1986-01-31 CA CA000500799A patent/CA1268906A/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1989003451A1 (en) * | 1987-10-16 | 1989-04-20 | Sca Development Aktiebolag | Method at bleaching cellulose pulp |
Also Published As
Publication number | Publication date |
---|---|
FI860421A (fi) | 1986-08-02 |
CA1268906A (en) | 1990-05-15 |
SE8500472L (sv) | 1986-08-02 |
FI81135C (fi) | 1990-09-10 |
SE8500472D0 (sv) | 1985-02-01 |
FI81135B (fi) | 1990-05-31 |
FI860421A0 (fi) | 1986-01-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
Ref document number: 8500472-9 Effective date: 19920904 Format of ref document f/p: F |