SE428939B - Forfarande for delignifiering av ett ligninhaltigt material - Google Patents
Forfarande for delignifiering av ett ligninhaltigt materialInfo
- Publication number
- SE428939B SE428939B SE7603352A SE7603352A SE428939B SE 428939 B SE428939 B SE 428939B SE 7603352 A SE7603352 A SE 7603352A SE 7603352 A SE7603352 A SE 7603352A SE 428939 B SE428939 B SE 428939B
- Authority
- SE
- Sweden
- Prior art keywords
- delignifying
- procedure
- similar material
- similar
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/222—Use of compounds accelerating the pulping processes
-
- 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
- D21C9/1026—Other features in bleaching processes
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Gas Separation By Absorption (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI750799A FI51833C (sv) | 1975-03-18 | 1975-03-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7603352L SE7603352L (sv) | 1976-09-19 |
SE428939B true SE428939B (sv) | 1983-08-01 |
Family
ID=8509062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7603352A SE428939B (sv) | 1975-03-18 | 1976-03-17 | Forfarande for delignifiering av ett ligninhaltigt material |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS51119801A (sv) |
CA (1) | CA1088261A (sv) |
DE (1) | DE2610891A1 (sv) |
FI (1) | FI51833C (sv) |
FR (1) | FR2304718A1 (sv) |
NO (1) | NO760908L (sv) |
SE (1) | SE428939B (sv) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4036681A (en) * | 1976-12-14 | 1977-07-19 | Canadian Industries, Ltd. | Delignification of lignocellulosic material with an alkaline pulping liquor containing a Diels Alder adduct of benzoquinone or naphthoquinone |
CA1094264A (en) * | 1976-12-14 | 1981-01-27 | Canadian Industries Limited | Delignification of lignocellulosic material with a soda liquor containing a cyclic keto compound and a nitro aromatic compound |
US4036680A (en) * | 1976-12-14 | 1977-07-19 | Canadian Industries, Ltd. | Delignification of lignocellulosic material with a soda pulping liquor containing a Diels Alder adduct of benzoquinone or naphthoquinone in admixture with a nitro aromatic compound |
JPS5512806A (en) * | 1978-07-04 | 1980-01-29 | Oji Paper Co | Alkali pulp producing method |
SE413785B (sv) * | 1978-09-22 | 1980-06-23 | Mo Och Domsjoe Ab | Forfarande for uppslutning av lignocellulosahaltiga material genom alkalisk kokning i nervaro av ett tillsatsemne av redoxtyp |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI52877B (sv) * | 1972-11-16 | 1977-08-31 | Ahlstroem Oy |
-
1975
- 1975-03-18 FI FI750799A patent/FI51833C/fi not_active IP Right Cessation
-
1976
- 1976-03-16 DE DE19762610891 patent/DE2610891A1/de not_active Ceased
- 1976-03-16 NO NO760908A patent/NO760908L/no unknown
- 1976-03-17 SE SE7603352A patent/SE428939B/sv not_active IP Right Cessation
- 1976-03-17 CA CA248,067A patent/CA1088261A/en not_active Expired
- 1976-03-18 FR FR7607856A patent/FR2304718A1/fr active Granted
- 1976-03-18 JP JP51028696A patent/JPS51119801A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
NO760908L (sv) | 1976-09-21 |
FI750799A (sv) | 1976-09-19 |
DE2610891A1 (de) | 1976-09-30 |
FR2304718A1 (fr) | 1976-10-15 |
FR2304718B1 (sv) | 1979-08-31 |
FI51833B (sv) | 1976-12-31 |
JPS51119801A (en) | 1976-10-20 |
FI51833C (sv) | 1978-01-24 |
CA1088261A (en) | 1980-10-28 |
SE7603352L (sv) | 1976-09-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |
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