FI821265A0 - Foerfarande foer blekning av kemiskt framstaelld massa - Google Patents
Foerfarande foer blekning av kemiskt framstaelld massaInfo
- Publication number
- FI821265A0 FI821265A0 FI821265A FI821265A FI821265A0 FI 821265 A0 FI821265 A0 FI 821265A0 FI 821265 A FI821265 A FI 821265A FI 821265 A FI821265 A FI 821265A FI 821265 A0 FI821265 A0 FI 821265A0
- Authority
- FI
- Finland
- Prior art keywords
- kemiskt
- framstaelld
- massa
- foerfarande 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
- D21C9/1063—Bleaching ; Apparatus therefor with compounds not otherwise provided for, e.g. activated gases
-
- 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)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3118384A DE3118384C1 (de) | 1981-05-09 | 1981-05-09 | Verfahren zum Bleichen von chemisch hergestelltem Zellstoff mit Ozon |
Publications (1)
Publication Number | Publication Date |
---|---|
FI821265A0 true FI821265A0 (fi) | 1982-04-08 |
Family
ID=6131844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI821265A FI821265A0 (fi) | 1981-05-09 | 1982-04-08 | Foerfarande foer blekning av kemiskt framstaelld massa |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS57191388A (fi) |
AT (1) | ATA167682A (fi) |
BR (1) | BR8202532A (fi) |
DE (1) | DE3118384C1 (fi) |
FI (1) | FI821265A0 (fi) |
FR (1) | FR2505377A1 (fi) |
NO (1) | NO821525L (fi) |
SE (1) | SE8202603L (fi) |
ZA (1) | ZA823048B (fi) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT404740B (de) * | 1989-10-30 | 1999-02-25 | Chemiefaser Lenzing Ag | Verfahren zum chlorfreien bleichen von zellstoffen |
DE4107356C1 (fi) * | 1991-03-08 | 1992-11-05 | Acetocell Gmbh & Co Kg, 7162 Gschwend, De | |
US5364503A (en) * | 1992-02-20 | 1994-11-15 | Macmillan Bloedel Limited | Nitric oxide treatment for ozone bleaching |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR432552A (fr) * | 1911-07-25 | 1911-12-09 | Claude Achilles Meygret | Perfectionnements dans le blanchiment des fibres végétales, des pulpes végétales et leur équivalent |
FR2158873A5 (en) * | 1972-10-09 | 1973-06-15 | Bourit Jean Pierre | Bleaching of wood cellulose - using nitrogen oxides |
GB1505070A (en) * | 1974-06-11 | 1978-03-22 | Canadian Ind | Process for bleaching of lignocellulosic material |
CA1070909A (en) * | 1976-05-04 | 1980-02-05 | Canadian Industries Limited | Nitrogen dioxide-oxygen delignification |
FI61215B (fi) * | 1976-11-23 | 1982-02-26 | Defibrator Ab | Saett och anordning att kontinuerligt framstaella lignocellulosahaltiga fibermaterial |
-
1981
- 1981-05-09 DE DE3118384A patent/DE3118384C1/de not_active Expired
-
1982
- 1982-03-31 FR FR8205593A patent/FR2505377A1/fr not_active Withdrawn
- 1982-04-08 FI FI821265A patent/FI821265A0/fi not_active Application Discontinuation
- 1982-04-26 SE SE8202603A patent/SE8202603L/ not_active Application Discontinuation
- 1982-04-29 AT AT0167682A patent/ATA167682A/de not_active IP Right Cessation
- 1982-05-03 BR BR8202532A patent/BR8202532A/pt unknown
- 1982-05-04 ZA ZA823048A patent/ZA823048B/xx unknown
- 1982-05-04 JP JP57073504A patent/JPS57191388A/ja active Pending
- 1982-05-07 NO NO821525A patent/NO821525L/no unknown
Also Published As
Publication number | Publication date |
---|---|
DE3118384C1 (de) | 1982-11-11 |
NO821525L (no) | 1982-11-10 |
FR2505377A1 (fr) | 1982-11-12 |
SE8202603L (sv) | 1982-11-10 |
ATA167682A (de) | 1985-04-15 |
JPS57191388A (en) | 1982-11-25 |
ZA823048B (en) | 1983-03-30 |
BR8202532A (pt) | 1983-04-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD | Application lapsed |
Owner name: MANNESMANN AKTIENGESELLSCHAFT |