DE3790278T1 - - Google Patents
Info
- Publication number
- DE3790278T1 DE3790278T1 DE19873790278 DE3790278T DE3790278T1 DE 3790278 T1 DE3790278 T1 DE 3790278T1 DE 19873790278 DE19873790278 DE 19873790278 DE 3790278 T DE3790278 T DE 3790278T DE 3790278 T1 DE3790278 T1 DE 3790278T1
- Authority
- DE
- Germany
- 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.)
- Withdrawn
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
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI862262A FI75196C (fi) | 1986-05-28 | 1986-05-28 | Foerfarande foer foerblekning av kemiska cellulosamassor. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3790278T1 true DE3790278T1 (fr) | 1988-06-01 |
Family
ID=8522706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19873790278 Withdrawn DE3790278T1 (fr) | 1986-05-28 | 1987-05-27 |
Country Status (6)
Country | Link |
---|---|
AT (1) | AT395027B (fr) |
DE (1) | DE3790278T1 (fr) |
FI (1) | FI75196C (fr) |
FR (1) | FR2599398B1 (fr) |
SE (1) | SE8800152D0 (fr) |
WO (1) | WO1987007314A1 (fr) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE412235C (de) * | 1924-02-27 | 1925-04-17 | Armin Hillmer | Verfahren zum Herausloesen des Lignins aus ligninhaltigen Zellulosefasern, Holz usw.mit Phenolen |
US1705424A (en) * | 1924-09-30 | 1929-03-12 | Strecker Otto Carl | Process for the production of cellulose by decomposition of vegetable fibers |
DE2229673A1 (de) * | 1972-06-19 | 1974-01-17 | Schweers | Verfahren zur herstellung von phenolzellstoff |
EP0043342B1 (fr) * | 1980-06-20 | 1983-12-07 | Battelle Memorial Institute | Méthode pour la délignification du bois et autres produits ligno-cellulosiques |
US4295928A (en) * | 1980-08-07 | 1981-10-20 | Nalco Chemical Company | Phenolic compounds as viscosity preservatives during hypochlorite pulp bleaching |
-
1986
- 1986-05-28 FI FI862262A patent/FI75196C/fi not_active IP Right Cessation
-
1987
- 1987-05-26 FR FR8707401A patent/FR2599398B1/fr not_active Expired
- 1987-05-27 AT AT0901387A patent/AT395027B/de not_active IP Right Cessation
- 1987-05-27 DE DE19873790278 patent/DE3790278T1/de not_active Withdrawn
- 1987-05-27 WO PCT/FI1987/000071 patent/WO1987007314A1/fr active Application Filing
-
1988
- 1988-01-19 SE SE8800152A patent/SE8800152D0/xx not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
SE8800152L (sv) | 1988-01-19 |
FI862262A0 (fi) | 1986-05-28 |
SE8800152D0 (sv) | 1988-01-19 |
FR2599398A1 (fr) | 1987-12-04 |
FI75196C (fi) | 1988-05-09 |
WO1987007314A1 (fr) | 1987-12-03 |
ATA901387A (de) | 1992-01-15 |
FR2599398B1 (fr) | 1989-01-13 |
AT395027B (de) | 1992-08-25 |
FI75196B (fi) | 1988-01-29 |
FI862262A (fi) | 1987-11-29 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8128 | New person/name/address of the agent |
Representative=s name: TIEDTKE, H., DIPL.-ING. BUEHLING, G., DIPL.-CHEM. |
|
8139 | Disposal/non-payment of the annual fee |