FI862262A0 - Foerfarande foer foerblekning av kemiska cellulosamassor. - Google Patents
Foerfarande foer foerblekning av kemiska cellulosamassor.Info
- Publication number
- FI862262A0 FI862262A0 FI862262A FI862262A FI862262A0 FI 862262 A0 FI862262 A0 FI 862262A0 FI 862262 A FI862262 A FI 862262A FI 862262 A FI862262 A FI 862262A FI 862262 A0 FI862262 A0 FI 862262A0
- Authority
- FI
- Finland
- Prior art keywords
- foerblekning
- cellulosamassor
- kemiska
- foerfarande foer
- foerfarande
- 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
- D21C9/1005—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)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI862262A FI75196C (fi) | 1986-05-28 | 1986-05-28 | Foerfarande foer foerblekning av kemiska cellulosamassor. |
FR8707401A FR2599398B1 (fr) | 1986-05-28 | 1987-05-26 | Procede de preblanchiment de pates chimiques de cellulose |
AT0901387A AT395027B (de) | 1986-05-28 | 1987-05-27 | Verfahren zur vorbleichung chemischer zellulosepulpen |
DE19873790278 DE3790278T1 (fi) | 1986-05-28 | 1987-05-27 | |
PCT/FI1987/000071 WO1987007314A1 (en) | 1986-05-28 | 1987-05-27 | Procedure for prebleaching chemical cellulose pulps |
NO880113A NO167312C (no) | 1986-05-28 | 1988-01-12 | Fremgangsmaate for forbleking av kjemiske cellulosemasser. |
SE8800152A SE8800152D0 (sv) | 1986-05-28 | 1988-01-19 | Forfarande for forblekning av kemisk cellulosamassa |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI862262 | 1986-05-28 | ||
FI862262A FI75196C (fi) | 1986-05-28 | 1986-05-28 | Foerfarande foer foerblekning av kemiska cellulosamassor. |
Publications (4)
Publication Number | Publication Date |
---|---|
FI862262A0 true FI862262A0 (fi) | 1986-05-28 |
FI862262A FI862262A (fi) | 1987-11-29 |
FI75196B FI75196B (fi) | 1988-01-29 |
FI75196C FI75196C (fi) | 1988-05-09 |
Family
ID=8522706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI862262A FI75196C (fi) | 1986-05-28 | 1986-05-28 | Foerfarande foer foerblekning av kemiska cellulosamassor. |
Country Status (6)
Country | Link |
---|---|
AT (1) | AT395027B (fi) |
DE (1) | DE3790278T1 (fi) |
FI (1) | FI75196C (fi) |
FR (1) | FR2599398B1 (fi) |
SE (1) | SE8800152D0 (fi) |
WO (1) | WO1987007314A1 (fi) |
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 (en) * | 1980-06-20 | 1983-12-07 | Battelle Memorial Institute | A method for the delignification of wood and other ligno-cellulosic products |
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/en 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 |
DE3790278T1 (fi) | 1988-06-01 |
SE8800152D0 (sv) | 1988-01-19 |
FR2599398A1 (fr) | 1987-12-04 |
FI75196C (fi) | 1988-05-09 |
WO1987007314A1 (en) | 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 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed |
Owner name: NESTE OY |