FI853492L - Foerfarande foer delignifiering av sulfatcelluloser. - Google Patents
Foerfarande foer delignifiering av sulfatcelluloser.Info
- Publication number
- FI853492L FI853492L FI853492A FI853492A FI853492L FI 853492 L FI853492 L FI 853492L FI 853492 A FI853492 A FI 853492A FI 853492 A FI853492 A FI 853492A FI 853492 L FI853492 L FI 853492L
- Authority
- FI
- Finland
- Prior art keywords
- sulfatcelluloser
- foerfarande foer
- oxygen
- delignifiering
- hydrogen peroxide
- 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
- D21C9/1057—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)
- Superconductors And Manufacturing Methods Therefor (AREA)
- External Artificial Organs (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843446301 DE3446301A1 (de) | 1984-12-19 | 1984-12-19 | Verfahren zur delignifizierung von sulfatzellstoffen |
Publications (2)
Publication Number | Publication Date |
---|---|
FI853492A0 FI853492A0 (fi) | 1985-09-12 |
FI853492L true FI853492L (fi) | 1986-06-20 |
Family
ID=6253194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI853492A FI853492L (fi) | 1984-12-19 | 1985-09-12 | Foerfarande foer delignifiering av sulfatcelluloser. |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0185858B1 (fi) |
JP (1) | JPS61146894A (fi) |
AT (1) | ATE33998T1 (fi) |
DE (2) | DE3446301A1 (fi) |
FI (1) | FI853492L (fi) |
NO (1) | NO853688L (fi) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0863251A1 (en) * | 1997-03-04 | 1998-09-09 | Oji Paper Co., Ltd. | Process for producing bleached pulp |
US5919238A (en) * | 1998-03-04 | 1999-07-06 | Ford Global Technologies, Inc. | Method for aligning a vehicle suspension |
US10243028B2 (en) | 2014-04-08 | 2019-03-26 | Panasonic Intellectual Property Management Co., Ltd. | Organic electroluminescent element and lighting device with buffer layer |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3719552A (en) * | 1971-06-18 | 1973-03-06 | American Cyanamid Co | Bleaching of lignocellulosic materials with oxygen in the presence of a peroxide |
SE420430B (sv) * | 1978-02-17 | 1981-10-05 | Mo Och Domsjoe Ab | Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel |
US4372812A (en) * | 1978-04-07 | 1983-02-08 | International Paper Company | Chlorine free process for bleaching lignocellulosic pulp |
EP0088073A4 (en) * | 1981-09-04 | 1984-01-09 | Weyerhaeuser Co | METHOD FOR TREATING PULP WITH MULTIPLE OXYGEN LEVELS. |
DE3207157C1 (de) * | 1982-02-27 | 1983-06-09 | Degussa Ag, 6000 Frankfurt | Verfahren zur Herstellung von halbgebleichten Zellstoffen |
-
1984
- 1984-12-19 DE DE19843446301 patent/DE3446301A1/de not_active Withdrawn
-
1985
- 1985-09-12 FI FI853492A patent/FI853492L/fi not_active Application Discontinuation
- 1985-09-20 NO NO853688A patent/NO853688L/no unknown
- 1985-09-25 DE DE8585112163T patent/DE3562496D1/de not_active Expired
- 1985-09-25 EP EP85112163A patent/EP0185858B1/de not_active Expired
- 1985-09-25 AT AT85112163T patent/ATE33998T1/de active
- 1985-12-16 JP JP60281267A patent/JPS61146894A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
NO853688L (no) | 1986-06-20 |
DE3562496D1 (en) | 1988-06-09 |
DE3446301A1 (de) | 1986-06-19 |
ATE33998T1 (de) | 1988-05-15 |
EP0185858A1 (de) | 1986-07-02 |
JPS61146894A (ja) | 1986-07-04 |
FI853492A0 (fi) | 1985-09-12 |
EP0185858B1 (de) | 1988-05-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FA | Application withdrawn |
Owner name: DEGUSSA AKTIENGESELLSCHAFT |