NO131761C - - Google Patents
Info
- Publication number
- NO131761C NO131761C NO3625/69A NO362569A NO131761C NO 131761 C NO131761 C NO 131761C NO 3625/69 A NO3625/69 A NO 3625/69A NO 362569 A NO362569 A NO 362569A NO 131761 C NO131761 C NO 131761C
- Authority
- NO
- Norway
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB44904/68A GB1262655A (en) | 1968-09-20 | 1968-09-20 | Bleaching of wood pulp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NO131761B NO131761B (de) | 1975-04-14 |
| NO131761C true NO131761C (de) | 1977-03-22 |
Family
ID=10435190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO3625/69A NO131761C (de) | 1968-09-20 | 1969-09-10 |
Country Status (9)
| Country | Link |
|---|---|
| AT (1) | AT292442B (de) |
| BR (1) | BR6912545D0 (de) |
| DE (1) | DE1947931C3 (de) |
| FI (1) | FI48859C (de) |
| FR (1) | FR2018562A1 (de) |
| GB (1) | GB1262655A (de) |
| NO (1) | NO131761C (de) |
| SE (1) | SE364322B (de) |
| ZA (1) | ZA696595B (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2572431B1 (fr) * | 1984-10-25 | 1987-12-04 | Centre Tech Ind Papier | Procede pour la preparation des pates papetieres chimiques en vue du blanchiment. |
| SE9900425L (sv) * | 1999-02-09 | 2000-09-04 | Skogsind Tekn Foskningsinst | Förfarande för delignifiering av massa |
| CN118308895A (zh) * | 2015-09-30 | 2024-07-09 | 伊梅里斯矿物有限公司 | 纸浆漂白或纸浆脱木素方法 |
-
1968
- 1968-09-20 GB GB44904/68A patent/GB1262655A/en not_active Expired
-
1969
- 1969-09-10 NO NO3625/69A patent/NO131761C/no unknown
- 1969-09-18 BR BR212545/69A patent/BR6912545D0/pt unknown
- 1969-09-18 ZA ZA696595A patent/ZA696595B/xx unknown
- 1969-09-19 FI FI692692A patent/FI48859C/fi active
- 1969-09-19 FR FR6932066A patent/FR2018562A1/fr not_active Withdrawn
- 1969-09-19 SE SE12927/69A patent/SE364322B/xx unknown
- 1969-09-22 DE DE1947931A patent/DE1947931C3/de not_active Expired
- 1969-09-22 AT AT896469A patent/AT292442B/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2018562A1 (de) | 1970-05-29 |
| DE1947931A1 (de) | 1970-03-26 |
| FI48859B (de) | 1974-09-30 |
| DE1947931C3 (de) | 1975-06-26 |
| ZA696595B (en) | 1971-04-28 |
| FI48859C (fi) | 1975-01-10 |
| AT292442B (de) | 1971-08-25 |
| GB1262655A (en) | 1972-02-02 |
| SE364322B (de) | 1974-02-18 |
| NO131761B (de) | 1975-04-14 |
| DE1947931B2 (de) | 1974-11-14 |
| BR6912545D0 (pt) | 1973-05-03 |