FR2670513B1 - PROCESS FOR BLEACHING CHEMICAL PAPER PULP BY TWO-STAGE OXYGEN TREATMENT. - Google Patents
PROCESS FOR BLEACHING CHEMICAL PAPER PULP BY TWO-STAGE OXYGEN TREATMENT.Info
- Publication number
- FR2670513B1 FR2670513B1 FR9016202A FR9016202A FR2670513B1 FR 2670513 B1 FR2670513 B1 FR 2670513B1 FR 9016202 A FR9016202 A FR 9016202A FR 9016202 A FR9016202 A FR 9016202A FR 2670513 B1 FR2670513 B1 FR 2670513B1
- Authority
- FR
- France
- Prior art keywords
- paper pulp
- oxygen treatment
- bleaching chemical
- stage oxygen
- chemical paper
- Prior art date
- 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.)
- Expired - Fee Related
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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
-
- 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
- D21C9/1026—Other features in bleaching processes
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Detergent Compositions (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9016202A FR2670513B1 (en) | 1990-12-18 | 1990-12-18 | PROCESS FOR BLEACHING CHEMICAL PAPER PULP BY TWO-STAGE OXYGEN TREATMENT. |
CA002067720A CA2067720A1 (en) | 1990-12-18 | 1992-04-30 | Process for enhancing paper pulp bleaching using ozone, and pulp thus treated |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9016202A FR2670513B1 (en) | 1990-12-18 | 1990-12-18 | PROCESS FOR BLEACHING CHEMICAL PAPER PULP BY TWO-STAGE OXYGEN TREATMENT. |
CA002067720A CA2067720A1 (en) | 1990-12-18 | 1992-04-30 | Process for enhancing paper pulp bleaching using ozone, and pulp thus treated |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2670513A1 FR2670513A1 (en) | 1992-06-19 |
FR2670513B1 true FR2670513B1 (en) | 1993-02-19 |
Family
ID=25675119
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9016202A Expired - Fee Related FR2670513B1 (en) | 1990-12-18 | 1990-12-18 | PROCESS FOR BLEACHING CHEMICAL PAPER PULP BY TWO-STAGE OXYGEN TREATMENT. |
Country Status (2)
Country | Link |
---|---|
CA (1) | CA2067720A1 (en) |
FR (1) | FR2670513B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0949309A1 (en) * | 1998-04-06 | 1999-10-13 | Akzo Nobel N.V. | A method of joining surfaces |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA897361A (en) * | 1969-12-19 | 1972-04-11 | E. Mallett Samuel | Oxygen bleaching process |
-
1990
- 1990-12-18 FR FR9016202A patent/FR2670513B1/en not_active Expired - Fee Related
-
1992
- 1992-04-30 CA CA002067720A patent/CA2067720A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
FR2670513A1 (en) | 1992-06-19 |
CA2067720A1 (en) | 1993-10-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |
Effective date: 20081020 |