AT340765B - MULTI-STAGE PROCESS FOR FULL CHLORINE WHITE CHLORINE - Google Patents
MULTI-STAGE PROCESS FOR FULL CHLORINE WHITE CHLORINEInfo
- Publication number
- AT340765B AT340765B AT861075A AT861075A AT340765B AT 340765 B AT340765 B AT 340765B AT 861075 A AT861075 A AT 861075A AT 861075 A AT861075 A AT 861075A AT 340765 B AT340765 B AT 340765B
- Authority
- AT
- Austria
- Prior art keywords
- chlorine
- full
- stage process
- white
- stage
- 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)
- Cosmetics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2538673A DE2538673C2 (en) | 1975-08-30 | 1975-08-30 | Bleaching of cellulose with considerably reduced use of chlorine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ATA861075A ATA861075A (en) | 1977-04-15 |
| AT340765B true AT340765B (en) | 1978-01-10 |
Family
ID=5955230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT861075A AT340765B (en) | 1975-08-30 | 1975-11-12 | MULTI-STAGE PROCESS FOR FULL CHLORINE WHITE CHLORINE |
Country Status (17)
| Country | Link |
|---|---|
| AR (1) | AR221678A1 (en) |
| AT (1) | AT340765B (en) |
| BE (1) | BE836462R (en) |
| BR (1) | BR7603006A (en) |
| CA (1) | CA1080406A (en) |
| CH (1) | CH620002A5 (en) |
| DE (1) | DE2538673C2 (en) |
| ES (1) | ES443318A1 (en) |
| FI (1) | FI62869C (en) |
| FR (1) | FR2322235A1 (en) |
| GB (1) | GB1544216A (en) |
| IT (1) | IT1055792B (en) |
| NL (1) | NL7513942A (en) |
| NO (1) | NO145344B (en) |
| SE (1) | SE7602842L (en) |
| YU (1) | YU37370B (en) |
| ZA (1) | ZA757822B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2416297A1 (en) * | 1978-01-31 | 1979-08-31 | Europeen Cellulose | Three-stage paper pulp bleaching - giving high whiteness level, by treating with chlorine, hypochlorite or peroxide oxidant and chlorine di:oxide |
| FR2432574A1 (en) * | 1978-08-01 | 1980-02-29 | Europeen Cellulose | PROCESS FOR BLEACHING PAPER PULP |
| FR2572431B1 (en) * | 1984-10-25 | 1987-12-04 | Centre Tech Ind Papier | PROCESS FOR THE PREPARATION OF CHEMICAL PAPER PULP FOR BLEACHING. |
| DE69004492T3 (en) * | 1989-06-06 | 2001-11-15 | Eka Nobel Ab, Bohus | Process for bleaching pulps containing lignocellulose. |
| SE9001481L (en) * | 1990-04-23 | 1991-10-24 | Eka Nobel Ab | REDUCTION OF HALOGEN ORGANIC SUBSTANCES IN BLEACHING WASTE |
| SE466061B (en) * | 1990-04-23 | 1991-12-09 | Eka Nobel Ab | Bleaching of chemical pulp by treatment with first a complexing agent and then a peroxide containing substance |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE753531C (en) * | 1938-11-09 | 1953-05-18 | Degussa | Process for bleaching pulp |
| DE2327900C3 (en) * | 1973-06-01 | 1985-02-07 | Degussa Ag, 6000 Frankfurt | Bleaching of cellulose with considerably reduced use of chlorine |
-
1975
- 1975-08-30 DE DE2538673A patent/DE2538673C2/en not_active Expired
- 1975-11-12 AT AT861075A patent/AT340765B/en not_active IP Right Cessation
- 1975-11-25 FI FI753314A patent/FI62869C/en not_active IP Right Cessation
- 1975-11-28 NL NL7513942A patent/NL7513942A/en not_active Application Discontinuation
- 1975-11-28 YU YU3012/75A patent/YU37370B/en unknown
- 1975-12-03 NO NO754077A patent/NO145344B/en unknown
- 1975-12-09 ES ES443318A patent/ES443318A1/en not_active Expired
- 1975-12-09 BE BE6045289A patent/BE836462R/en not_active IP Right Cessation
- 1975-12-15 ZA ZA757822A patent/ZA757822B/en unknown
-
1976
- 1976-01-05 AR AR261846A patent/AR221678A1/en active
- 1976-01-14 IT IT67078/76A patent/IT1055792B/en active
- 1976-02-05 CA CA245,088A patent/CA1080406A/en not_active Expired
- 1976-02-25 FR FR7605307A patent/FR2322235A1/en active Granted
- 1976-02-27 SE SE7602842A patent/SE7602842L/en unknown
- 1976-04-22 GB GB16311/76A patent/GB1544216A/en not_active Expired
- 1976-05-13 BR BR7603006A patent/BR7603006A/en unknown
- 1976-08-26 CH CH1084076A patent/CH620002A5/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NO754077L (en) | 1977-03-01 |
| ES443318A1 (en) | 1977-05-01 |
| SE7602842L (en) | 1977-03-01 |
| NL7513942A (en) | 1977-03-02 |
| YU37370B (en) | 1984-08-31 |
| DE2538673C2 (en) | 1986-01-16 |
| ATA861075A (en) | 1977-04-15 |
| YU301275A (en) | 1983-04-27 |
| ZA757822B (en) | 1976-11-24 |
| GB1544216A (en) | 1979-04-19 |
| AR221678A1 (en) | 1981-03-13 |
| IT1055792B (en) | 1982-01-11 |
| BE836462R (en) | 1976-06-09 |
| NO145344B (en) | 1981-11-23 |
| BR7603006A (en) | 1977-05-31 |
| FR2322235B1 (en) | 1979-04-06 |
| CA1080406A (en) | 1980-07-01 |
| FI753314A (en) | 1977-03-01 |
| FR2322235A1 (en) | 1977-03-25 |
| FI62869C (en) | 1983-03-10 |
| CH620002A5 (en) | 1980-10-31 |
| FI62869B (en) | 1982-11-30 |
| DE2538673A1 (en) | 1977-03-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ELJ | Ceased due to non-payment of the annual fee |