DE3667184D1 - Verfahren zum bleichen von chemischen holzpulpen. - Google Patents
Verfahren zum bleichen von chemischen holzpulpen.Info
- Publication number
- DE3667184D1 DE3667184D1 DE8686420266T DE3667184T DE3667184D1 DE 3667184 D1 DE3667184 D1 DE 3667184D1 DE 8686420266 T DE8686420266 T DE 8686420266T DE 3667184 T DE3667184 T DE 3667184T DE 3667184 D1 DE3667184 D1 DE 3667184D1
- Authority
- DE
- Germany
- Prior art keywords
- pulp
- alkaline extraction
- treatment
- bleaching chemical
- chlorine dioxide
- 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.)
- Revoked
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
- D21C9/1026—Other features in bleaching processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Detergent Compositions (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8516332A FR2589494B1 (fr) | 1985-10-30 | 1985-10-30 | Procede de blanchiment de pates papetieres chimiques |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3667184D1 true DE3667184D1 (de) | 1990-01-04 |
Family
ID=9324477
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8686420266T Revoked DE3667184D1 (de) | 1985-10-30 | 1986-10-28 | Verfahren zum bleichen von chemischen holzpulpen. |
DE198686420266T Pending DE222674T1 (de) | 1985-10-30 | 1986-10-28 | Verfahren zum bleichen von chemischen holzpulpen. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE198686420266T Pending DE222674T1 (de) | 1985-10-30 | 1986-10-28 | Verfahren zum bleichen von chemischen holzpulpen. |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0222674B1 (pt) |
JP (1) | JPS62141188A (pt) |
AT (1) | ATE48291T1 (pt) |
AU (1) | AU603556B2 (pt) |
DE (2) | DE3667184D1 (pt) |
ES (1) | ES2000019B3 (pt) |
FI (1) | FI85294B (pt) |
FR (1) | FR2589494B1 (pt) |
NO (1) | NO864319L (pt) |
PT (1) | PT83649B (pt) |
ZA (1) | ZA868275B (pt) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4031597A1 (de) * | 1990-10-05 | 1992-04-09 | Sueddeutsche Kalkstickstoff | Verfahren zur chlorarmen bleiche und delignifizierung von zellstoff |
US6569284B1 (en) * | 1996-09-24 | 2003-05-27 | International Paper Company | Elemental-chlorine-free bleaching process having an initial Eo or Eop stage |
FR3062138B1 (fr) | 2017-01-23 | 2019-06-07 | Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses | Procede de blanchiment d'une pate a papier |
-
1985
- 1985-10-30 FR FR8516332A patent/FR2589494B1/fr not_active Expired
-
1986
- 1986-10-28 ES ES86420266T patent/ES2000019B3/es not_active Expired - Lifetime
- 1986-10-28 EP EP86420266A patent/EP0222674B1/fr not_active Expired
- 1986-10-28 DE DE8686420266T patent/DE3667184D1/de not_active Revoked
- 1986-10-28 AT AT86420266T patent/ATE48291T1/de not_active IP Right Cessation
- 1986-10-28 DE DE198686420266T patent/DE222674T1/de active Pending
- 1986-10-29 NO NO864319A patent/NO864319L/no unknown
- 1986-10-29 PT PT83649A patent/PT83649B/pt not_active IP Right Cessation
- 1986-10-29 AU AU64492/86A patent/AU603556B2/en not_active Ceased
- 1986-10-29 FI FI864411A patent/FI85294B/fi not_active Application Discontinuation
- 1986-10-30 ZA ZA868275A patent/ZA868275B/xx unknown
- 1986-10-30 JP JP61259562A patent/JPS62141188A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
DE222674T1 (de) | 1987-10-15 |
EP0222674A1 (fr) | 1987-05-20 |
ES2000019A4 (es) | 1987-09-16 |
NO864319D0 (no) | 1986-10-29 |
PT83649A (fr) | 1986-11-01 |
PT83649B (pt) | 1989-05-31 |
FI864411A (fi) | 1987-05-01 |
FI85294B (fi) | 1991-12-13 |
NO864319L (no) | 1987-05-04 |
JPH0116958B2 (pt) | 1989-03-28 |
JPS62141188A (ja) | 1987-06-24 |
FR2589494B1 (fr) | 1988-07-29 |
ZA868275B (en) | 1987-06-24 |
AU6449286A (en) | 1987-05-07 |
AU603556B2 (en) | 1990-11-22 |
FI864411A0 (fi) | 1986-10-29 |
EP0222674B1 (fr) | 1989-11-29 |
ES2000019B3 (es) | 1990-03-16 |
FR2589494A1 (fr) | 1987-05-07 |
ATE48291T1 (de) | 1989-12-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8363 | Opposition against the patent | ||
8331 | Complete revocation |