FI93749C - Menetelmä mekaanisen massan valmistamiseksi - Google Patents
Menetelmä mekaanisen massan valmistamiseksi Download PDFInfo
- Publication number
- FI93749C FI93749C FI881544A FI881544A FI93749C FI 93749 C FI93749 C FI 93749C FI 881544 A FI881544 A FI 881544A FI 881544 A FI881544 A FI 881544A FI 93749 C FI93749 C FI 93749C
- Authority
- FI
- Finland
- Prior art keywords
- hydrogen peroxide
- pulp
- process according
- temperature
- sequestering agent
- 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
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Detergent Compositions (AREA)
- Treatment Of Fiber Materials (AREA)
- Dental Preparations (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Glass Compositions (AREA)
- Noodles (AREA)
- Seasonings (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8704844A FR2613388B1 (fr) | 1987-04-02 | 1987-04-02 | Procede de blanchiment de pates |
FR8704844 | 1987-04-02 |
Publications (4)
Publication Number | Publication Date |
---|---|
FI881544A0 FI881544A0 (fi) | 1988-03-31 |
FI881544A FI881544A (fi) | 1988-10-03 |
FI93749B FI93749B (fi) | 1995-02-15 |
FI93749C true FI93749C (fi) | 1995-05-26 |
Family
ID=9349862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI881544A FI93749C (fi) | 1987-04-02 | 1988-03-31 | Menetelmä mekaanisen massan valmistamiseksi |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0285530B1 (no) |
JP (1) | JPS63256786A (no) |
AT (1) | ATE84581T1 (no) |
AU (1) | AU606930B2 (no) |
CA (1) | CA1310797C (no) |
DE (2) | DE3877403T2 (no) |
ES (1) | ES2004846T3 (no) |
FI (1) | FI93749C (no) |
FR (1) | FR2613388B1 (no) |
NO (1) | NO173886C (no) |
NZ (1) | NZ224144A (no) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2647641B1 (fr) * | 1989-06-05 | 1992-01-17 | Atochem | Procede de fabrication de pulpes vegetales blanchies |
EP0402335B2 (en) * | 1989-06-06 | 2001-03-14 | Eka Chemicals AB | Process for bleaching lignocellulose-containing pulps |
SE467006B (sv) | 1989-06-06 | 1992-05-11 | Eka Nobel Ab | Blekning av kemisk massa med peroxid varvid massan foerst behandlas med en komplexbildare |
FR2659363B1 (fr) * | 1990-03-07 | 1996-04-19 | Atochem | Procede de preparation de pates a haut rendement blanchies. |
SE466061B (sv) * | 1990-04-23 | 1991-12-09 | Eka Nobel Ab | Blekning av kemisk massa genom behandling med foerst ett komplexbildande aemne och sedan ett peroxidinnehaallande aemne |
SE9001481L (sv) * | 1990-04-23 | 1991-10-24 | Eka Nobel Ab | Reduktion av halogenorganiska foereningar i blekeriavlopp |
FR2661430B1 (fr) * | 1990-04-30 | 1992-07-17 | Atochem | Procede de blanchiment au peroxyde d'hydrogene de pates a papier a haut rendement. |
FR2661431B1 (fr) * | 1990-04-30 | 1992-07-17 | Atochem | Procede de blanchiment au peroxyde de l'hydrogene de pates a papier a haut rendement. |
SE468355B (sv) * | 1991-04-30 | 1992-12-21 | Eka Nobel Ab | Blekning av kemisk massa genom behandling med komplexbildare och ozon |
ZA955290B (en) * | 1994-07-11 | 1996-12-27 | Ingersoll Rand Co | Peroxide bleaching process for cellulosic and lignocellulosic material |
SE0950616L (sv) * | 2003-10-02 | 2009-08-27 | Andritz Inc | Flerstegsframställning av mekanisk massa med AP genom blåslinjebehandling med raffinör |
US8298373B2 (en) | 2008-02-07 | 2012-10-30 | University Of New Brunswick | Combined process of peroxide bleaching of wood pulps and addition of optical brightening agents |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL202075A (no) * | 1954-11-19 | Fmc Corp | ||
US3251731A (en) * | 1963-02-11 | 1966-05-17 | Andrew J Gard | Bleaching of wood pulp with a sequestering agent and hydrogen peroxide |
JPS5344563A (en) * | 1976-10-05 | 1978-04-21 | Ouchi Shinkou Kagaku Kougiyou | Preparation of benzothiazolylsulfenamide |
FI61215B (fi) * | 1976-11-23 | 1982-02-26 | Defibrator Ab | Saett och anordning att kontinuerligt framstaella lignocellulosahaltiga fibermaterial |
-
1987
- 1987-04-02 FR FR8704844A patent/FR2613388B1/fr not_active Expired - Lifetime
-
1988
- 1988-03-29 AT AT88420102T patent/ATE84581T1/de active
- 1988-03-29 DE DE8888420102T patent/DE3877403T2/de not_active Expired - Fee Related
- 1988-03-29 ES ES198888420102T patent/ES2004846T3/es not_active Expired - Lifetime
- 1988-03-29 NO NO881404A patent/NO173886C/no unknown
- 1988-03-29 EP EP88420102A patent/EP0285530B1/fr not_active Expired - Lifetime
- 1988-03-29 DE DE198888420102T patent/DE285530T1/de active Pending
- 1988-03-31 CA CA000563118A patent/CA1310797C/fr not_active Expired - Lifetime
- 1988-03-31 FI FI881544A patent/FI93749C/fi not_active IP Right Cessation
- 1988-03-31 AU AU14067/88A patent/AU606930B2/en not_active Ceased
- 1988-04-02 JP JP63082116A patent/JPS63256786A/ja active Granted
- 1988-04-06 NZ NZ224144A patent/NZ224144A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
EP0285530B1 (fr) | 1993-01-13 |
NO173886B (no) | 1993-11-08 |
FI93749B (fi) | 1995-02-15 |
FR2613388B1 (fr) | 1990-05-04 |
ES2004846A4 (es) | 1989-02-16 |
EP0285530A1 (fr) | 1988-10-05 |
CA1310797C (fr) | 1992-12-01 |
AU606930B2 (en) | 1991-02-21 |
DE3877403D1 (de) | 1993-02-25 |
DE3877403T2 (de) | 1993-05-19 |
ES2004846T3 (es) | 1993-06-16 |
JPS63256786A (ja) | 1988-10-24 |
FI881544A (fi) | 1988-10-03 |
DE285530T1 (de) | 1989-03-30 |
NO881404L (no) | 1988-10-03 |
NO173886C (no) | 1994-02-16 |
AU1406788A (en) | 1988-10-06 |
JPH0156197B2 (no) | 1989-11-29 |
FI881544A0 (fi) | 1988-03-31 |
NO881404D0 (no) | 1988-03-29 |
NZ224144A (en) | 1989-07-27 |
ATE84581T1 (de) | 1993-01-15 |
FR2613388A1 (fr) | 1988-10-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
HC | Name/ company changed in application |
Owner name: ELF ATOCHEM S.A. |
|
BB | Publication of examined application | ||
MM | Patent lapsed |
Owner name: ELF ATOCHEM S.A. |