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)
- Noodles (AREA)
- Glass Compositions (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (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 (de) |
JP (1) | JPS63256786A (de) |
AT (1) | ATE84581T1 (de) |
AU (1) | AU606930B2 (de) |
CA (1) | CA1310797C (de) |
DE (2) | DE3877403T2 (de) |
ES (1) | ES2004846T3 (de) |
FI (1) | FI93749C (de) |
FR (1) | FR2613388B1 (de) |
NO (1) | NO173886C (de) |
NZ (1) | NZ224144A (de) |
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 |
ES2038097T5 (es) * | 1989-06-06 | 2001-05-01 | Eka Chemicals Ab | Procedimiento para blanquear pastas papeleras que contienen lignocelulosa. |
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. |
SE9001481L (sv) * | 1990-04-23 | 1991-10-24 | Eka Nobel Ab | Reduktion av halogenorganiska foereningar i blekeriavlopp |
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 |
FR2661431B1 (fr) * | 1990-04-30 | 1992-07-17 | Atochem | Procede de blanchiment au peroxyde de l'hydrogene de pates a papier a haut rendement. |
FR2661430B1 (fr) * | 1990-04-30 | 1992-07-17 | Atochem | Procede de blanchiment au peroxyde d'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 |
JP4580343B2 (ja) * | 2003-10-02 | 2010-11-10 | アンドリッツ インコーポレーテッド | リファイナーブローライン処理を伴うアルカリ過酸化物を用いた多段階メカニカルパルプ化方法 |
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 (de) * | 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 DE DE8888420102T patent/DE3877403T2/de not_active Expired - Fee Related
- 1988-03-29 DE DE198888420102T patent/DE285530T1/de active Pending
- 1988-03-29 NO NO881404A patent/NO173886C/no unknown
- 1988-03-29 ES ES198888420102T patent/ES2004846T3/es not_active Expired - Lifetime
- 1988-03-29 AT AT88420102T patent/ATE84581T1/de active
- 1988-03-29 EP EP88420102A patent/EP0285530B1/de not_active Expired - Lifetime
- 1988-03-31 FI FI881544A patent/FI93749C/fi not_active IP Right Cessation
- 1988-03-31 CA CA000563118A patent/CA1310797C/fr not_active Expired - Lifetime
- 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 (de) | 1993-01-13 |
EP0285530A1 (de) | 1988-10-05 |
ES2004846T3 (es) | 1993-06-16 |
JPH0156197B2 (de) | 1989-11-29 |
CA1310797C (fr) | 1992-12-01 |
DE3877403T2 (de) | 1993-05-19 |
ES2004846A4 (es) | 1989-02-16 |
FI881544A (fi) | 1988-10-03 |
DE3877403D1 (de) | 1993-02-25 |
ATE84581T1 (de) | 1993-01-15 |
FR2613388A1 (fr) | 1988-10-07 |
FI93749B (fi) | 1995-02-15 |
NO881404D0 (no) | 1988-03-29 |
NZ224144A (en) | 1989-07-27 |
AU1406788A (en) | 1988-10-06 |
AU606930B2 (en) | 1991-02-21 |
NO173886C (no) | 1994-02-16 |
NO173886B (no) | 1993-11-08 |
JPS63256786A (ja) | 1988-10-24 |
FR2613388B1 (fr) | 1990-05-04 |
FI881544A0 (fi) | 1988-03-31 |
NO881404L (no) | 1988-10-03 |
DE285530T1 (de) | 1989-03-30 |
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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. |