NO904944L - Fremgangsmaate for bleking av tremasse. - Google Patents
Fremgangsmaate for bleking av tremasse.Info
- Publication number
- NO904944L NO904944L NO90904944A NO904944A NO904944L NO 904944 L NO904944 L NO 904944L NO 90904944 A NO90904944 A NO 90904944A NO 904944 A NO904944 A NO 904944A NO 904944 L NO904944 L NO 904944L
- Authority
- NO
- Norway
- Prior art keywords
- tremass
- blacking
- procedure
- 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
- D21C9/1026—Other features in bleaching processes
- D21C9/1042—Use of chelating agents
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/437,482 US5013404A (en) | 1989-11-15 | 1989-11-15 | Process for alkaline peroxide bleaching of wood pulp using a quaternary amine as additive |
Publications (2)
Publication Number | Publication Date |
---|---|
NO904944D0 NO904944D0 (no) | 1990-11-14 |
NO904944L true NO904944L (no) | 1991-05-16 |
Family
ID=23736639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO90904944A NO904944L (no) | 1989-11-15 | 1990-11-14 | Fremgangsmaate for bleking av tremasse. |
Country Status (7)
Country | Link |
---|---|
US (1) | US5013404A (no) |
EP (1) | EP0429241A1 (no) |
JP (1) | JPH03174080A (no) |
BR (1) | BR9005856A (no) |
CA (1) | CA2029923A1 (no) |
FI (1) | FI905640A (no) |
NO (1) | NO904944L (no) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2063351C (en) * | 1992-03-18 | 1996-08-13 | Stanley Alan Heimburger | Process for bleaching hardwood pulp |
JP2937658B2 (ja) * | 1992-10-02 | 1999-08-23 | 日華化学 株式会社 | 故紙の再生処理方法 |
US5560805A (en) * | 1993-07-27 | 1996-10-01 | Hoechst Celanese Corporation | Enhanced decolorization of waste paper with selected amines |
US5580422A (en) * | 1993-07-27 | 1996-12-03 | Hoechst Celanese Corporation | Brightening color dyed wastepaper with a bleaching agent and a quaternary compound |
US5458737A (en) * | 1993-07-27 | 1995-10-17 | Hoechst Celanese Corporation | Quaternary compounds as brightness enhancers |
US5772847A (en) * | 1995-10-24 | 1998-06-30 | Stone-Consolidated (Us) Corporation | Method for forming pulp from processed recycled fibers |
JPH108092A (ja) * | 1996-06-21 | 1998-01-13 | Mitsubishi Paper Mills Ltd | 過酸化物漂白用安定化剤及びそれを用いた繊維系物質の漂白方法 |
US7074299B2 (en) * | 2002-05-01 | 2006-07-11 | Fort James Corporation | Process for using a phloroglucinol color delta to control blending, deinking and bleaching of groundwood-containing secondary pulp |
IL150478A0 (en) * | 2002-06-27 | 2002-12-01 | O P T Internat Ltd | A process for the production of cellulose fiber pulp |
US7351764B2 (en) * | 2004-03-31 | 2008-04-01 | Nalco Company | Methods to enhance brightness of pulp and optimize use of bleaching chemicals |
CA3074198A1 (en) * | 2020-02-28 | 2021-08-28 | Fluid Energy Group Ltd. | Modified methanesulfonic acid and uses thereof |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE795085A (fr) * | 1972-03-10 | 1973-05-29 | Benckiser Knapsack Gmbh | Procede de blanchiment de fibres cellulosiques seules ou en melange avec des fibres synthetiques |
LU68060A1 (no) * | 1973-07-20 | 1975-04-11 | ||
DE2506799B2 (de) * | 1975-02-18 | 1977-03-31 | Basf Ag, 6700 Ludwigshafen | Verfahren zur stabilisierung alkalischer, silikat und erdalkalimetallhaltige peroxidstabilisatoren enthaltender peroxidbleichflotten |
US4239643A (en) * | 1979-01-02 | 1980-12-16 | Monsanto Company | Peroxide stabilization |
US4238282A (en) * | 1979-07-23 | 1980-12-09 | Nalco Chemical Company | Chemical treatments in bleaching stages which increase pulp brightness |
US4614646A (en) * | 1984-12-24 | 1986-09-30 | The Dow Chemical Company | Stabilization of peroxide systems in the presence of alkaline earth metal ions |
US4732650A (en) * | 1986-09-15 | 1988-03-22 | The Dow Chemical Company | Bleaching of cellulosic pulps using hydrogen peroxide |
-
1989
- 1989-11-15 US US07/437,482 patent/US5013404A/en not_active Expired - Fee Related
-
1990
- 1990-11-13 BR BR909005856A patent/BR9005856A/pt unknown
- 1990-11-14 EP EP90312406A patent/EP0429241A1/en not_active Withdrawn
- 1990-11-14 CA CA002029923A patent/CA2029923A1/en not_active Abandoned
- 1990-11-14 NO NO90904944A patent/NO904944L/no unknown
- 1990-11-14 FI FI905640A patent/FI905640A/fi not_active IP Right Cessation
- 1990-11-14 JP JP2306346A patent/JPH03174080A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
CA2029923A1 (en) | 1991-05-16 |
FI905640A (fi) | 1991-05-16 |
NO904944D0 (no) | 1990-11-14 |
JPH03174080A (ja) | 1991-07-29 |
FI905640A0 (fi) | 1990-11-14 |
BR9005856A (pt) | 1991-09-24 |
US5013404A (en) | 1991-05-07 |
EP0429241A1 (en) | 1991-05-29 |
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