JPS4971202A - - Google Patents
Info
- Publication number
- JPS4971202A JPS4971202A JP48110105A JP11010573A JPS4971202A JP S4971202 A JPS4971202 A JP S4971202A JP 48110105 A JP48110105 A JP 48110105A JP 11010573 A JP11010573 A JP 11010573A JP S4971202 A JPS4971202 A JP S4971202A
- Authority
- JP
- Japan
- 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.)
- Granted
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)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Medicines Containing Plant Substances (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA152,905A CA973661A (en) | 1972-09-29 | 1972-09-29 | Press alkaline extraction of cellulosic pulp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4971202A true JPS4971202A (it) | 1974-07-10 |
| JPS5214326B2 JPS5214326B2 (it) | 1977-04-21 |
Family
ID=4094565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP48110105A Expired JPS5214326B2 (it) | 1972-09-29 | 1973-09-28 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3874992A (it) |
| JP (1) | JPS5214326B2 (it) |
| AR (1) | AR201116A1 (it) |
| BR (1) | BR7307566D0 (it) |
| CA (1) | CA973661A (it) |
| FI (1) | FI63793C (it) |
| FR (1) | FR2201369B1 (it) |
| NO (1) | NO141617C (it) |
| SE (1) | SE405488B (it) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE415581B (sv) * | 1977-04-18 | 1980-10-13 | Mo Och Domsjoe Ab | Forfarande for perocidblekning av hogutbytesmassa |
| US4238281A (en) * | 1979-04-30 | 1980-12-09 | Canadian International Paper Company | Simplified bleaching process |
| US4806203A (en) * | 1985-02-14 | 1989-02-21 | Elton Edward F | Method for alkaline delignification of lignocellulosic fibrous material at a consistency which is raised during reaction |
| US5217574A (en) * | 1989-02-15 | 1993-06-08 | Union Camp Patent Holdings Inc. | Process for oxygen delignifying high consistency pulp by removing and recycling pressate from alkaline pulp |
| US5211811A (en) * | 1989-02-15 | 1993-05-18 | Union Camp Patent Holding, Inc. | Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification |
| US5085734A (en) * | 1989-02-15 | 1992-02-04 | Union Camp Patent Holding, Inc. | Methods of high consistency oxygen delignification using a low consistency alkali pretreatment |
| US5525195A (en) * | 1989-02-15 | 1996-06-11 | Union Camp Patent Holding, Inc. | Process for high consistency delignification using a low consistency alkali pretreatment |
| US5188708A (en) * | 1989-02-15 | 1993-02-23 | Union Camp Patent Holding, Inc. | Process for high consistency oxygen delignification followed by ozone relignification |
| US5173153A (en) * | 1991-01-03 | 1992-12-22 | Union Camp Patent Holding, Inc. | Process for enhanced oxygen delignification using high consistency and a split alkali addition |
| US5409570A (en) * | 1989-02-15 | 1995-04-25 | Union Camp Patent Holding, Inc. | Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone |
| US5011572A (en) * | 1989-05-19 | 1991-04-30 | Fmc Corporation | Two stage process for the oxygen delignification of lignocellulosic fibers with peroxide reinforcement in the first stage |
| FI85293C (sv) * | 1990-05-04 | 1992-03-25 | Poeyry Jaakko & Co Oy | Förfarande för rening och återföring av cellulosafabrikers blekeriavva tten |
| US5164044A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
| US5441603A (en) * | 1990-05-17 | 1995-08-15 | Union Camp Patent Holding, Inc. | Method for chelation of pulp prior to ozone delignification |
| US5164043A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
| US5554259A (en) * | 1993-10-01 | 1996-09-10 | Union Camp Patent Holdings, Inc. | Reduction of salt scale precipitation by control of process stream Ph and salt concentration |
| US5728264A (en) * | 1995-10-25 | 1998-03-17 | Union Camp Patent Holding, Inc. | Avoidance of salt scaling by acidic pulp washing process |
| EP1226179A4 (en) * | 1999-07-02 | 2002-10-29 | Mendell Co Inc Edward | PULP PROCESSING FOR THE PRODUCTION OF MICROCRYSTALLINE CELLULOSE |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2882965A (en) * | 1955-02-23 | 1959-04-21 | Columbia Cellulose Company Ltd | High viscosity, high percentage alpha cellulose from sulfite pulp |
| SE314286B (it) * | 1964-08-07 | 1969-09-01 | Pulp Paper Res Inst | |
| CA834629A (en) * | 1966-09-30 | 1970-02-17 | Amiel W. Brinkley, Jr. | Rapid high consistency bleaching of pulp |
| US3632469A (en) * | 1969-06-05 | 1972-01-04 | Ethyl Corp | Process for the manufacture of dissolving grade pulp |
-
1972
- 1972-09-29 CA CA152,905A patent/CA973661A/en not_active Expired
-
1973
- 1973-09-20 US US399331A patent/US3874992A/en not_active Expired - Lifetime
- 1973-09-21 NO NO3724/73A patent/NO141617C/no unknown
- 1973-09-27 SE SE7313168A patent/SE405488B/xx unknown
- 1973-09-28 FI FI3043/73A patent/FI63793C/fi active
- 1973-09-28 JP JP48110105A patent/JPS5214326B2/ja not_active Expired
- 1973-09-28 BR BR7566/73A patent/BR7307566D0/pt unknown
- 1973-09-28 FR FR7334891A patent/FR2201369B1/fr not_active Expired
- 1973-09-28 AR AR250290A patent/AR201116A1/es active
Also Published As
| Publication number | Publication date |
|---|---|
| NO141617C (no) | 1980-04-09 |
| DE2347398A1 (de) | 1974-04-04 |
| AR201116A1 (es) | 1975-02-14 |
| DE2347398B2 (de) | 1977-01-13 |
| NO141617B (no) | 1980-01-02 |
| FI63793B (fi) | 1983-04-29 |
| CA973661A (en) | 1975-09-02 |
| FR2201369B1 (it) | 1977-03-11 |
| FI63793C (fi) | 1983-08-10 |
| JPS5214326B2 (it) | 1977-04-21 |
| BR7307566D0 (pt) | 1974-09-05 |
| US3874992A (en) | 1975-04-01 |
| SE405488B (sv) | 1978-12-11 |
| FR2201369A1 (it) | 1974-04-26 |