FR2333892A1 - Procede chimique d'extraction de la cellulose des pailles de cereales, roseaux, alfa, bois tendre et resineux par solution sodique agrementee d'un catalyseur negatif soit un corps reducteur reagissant sur l'hydrate de sodium. adjonction d'un complement de purification de la cellulose obtenue par une solution acide - Google Patents
Procede chimique d'extraction de la cellulose des pailles de cereales, roseaux, alfa, bois tendre et resineux par solution sodique agrementee d'un catalyseur negatif soit un corps reducteur reagissant sur l'hydrate de sodium. adjonction d'un complement de purification de la cellulose obtenue par une solution acideInfo
- Publication number
- FR2333892A1 FR2333892A1 FR7537532A FR7537532A FR2333892A1 FR 2333892 A1 FR2333892 A1 FR 2333892A1 FR 7537532 A FR7537532 A FR 7537532A FR 7537532 A FR7537532 A FR 7537532A FR 2333892 A1 FR2333892 A1 FR 2333892A1
- Authority
- FR
- France
- Prior art keywords
- delignification
- contg
- prods
- sodium hydroxide
- cellulose
- 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.)
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/222—Use of compounds accelerating the pulping processes
-
- 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
- D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
- D21C9/083—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching with inorganic compounds
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7537532A FR2333892A1 (fr) | 1975-12-04 | 1975-12-04 | Procede chimique d'extraction de la cellulose des pailles de cereales, roseaux, alfa, bois tendre et resineux par solution sodique agrementee d'un catalyseur negatif soit un corps reducteur reagissant sur l'hydrate de sodium. adjonction d'un complement de purification de la cellulose obtenue par une solution acide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7537532A FR2333892A1 (fr) | 1975-12-04 | 1975-12-04 | Procede chimique d'extraction de la cellulose des pailles de cereales, roseaux, alfa, bois tendre et resineux par solution sodique agrementee d'un catalyseur negatif soit un corps reducteur reagissant sur l'hydrate de sodium. adjonction d'un complement de purification de la cellulose obtenue par une solution acide |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2333892A1 true FR2333892A1 (fr) | 1977-07-01 |
FR2333892B1 FR2333892B1 (fr) | 1978-06-30 |
Family
ID=9163459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7537532A Granted FR2333892A1 (fr) | 1975-12-04 | 1975-12-04 | Procede chimique d'extraction de la cellulose des pailles de cereales, roseaux, alfa, bois tendre et resineux par solution sodique agrementee d'un catalyseur negatif soit un corps reducteur reagissant sur l'hydrate de sodium. adjonction d'un complement de purification de la cellulose obtenue par une solution acide |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2333892A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0012775A1 (fr) * | 1978-12-20 | 1980-07-09 | Eric S. Prior | Procédé pour le lessivage d'une matière ligno-cellulosique |
US4218284A (en) * | 1977-07-25 | 1980-08-19 | Mo Och Domsjo Aktiebolag | Process for the inhibition of the formation of deposits in cellulose pulping and cellulose pulp treating processes |
EP0022881A1 (fr) * | 1979-07-19 | 1981-01-28 | Eric S. Prior | Procédé accéléré de mise en pâte |
WO1984004937A1 (fr) * | 1983-06-06 | 1984-12-20 | Eric S Prior | Procede de pulpation chimique d'un materiau lignocellulosique |
-
1975
- 1975-12-04 FR FR7537532A patent/FR2333892A1/fr active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4218284A (en) * | 1977-07-25 | 1980-08-19 | Mo Och Domsjo Aktiebolag | Process for the inhibition of the formation of deposits in cellulose pulping and cellulose pulp treating processes |
EP0012775A1 (fr) * | 1978-12-20 | 1980-07-09 | Eric S. Prior | Procédé pour le lessivage d'une matière ligno-cellulosique |
EP0022881A1 (fr) * | 1979-07-19 | 1981-01-28 | Eric S. Prior | Procédé accéléré de mise en pâte |
WO1981000267A1 (fr) * | 1979-07-19 | 1981-02-05 | E Prior | Procede accelere de reduction en pate |
WO1984004937A1 (fr) * | 1983-06-06 | 1984-12-20 | Eric S Prior | Procede de pulpation chimique d'un materiau lignocellulosique |
Also Published As
Publication number | Publication date |
---|---|
FR2333892B1 (fr) | 1978-06-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |