FR742062A - - Google Patents
Info
- Publication number
- FR742062A FR742062A FR742062DA FR742062A FR 742062 A FR742062 A FR 742062A FR 742062D A FR742062D A FR 742062DA FR 742062 A FR742062 A FR 742062A
- Authority
- FR
- France
- 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.)
- Expired
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
- D21C9/08—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
-
- 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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S162/00—Paper making and fiber liberation
- Y10S162/05—Alpha cellulose
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 |
|---|---|---|---|
| FR1968223X | 1931-11-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR742062A true FR742062A (pt) | 1933-02-24 |
Family
ID=9682653
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR742062D Expired FR742062A (pt) | 1931-11-25 | ||
| FR43006D Expired FR43006E (fr) | 1931-11-25 | 1932-10-15 | Procédé de traitement de la pâte à papier, permettant de transformer la pâte à la soude ou au sulfate en pâte facilement blanchissable |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR43006D Expired FR43006E (fr) | 1931-11-25 | 1932-10-15 | Procédé de traitement de la pâte à papier, permettant de transformer la pâte à la soude ou au sulfate en pâte facilement blanchissable |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1968223A (pt) |
| FR (2) | FR43006E (pt) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2805118A (en) * | 1953-08-07 | 1957-09-03 | Lawrence Walter Phalti | Multistage process bleaching of alkaline-process wood pulps including an acid sour between two terminal alkaline hypochlorite stages |
| US3174896A (en) * | 1961-12-14 | 1965-03-23 | Rayonier Inc | Treatment of spent caustic solution |
| BR102013031788A2 (pt) * | 2013-12-10 | 2016-05-24 | César Augusto Dumont Labuto | processo e produtos para resistência material (física, química e biológica) a variações de temperatura e pressão (naturais, acidentais ou controladas), ao calor e ao fogo, ao contágio, criação, consumo e propagação destes, à degradação de materiais, à combustão, à pirofagia, à volatização, à emissão de gases, à liberação de carbono, ao centelhamento e à explosão, bem como para permitir a síntese controlada de estruturas, incarbonização, termo impressões e o seu uso |
-
0
- FR FR742062D patent/FR742062A/fr not_active Expired
-
1932
- 1932-10-15 FR FR43006D patent/FR43006E/fr not_active Expired
- 1932-11-23 US US644135A patent/US1968223A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR43006E (fr) | 1934-01-25 |
| US1968223A (en) | 1934-07-31 |