NL58741C - - Google Patents
Info
- Publication number
- NL58741C NL58741C NL58741DA NL58741C NL 58741 C NL58741 C NL 58741C NL 58741D A NL58741D A NL 58741DA NL 58741 C NL58741 C NL 58741C
- Authority
- NL
- Netherlands
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
- D21H17/15—Polycarboxylic acids, e.g. maleic acid
-
- 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
- D21C9/08—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
- D21C9/086—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 organic compounds or compositions comprising organic compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/66—Salts, e.g. alums
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEC55954D DE740833C (de) | 1940-08-19 | 1940-08-19 | Verfahren zur Verhuetung von Harzausscheidung bei der Papierherstellung |
| DEC56402D DE742617C (de) | 1941-03-28 | 1941-03-28 | Verfahren zur Verhuetung von Harzausscheidungen bei der Papierherstellung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL58741C true NL58741C (no) |
Family
ID=25970490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL58741D NL58741C (no) | 1940-08-19 |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH226936A (no) |
| FR (1) | FR874759A (no) |
| NL (1) | NL58741C (no) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB770389A (en) * | 1954-06-18 | 1957-03-20 | Kopparfors Ab | A method of preventing depositions of pitch from sulphite pulp |
| GB769849A (en) * | 1955-03-09 | 1957-03-13 | Kopparfors Ab | A method of preventing depositions of pitch from mechanical pulp and semi-pulp |
| DE1064801B (de) * | 1956-10-26 | 1959-09-03 | Benckiser Gmbh Joh A | Verfahren zur Bekaempfung von Stauungen, Verstopfungen und Schleimbildungen in Leitungssystemen und Apparaturen, besonders in der Zellstoff-, Holzschliff-, Papier- und Pappenindustrie |
| US5221436A (en) * | 1988-06-29 | 1993-06-22 | Ecc International Limited | Pitch control using clay coated with an inorganic gel |
| GB8815515D0 (en) * | 1988-06-29 | 1988-08-03 | Ecc Int Ltd | Pitch control |
-
0
- NL NL58741D patent/NL58741C/xx active
-
1941
- 1941-07-28 CH CH226936D patent/CH226936A/de unknown
- 1941-08-19 FR FR874759D patent/FR874759A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR874759A (fr) | 1942-08-26 |
| CH226936A (de) | 1943-05-15 |