FR2636358B1 - Procede pour ameliorer la stabilite a la lumiere des materiaux ligno-cellulosiques - Google Patents
Procede pour ameliorer la stabilite a la lumiere des materiaux ligno-cellulosiquesInfo
- Publication number
- FR2636358B1 FR2636358B1 FR8812018A FR8812018A FR2636358B1 FR 2636358 B1 FR2636358 B1 FR 2636358B1 FR 8812018 A FR8812018 A FR 8812018A FR 8812018 A FR8812018 A FR 8812018A FR 2636358 B1 FR2636358 B1 FR 2636358B1
- Authority
- FR
- France
- Prior art keywords
- improving
- light stability
- lignocellulosic materials
- lignocellulosic
- materials
- 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.)
- Expired - Fee Related
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
- D21H17/09—Sulfur-containing 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
- D21C9/1026—Other features in bleaching processes
- D21C9/1047—Conserving the bleached pulp
-
- 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
- D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/90—UV-protection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/34—Organic impregnating agents
- B27K3/38—Aromatic 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/143—Agents preventing ageing of paper, e.g. radiation absorbing substances
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8812018A FR2636358B1 (fr) | 1988-09-09 | 1988-09-09 | Procede pour ameliorer la stabilite a la lumiere des materiaux ligno-cellulosiques |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8812018A FR2636358B1 (fr) | 1988-09-09 | 1988-09-09 | Procede pour ameliorer la stabilite a la lumiere des materiaux ligno-cellulosiques |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2636358A1 FR2636358A1 (fr) | 1990-03-16 |
FR2636358B1 true FR2636358B1 (fr) | 1991-06-28 |
Family
ID=9370004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8812018A Expired - Fee Related FR2636358B1 (fr) | 1988-09-09 | 1988-09-09 | Procede pour ameliorer la stabilite a la lumiere des materiaux ligno-cellulosiques |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2636358B1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU723502B2 (en) | 1997-07-23 | 2000-08-31 | Ciba Specialty Chemicals Holding Inc. | Inhibition of pulp and paper yellowing using nitroxides and other coadditives |
US6447644B1 (en) | 1997-07-23 | 2002-09-10 | Ciba Specialty Chemicals Corporation | Inhibition of pulp and paper yellowing using nitroxides, hydroxylamines and other coadditives |
DE10112101A1 (de) * | 2001-03-14 | 2002-09-19 | Degussa | Verfahren zur Weißgradstabilisierung ligninhaltiger Faserstoffmaterialien, Stabilisatorzusammensetzung und damit stabilisierte Faserstoffmaterialien |
-
1988
- 1988-09-09 FR FR8812018A patent/FR2636358B1/fr not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2636358A1 (fr) | 1990-03-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |