FR2372177A2 - Procede de preparation d'hydroxypropylcellulose - Google Patents
Procede de preparation d'hydroxypropylcelluloseInfo
- Publication number
- FR2372177A2 FR2372177A2 FR7635660A FR7635660A FR2372177A2 FR 2372177 A2 FR2372177 A2 FR 2372177A2 FR 7635660 A FR7635660 A FR 7635660A FR 7635660 A FR7635660 A FR 7635660A FR 2372177 A2 FR2372177 A2 FR 2372177A2
- Authority
- FR
- France
- Prior art keywords
- ionic
- cellulose
- substits
- prepn
- hydroxypropyl
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B11/00—Preparation of cellulose ethers
- C08B11/193—Mixed ethers, i.e. ethers with two or more different etherifying groups
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Dérivés mixtes de cellulose. Ces dérivés sont constitués d'hydroxypropyl-cellulose comportant des substituants ioniques et au moins un substituant non ionique. Pour les préparer, on ajoute à température ambiante à l'alcali-cellulose un premier réactif donnant un substituant ionique, on mélange pendant trente minutes au moins, après quoi on procède à l'addition d'oxyde de propylène, d'un second réactif donnant un substituant non ionique (rapport molaire du second réactif/cellulose compris entre 0,01 et 1, ce second réactif pouvant être le chlorure d'éthyle, le chlorure de butyle ou le chlorure de propyle), à l'homogénéisation du mélange et à l'éthérification par élévation de température. Applications : fabrication de dérivés mixtes de cellulose.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7635660A FR2372177A2 (fr) | 1976-11-26 | 1976-11-26 | Procede de preparation d'hydroxypropylcellulose |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7635660A FR2372177A2 (fr) | 1976-11-26 | 1976-11-26 | Procede de preparation d'hydroxypropylcellulose |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2372177A2 true FR2372177A2 (fr) | 1978-06-23 |
FR2372177B2 FR2372177B2 (fr) | 1979-03-30 |
Family
ID=9180349
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7635660A Granted FR2372177A2 (fr) | 1976-11-26 | 1976-11-26 | Procede de preparation d'hydroxypropylcellulose |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2372177A2 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4456751A (en) * | 1983-09-22 | 1984-06-26 | The Dow Chemical Company | Multiple stage process for preparing mixed hydroxyalkylcellulose ethers |
US4507474A (en) * | 1983-01-31 | 1985-03-26 | Henkel Kommanditgesellschaft | Process for highly substituted carboxyalkyl celluloses and mixed ethers thereof |
EP0200363A1 (fr) * | 1985-04-03 | 1986-11-05 | The Dow Chemical Company | C3-C4 hydroxyalcoyl-éthyl-éthers mixtes de la cellulose solubles dans des solvants organiques |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3351583A (en) * | 1964-07-06 | 1967-11-07 | Hercules Inc | Preparation of hydroxypropyl cellulose |
DE1643888A1 (de) * | 1967-09-15 | 1971-07-29 | Dow Chemical Co | Verfahren zur Herstellung von Celluloseaethern |
-
1976
- 1976-11-26 FR FR7635660A patent/FR2372177A2/fr active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3351583A (en) * | 1964-07-06 | 1967-11-07 | Hercules Inc | Preparation of hydroxypropyl cellulose |
DE1643888A1 (de) * | 1967-09-15 | 1971-07-29 | Dow Chemical Co | Verfahren zur Herstellung von Celluloseaethern |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4507474A (en) * | 1983-01-31 | 1985-03-26 | Henkel Kommanditgesellschaft | Process for highly substituted carboxyalkyl celluloses and mixed ethers thereof |
US4456751A (en) * | 1983-09-22 | 1984-06-26 | The Dow Chemical Company | Multiple stage process for preparing mixed hydroxyalkylcellulose ethers |
EP0200363A1 (fr) * | 1985-04-03 | 1986-11-05 | The Dow Chemical Company | C3-C4 hydroxyalcoyl-éthyl-éthers mixtes de la cellulose solubles dans des solvants organiques |
Also Published As
Publication number | Publication date |
---|---|
FR2372177B2 (fr) | 1979-03-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property |