FR2372177A2 - Procede de preparation d'hydroxypropylcellulose - Google Patents

Procede de preparation d'hydroxypropylcellulose

Info

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
Application number
FR7635660A
Other languages
English (en)
Other versions
FR2372177B2 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HERCULES FRANCE SA
Original Assignee
HERCULES FRANCE SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HERCULES FRANCE SA filed Critical HERCULES FRANCE SA
Priority to FR7635660A priority Critical patent/FR2372177A2/fr
Publication of FR2372177A2 publication Critical patent/FR2372177A2/fr
Application granted granted Critical
Publication of FR2372177B2 publication Critical patent/FR2372177B2/fr
Granted legal-status Critical Current

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.
FR7635660A 1976-11-26 1976-11-26 Procede de preparation d'hydroxypropylcellulose Granted FR2372177A2 (fr)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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