GB812510A - Process for preparing cellulose ethers and the product obtained thereby - Google Patents

Process for preparing cellulose ethers and the product obtained thereby

Info

Publication number
GB812510A
GB812510A GB11251/57A GB1125157A GB812510A GB 812510 A GB812510 A GB 812510A GB 11251/57 A GB11251/57 A GB 11251/57A GB 1125157 A GB1125157 A GB 1125157A GB 812510 A GB812510 A GB 812510A
Authority
GB
United Kingdom
Prior art keywords
cellulose
alkylene oxide
alkyl halide
alkyl
carbon atoms
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
Application number
GB11251/57A
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB812510A publication Critical patent/GB812510A/en
Expired 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

Cellulose alkyl hydroxyalkyl ethers are prepared by causing cellulose to absorb from 1.2-2.8 mols. of aqueous alkali metal hydroxide per anhydroglucose unit at 15-30 DEG C. and treating the resulting alkali cellulose at 20-140 DEG C. with an amount of alkyl halide (having 1 or 2 carbon atoms) approximately equivalent to the alkali metal hydroxide absorbed by the cellulose, and with an alkylene oxide (having 2-4 carbon atoms) until substantially all of the alkyl halide and from 0.1-0.5 part by weight of alkylene oxide per part of cellulose has reacted. Preferably the alkyl halide and alkylene oxide are brought into contact with the alkali cellulose simultaneously. Methyl and ethyl chlorides are the preferred alkyl halides. The products are water-soluble and their solutions show reduced viscosity hysteresis effects. Examples are given.
GB11251/57A 1956-04-30 1957-04-05 Process for preparing cellulose ethers and the product obtained thereby Expired GB812510A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US812510XA 1956-04-30 1956-04-30

Publications (1)

Publication Number Publication Date
GB812510A true GB812510A (en) 1959-04-29

Family

ID=22163025

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11251/57A Expired GB812510A (en) 1956-04-30 1957-04-05 Process for preparing cellulose ethers and the product obtained thereby

Country Status (1)

Country Link
GB (1) GB812510A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4609729A (en) * 1985-04-03 1986-09-02 The Dow Chemical Company Organosoluble C3 -C4 hydroxyalkyl ethyl cellulose ethers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4609729A (en) * 1985-04-03 1986-09-02 The Dow Chemical Company Organosoluble C3 -C4 hydroxyalkyl ethyl cellulose ethers

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