GB200815A - Improvements in and relating to the manufacture of cellulose ethers - Google Patents

Improvements in and relating to the manufacture of cellulose ethers

Info

Publication number
GB200815A
GB200815A GB17764/23A GB1776423A GB200815A GB 200815 A GB200815 A GB 200815A GB 17764/23 A GB17764/23 A GB 17764/23A GB 1776423 A GB1776423 A GB 1776423A GB 200815 A GB200815 A GB 200815A
Authority
GB
United Kingdom
Prior art keywords
amount
cellulose
manufacture
cellulose ethers
etherification
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
GB17764/23A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB200815A publication Critical patent/GB200815A/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

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

In the manufacture of cellulose ethers the amount of caustic alkali exceeds the amount of cellulosic material taken, and the quantity of water ties between <FORM:0200815/2/1> and <FORM:0200815/2/2> , in these expressions a being the amount of caustic alkali employed to each part of cellulose taken. The initial material may be cellulose, or a conversion product or derivative in which the cellulose has not been degraded too far, or an ether of a lower stage of etherification. The etherification may be carried out in one or several stages, and in the presence of diluents such as benzol, and with the aid of catalysts such as copper, copper salts, ferrous sulphate or other iron salt. If a water-resistant ether is desired, the quantity of alkali should be 1.5 to 2.5 times the amount of cellulosic material taken. Specifications 163,017 and 163,018 are referred to.
GB17764/23A 1922-07-13 1923-07-09 Improvements in and relating to the manufacture of cellulose ethers Expired GB200815A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT200815X 1922-07-13

Publications (1)

Publication Number Publication Date
GB200815A true GB200815A (en) 1924-10-02

Family

ID=3669084

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17764/23A Expired GB200815A (en) 1922-07-13 1923-07-09 Improvements in and relating to the manufacture of cellulose ethers

Country Status (1)

Country Link
GB (1) GB200815A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0274898A2 (en) * 1986-12-27 1988-07-20 Ethicon, Inc. Implant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0274898A2 (en) * 1986-12-27 1988-07-20 Ethicon, Inc. Implant
EP0274898A3 (en) * 1986-12-27 1989-10-11 Ethicon, Inc. Implant

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