DE3238278C2 - - Google Patents

Info

Publication number
DE3238278C2
DE3238278C2 DE19823238278 DE3238278A DE3238278C2 DE 3238278 C2 DE3238278 C2 DE 3238278C2 DE 19823238278 DE19823238278 DE 19823238278 DE 3238278 A DE3238278 A DE 3238278A DE 3238278 C2 DE3238278 C2 DE 3238278C2
Authority
DE
Germany
Prior art keywords
range
carboxymethyl
alkali
excess
polysaccharide
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 - Lifetime
Application number
DE19823238278
Other languages
German (de)
English (en)
Other versions
DE3238278A1 (de
Inventor
Wilfried Dr. 4000 Duesseldorf De Raehse
Norbert 5657 Haan De Kuehne
Willi Dr. 4030 Ratingen De Wuest
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Priority to DE19823238278 priority Critical patent/DE3238278A1/de
Priority to BE0/211690A priority patent/BE897979A/fr
Priority to FR8316411A priority patent/FR2534590B1/fr
Publication of DE3238278A1 publication Critical patent/DE3238278A1/de
Application granted granted Critical
Publication of DE3238278C2 publication Critical patent/DE3238278C2/de
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
    • 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
    • C08B11/02—Alkyl or cycloalkyl ethers
    • C08B11/04—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals
    • C08B11/10—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals
    • C08B11/12—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals substituted with carboxylic radicals, e.g. carboxymethylcellulose [CMC]
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B31/00—Preparation of derivatives of starch
    • C08B31/08—Ethers
    • C08B31/12—Ethers having alkyl or cycloalkyl radicals substituted by heteroatoms, e.g. hydroxyalkyl or carboxyalkyl starch

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)
DE19823238278 1982-10-15 1982-10-15 Verfahren zur herstellung von niedrigsubstituierten, gut wasserloeslichen carboxyalkyl-polysaccharid-(misch-)ethern sowie entsprechende polysaccharid-mischether Granted DE3238278A1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19823238278 DE3238278A1 (de) 1982-10-15 1982-10-15 Verfahren zur herstellung von niedrigsubstituierten, gut wasserloeslichen carboxyalkyl-polysaccharid-(misch-)ethern sowie entsprechende polysaccharid-mischether
BE0/211690A BE897979A (fr) 1982-10-15 1983-10-13 Procede de preparation de carboxyalcoyl-polysaccharide-ethers (mixtes) faiblement substitues et a bonne solubilite dans l'eau, ainsi que les polysaccharide-ethers mixtes correspondants
FR8316411A FR2534590B1 (fr) 1982-10-15 1983-10-14 Procede de preparation de carboxyalcoyl-polysaccharide-ethers (mixtes) faiblement substitues et a bonne solubilite dans l'eau, ainsi que les polysaccharide-ethers mixtes correspondants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823238278 DE3238278A1 (de) 1982-10-15 1982-10-15 Verfahren zur herstellung von niedrigsubstituierten, gut wasserloeslichen carboxyalkyl-polysaccharid-(misch-)ethern sowie entsprechende polysaccharid-mischether

Publications (2)

Publication Number Publication Date
DE3238278A1 DE3238278A1 (de) 1984-04-19
DE3238278C2 true DE3238278C2 (ja) 1991-07-11

Family

ID=6175817

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823238278 Granted DE3238278A1 (de) 1982-10-15 1982-10-15 Verfahren zur herstellung von niedrigsubstituierten, gut wasserloeslichen carboxyalkyl-polysaccharid-(misch-)ethern sowie entsprechende polysaccharid-mischether

Country Status (3)

Country Link
BE (1) BE897979A (ja)
DE (1) DE3238278A1 (ja)
FR (1) FR2534590B1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007015282B4 (de) * 2007-03-29 2017-10-05 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Viskositätsregulator, Verfahren zu dessen Herstellung und dessen Verwendung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1222031B (de) * 1962-10-26 1966-08-04 Hercules Powder Co Ltd Verfahren zur Herstellung von Cellulose- oder Staerkeaethern
US2618632A (en) * 1949-04-05 1952-11-18 Hercules Powder Co Ltd Mixed cellulose ether and preparation thereof
US3085087A (en) * 1956-09-13 1963-04-09 Hercules Powder Co Ltd Preparation of carboxyalkyl cellulose ethers
GB928792A (en) * 1959-10-23 1963-06-12 Hercules Powder Co Ltd Improvements in or relating to alkali cellulose and preparation of cellulose ethers therefrom which give smooth solutions
DE1543136C3 (de) * 1965-12-30 1980-04-17 Hoechst Ag, 6000 Frankfurt Verfahren zur kontinuierlichen Herstellung von Methylcellulose oder Methylhydroxyalkylcellulose
BE703740A (ja) * 1967-09-11 1968-03-11

Also Published As

Publication number Publication date
FR2534590B1 (fr) 1986-12-26
FR2534590A1 (fr) 1984-04-20
DE3238278A1 (de) 1984-04-19
BE897979A (fr) 1984-01-30

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8363 Opposition against the patent
8330 Complete disclaimer