DE3009149C2 - - Google Patents

Info

Publication number
DE3009149C2
DE3009149C2 DE19803009149 DE3009149A DE3009149C2 DE 3009149 C2 DE3009149 C2 DE 3009149C2 DE 19803009149 DE19803009149 DE 19803009149 DE 3009149 A DE3009149 A DE 3009149A DE 3009149 C2 DE3009149 C2 DE 3009149C2
Authority
DE
Germany
Prior art keywords
cellulose
cmc
solution
mercerized
carboxymethylethyl
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.)
Revoked
Application number
DE19803009149
Other languages
German (de)
English (en)
Other versions
DE3009149A1 (de
Inventor
Motoyasu Saito
Hideaki Yatsushiro Kumamoto Jp Mukohyama
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.)
Kohjin Holdings Co Ltd
Original Assignee
Kohjin Holdings Co Ltd
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 Kohjin Holdings Co Ltd filed Critical Kohjin Holdings Co Ltd
Priority to DE19803009149 priority Critical patent/DE3009149A1/de
Publication of DE3009149A1 publication Critical patent/DE3009149A1/de
Application granted granted Critical
Publication of DE3009149C2 publication Critical patent/DE3009149C2/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
    • 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)
DE19803009149 1980-03-10 1980-03-10 Verfahren zum veraethern von cellulosen Granted DE3009149A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19803009149 DE3009149A1 (de) 1980-03-10 1980-03-10 Verfahren zum veraethern von cellulosen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803009149 DE3009149A1 (de) 1980-03-10 1980-03-10 Verfahren zum veraethern von cellulosen

Publications (2)

Publication Number Publication Date
DE3009149A1 DE3009149A1 (de) 1981-09-24
DE3009149C2 true DE3009149C2 (it) 1991-07-18

Family

ID=6096764

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19803009149 Granted DE3009149A1 (de) 1980-03-10 1980-03-10 Verfahren zum veraethern von cellulosen

Country Status (1)

Country Link
DE (1) DE3009149A1 (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2071488C (en) * 1990-08-24 1996-05-07 Kazuto Kobayashi Base for film-coating pharmaceuticals and method for preparing same
US5476668A (en) * 1990-08-24 1995-12-19 Shin-Etsu Chemical Co., Ltd. Base for film-coating pharmaceuticals and method for preparing same
DE19854770A1 (de) * 1998-11-27 2000-05-31 Wolff Walsrode Ag Verfahren zur Herstellung niedrigviskoser wasserlöslicher Celluloseether

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2523377A (en) * 1946-12-24 1950-09-26 Hercules Powder Co Ltd Preparation of cellulose ethers
US3338662A (en) * 1965-10-15 1967-08-29 Ricardo H Wade Production of fibrous cellulose ethers using iodide salts as catalysts
US3728331A (en) * 1969-04-04 1973-04-17 Dow Chemical Co Process for reducing the viscosity of a cellulose ether with hydrogen peroxide
US3896108A (en) * 1974-05-10 1975-07-22 Hercules Inc Carboxyalkyl modified ethyl cellulose

Also Published As

Publication number Publication date
DE3009149A1 (de) 1981-09-24

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Legal Events

Date Code Title Description
8128 New person/name/address of the agent

Representative=s name: TUERK, D., DIPL.-CHEM. DR.RER.NAT. GILLE, C., DIPL

8110 Request for examination paragraph 44
D2 Grant after examination
8363 Opposition against the patent
8331 Complete revocation