NO20004037L - Process for the preparation of carboxymethyl cellulose - Google Patents

Process for the preparation of carboxymethyl cellulose

Info

Publication number
NO20004037L
NO20004037L NO20004037A NO20004037A NO20004037L NO 20004037 L NO20004037 L NO 20004037L NO 20004037 A NO20004037 A NO 20004037A NO 20004037 A NO20004037 A NO 20004037A NO 20004037 L NO20004037 L NO 20004037L
Authority
NO
Norway
Prior art keywords
cellulose
preparation
carboxymethyl cellulose
methyl cellulose
carboxy methyl
Prior art date
Application number
NO20004037A
Other languages
Norwegian (no)
Other versions
NO20004037D0 (en
Inventor
Heiko Thielking
Wolfgang Koch
Klaus Nachtkamp
Bernd Ondruschka
Matthias Nuechter
Ute Heinze
Dieter Klemm
Original Assignee
Dow Wolff Cellulosics Gmbh
Univ Schiller Jena
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 Wolff Cellulosics Gmbh, Univ Schiller Jena filed Critical Dow Wolff Cellulosics Gmbh
Publication of NO20004037D0 publication Critical patent/NO20004037D0/en
Publication of NO20004037L publication Critical patent/NO20004037L/en

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
    • C08B11/02—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]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
    • B01J19/122—Incoherent waves
    • B01J19/126—Microwaves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00002—Chemical plants
    • B01J2219/00027—Process aspects
    • B01J2219/00029—Batch processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00002—Chemical plants
    • B01J2219/00027—Process aspects
    • B01J2219/00033—Continuous processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0873—Materials to be treated
    • B01J2219/0881—Two or more materials
    • B01J2219/089—Liquid-solid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/12—Processes employing electromagnetic waves
    • B01J2219/1203—Incoherent waves
    • B01J2219/1206—Microwaves
    • B01J2219/1275—Controlling the microwave irradiation variables
    • B01J2219/1278—Time
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/12—Processes employing electromagnetic waves
    • B01J2219/1203—Incoherent waves
    • B01J2219/1206—Microwaves
    • B01J2219/1275—Controlling the microwave irradiation variables
    • B01J2219/1281—Frequency
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/12—Processes employing electromagnetic waves
    • B01J2219/1203—Incoherent waves
    • B01J2219/1206—Microwaves
    • B01J2219/1287—Features relating to the microwave source
    • B01J2219/129—Arrangements thereof
    • B01J2219/1293—Single source

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
  • Materials Engineering (AREA)
  • Biochemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

PURPOSE: Provided is a method for producing carboxy methyl cellulose, capable of preparing the carboxy methyl cellulose in a short time and generating a small amount of by-products at a low process cost. CONSTITUTION: The method comprises (a) activating the cellulose and (b) reacting the activated cellulose with one or more kinds of carboxy methylation agent. The reaction process (b) is carried out in an electromagnetic field having 10 MHz to 23 GHz frequency.
NO20004037A 1999-08-13 2000-08-11 Process for the preparation of carboxymethyl cellulose NO20004037L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19938501A DE19938501A1 (en) 1999-08-13 1999-08-13 Carboxymethylcellulose production, useful in chromatography or as intermediate in biotechnology, pharmacy, paper and food industries comprises electromagnetic irradiation of cellulose

Publications (2)

Publication Number Publication Date
NO20004037D0 NO20004037D0 (en) 2000-08-11
NO20004037L true NO20004037L (en) 2001-02-14

Family

ID=7918353

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20004037A NO20004037L (en) 1999-08-13 2000-08-11 Process for the preparation of carboxymethyl cellulose

Country Status (9)

Country Link
EP (1) EP1083182B1 (en)
JP (1) JP2001048901A (en)
KR (1) KR100650097B1 (en)
AT (1) ATE238350T1 (en)
BR (1) BR0003502B1 (en)
CA (1) CA2315505A1 (en)
DE (2) DE19938501A1 (en)
MX (1) MXPA00007822A (en)
NO (1) NO20004037L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101899518B1 (en) * 2016-11-18 2018-09-19 한국원자력연구원 Preparation method of carboxymethylcellulose using pre-irradiation
CN111135780B (en) * 2020-01-02 2021-09-07 中国科学院广州能源研究所 Method for depolymerizing lignin by microwave continuous reaction device
KR102697279B1 (en) 2021-11-29 2024-08-22 주식회사 지엘켐 Method of manufacturing the high-substituted carboxymethyl cellulose

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900463A (en) * 1968-12-14 1975-08-19 Dai Ichi Kogyo Seiyaku Co Ltd Process for preparing alkali carboxymethyl cellulose
DE2823710A1 (en) * 1978-05-31 1979-12-06 Hoechst Ag Crosslinked, swellable, carboxyalkyl-cellulose mfr. - from fibres of natural cellulose or cellulose hydrate
JPS62185701A (en) * 1986-02-10 1987-08-14 Daicel Chem Ind Ltd Production of alkali metal salt of carboxymethyl cellulose
JPH09176201A (en) * 1995-12-26 1997-07-08 Daicel Chem Ind Ltd Manufacture of carboxymethyl cellulose
DE19624990A1 (en) * 1996-06-22 1998-01-08 Gluesenkamp Karl Heinz Dr Production of polymer compounds with activated amino groups
EP0910602A1 (en) * 1996-07-10 1999-04-28 Sound Pipe Ltd Acetylation of lignocellulosic materials and applications thereof
DE19842637A1 (en) * 1997-10-06 1999-04-08 Henkel Kgaa Preparation of retarded water-soluble polysaccharide derivative for use e.g. as protective colloid

Also Published As

Publication number Publication date
KR100650097B1 (en) 2006-11-27
ATE238350T1 (en) 2003-05-15
NO20004037D0 (en) 2000-08-11
JP2001048901A (en) 2001-02-20
EP1083182B1 (en) 2003-04-23
BR0003502A (en) 2001-08-07
CA2315505A1 (en) 2001-02-13
DE19938501A1 (en) 2001-02-15
MXPA00007822A (en) 2004-12-09
BR0003502B1 (en) 2009-05-05
DE50001841D1 (en) 2003-05-28
EP1083182A1 (en) 2001-03-14
KR20010050064A (en) 2001-06-15

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application