JPS55108401A - Production of low-viscosity carboxymethylethylcellulose - Google Patents

Production of low-viscosity carboxymethylethylcellulose

Info

Publication number
JPS55108401A
JPS55108401A JP1548779A JP1548779A JPS55108401A JP S55108401 A JPS55108401 A JP S55108401A JP 1548779 A JP1548779 A JP 1548779A JP 1548779 A JP1548779 A JP 1548779A JP S55108401 A JPS55108401 A JP S55108401A
Authority
JP
Japan
Prior art keywords
carboxymethylethylcellulose
viscosity
low
production
heat
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.)
Granted
Application number
JP1548779A
Other languages
Japanese (ja)
Other versions
JPS5941643B2 (en
Inventor
Hideaki Mukoyama
Motoyasu Saito
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 JP1548779A priority Critical patent/JPS5941643B2/en
Priority to US06/067,667 priority patent/US4250305A/en
Publication of JPS55108401A publication Critical patent/JPS55108401A/en
Publication of JPS5941643B2 publication Critical patent/JPS5941643B2/en
Expired legal-status Critical Current

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  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

PURPOSE: To produce a high-grade, low-viscosity carboxymethylethylcellulose having excellent whiteness and transparency, by dissolving a high-viscosity carboxymethylethylcellulose in an aqueous solution of a lower alkanol and heat-treating the solution together with H2O2.
CONSTITUTION: A high-viscosity carboxymethylethylcellulose (5W50wt%) is dissolved in a mixture of a 1W4C lower alkanol and water in a weight ratio of 95:5W 70:30 and, then H2O2 is added thereto in an amount of 0.1W50wt%, pref. 1W 30wt%, based on the weight of dried carboxymethylethylcellulose. The resulting solution is subjected to heat-treatment at a temperature between 60°C and the boiling temperature of the system, whereby the depolymerization of the high-viscosity carboxymethylethylcellulose is effected. The low-viscosity carboxymethylethylcellulose thus obtained, which is insoluble in water, is precipitated by removing the alkanol.
COPYRIGHT: (C)1980,JPO&Japio
JP1548779A 1978-09-01 1979-02-15 Method for producing low viscosity carboxymethylethyl cellulose Expired JPS5941643B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1548779A JPS5941643B2 (en) 1979-02-15 1979-02-15 Method for producing low viscosity carboxymethylethyl cellulose
US06/067,667 US4250305A (en) 1978-09-01 1979-08-20 Process for preparing cellulose ether

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1548779A JPS5941643B2 (en) 1979-02-15 1979-02-15 Method for producing low viscosity carboxymethylethyl cellulose

Publications (2)

Publication Number Publication Date
JPS55108401A true JPS55108401A (en) 1980-08-20
JPS5941643B2 JPS5941643B2 (en) 1984-10-08

Family

ID=11890144

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1548779A Expired JPS5941643B2 (en) 1978-09-01 1979-02-15 Method for producing low viscosity carboxymethylethyl cellulose

Country Status (1)

Country Link
JP (1) JPS5941643B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002531593A (en) * 1998-11-27 2002-09-24 ヴオルフ・ヴアルスロデ・アクチエンゲゼルシヤフト Method for producing low viscosity water-soluble cellulose ether
JP2010235681A (en) * 2009-03-30 2010-10-21 Nippon Paper Industries Co Ltd Method for manufacturing cellulose nano-fiber

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60149847U (en) * 1984-03-16 1985-10-04 トヨタ自動車株式会社 cylinder block

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002531593A (en) * 1998-11-27 2002-09-24 ヴオルフ・ヴアルスロデ・アクチエンゲゼルシヤフト Method for producing low viscosity water-soluble cellulose ether
JP2010235681A (en) * 2009-03-30 2010-10-21 Nippon Paper Industries Co Ltd Method for manufacturing cellulose nano-fiber

Also Published As

Publication number Publication date
JPS5941643B2 (en) 1984-10-08

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