JPS5590501A - Preparation of ethylcarboxymethylcellulose - Google Patents

Preparation of ethylcarboxymethylcellulose

Info

Publication number
JPS5590501A
JPS5590501A JP16432978A JP16432978A JPS5590501A JP S5590501 A JPS5590501 A JP S5590501A JP 16432978 A JP16432978 A JP 16432978A JP 16432978 A JP16432978 A JP 16432978A JP S5590501 A JPS5590501 A JP S5590501A
Authority
JP
Japan
Prior art keywords
reaction
carboxymethylcellulose
alkali
ethylcarboxymethylcellulose
reacted
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
JP16432978A
Other languages
Japanese (ja)
Other versions
JPS6261043B2 (en
Inventor
Mikiaki Tanaka
Akinori Shintani
Hideo Ishizaka
Masaaki Nakahata
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.)
Fujifilm Wako Pure Chemical Corp
Original Assignee
Wako Pure Chemical Industries 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 Wako Pure Chemical Industries Ltd filed Critical Wako Pure Chemical Industries Ltd
Priority to JP16432978A priority Critical patent/JPS5590501A/en
Publication of JPS5590501A publication Critical patent/JPS5590501A/en
Publication of JPS6261043B2 publication Critical patent/JPS6261043B2/ja
Granted legal-status Critical Current

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  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

PURPOSE: To obtain ethylcarboxymethylcellulose with high substitution degree at high yield by a method wherein carboxymethylcellulose and diethyl sulfate are reacted in the presence of alkali while formed alcohol in removed out of a reaction system.
CONSTITUTION: Carboxymethylcellulose or salt thereof are reacted in the presence of alkali at 70W140°C while alcohol formed by side-reaction is removed out of a reaction system. As alkali, sodium hydroxide, potassium hydroxide or the like are used and a solvent is generally used in the reaction. As a solvent, toluene, xylene, benzene or the like are mentioned and the reaction can be carried out at an atmospheric pressure. The amount of diethyl sulphate is as small as 2W4 times the theoretical amount based on carboxymethylcellulose.
COPYRIGHT: (C)1980,JPO&Japio
JP16432978A 1978-12-28 1978-12-28 Preparation of ethylcarboxymethylcellulose Granted JPS5590501A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16432978A JPS5590501A (en) 1978-12-28 1978-12-28 Preparation of ethylcarboxymethylcellulose

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16432978A JPS5590501A (en) 1978-12-28 1978-12-28 Preparation of ethylcarboxymethylcellulose

Publications (2)

Publication Number Publication Date
JPS5590501A true JPS5590501A (en) 1980-07-09
JPS6261043B2 JPS6261043B2 (en) 1987-12-19

Family

ID=15791090

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16432978A Granted JPS5590501A (en) 1978-12-28 1978-12-28 Preparation of ethylcarboxymethylcellulose

Country Status (1)

Country Link
JP (1) JPS5590501A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0517501A (en) * 1991-07-12 1993-01-26 Sanyo Chem Ind Ltd Etherification of cellulose derivative
JP2010031165A (en) * 2008-07-30 2010-02-12 Sanyo Chem Ind Ltd Alkyl-etherified carboxyalkylcellulose

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0517501A (en) * 1991-07-12 1993-01-26 Sanyo Chem Ind Ltd Etherification of cellulose derivative
JPH0713081B2 (en) * 1991-07-12 1995-02-15 三洋化成工業株式会社 Method for etherification of cellulose derivative
JP2010031165A (en) * 2008-07-30 2010-02-12 Sanyo Chem Ind Ltd Alkyl-etherified carboxyalkylcellulose

Also Published As

Publication number Publication date
JPS6261043B2 (en) 1987-12-19

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