JPS57207601A - Aging method of cellulose acetate - Google Patents

Aging method of cellulose acetate

Info

Publication number
JPS57207601A
JPS57207601A JP9203181A JP9203181A JPS57207601A JP S57207601 A JPS57207601 A JP S57207601A JP 9203181 A JP9203181 A JP 9203181A JP 9203181 A JP9203181 A JP 9203181A JP S57207601 A JPS57207601 A JP S57207601A
Authority
JP
Japan
Prior art keywords
electric conductivity
cellulose acetate
age
add
neutralizing agent
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
JP9203181A
Other languages
Japanese (ja)
Other versions
JPS6129961B2 (en
Inventor
Hideaki Doiwaki
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.)
Daicel Corp
Original Assignee
Daicel Corp
Daicel 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 Daicel Corp, Daicel Chemical Industries Ltd filed Critical Daicel Corp
Priority to JP9203181A priority Critical patent/JPS57207601A/en
Publication of JPS57207601A publication Critical patent/JPS57207601A/en
Publication of JPS6129961B2 publication Critical patent/JPS6129961B2/ja
Granted legal-status Critical Current

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  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

PURPOSE: To add an optimal amount of a neutralizing agent rapidly and accurately, reduce the preparation cost, rationalize the washing step, etc. and age cellulose acetate, by using measured values of electric conductivity of an aging reaction solution as a sensing means.
CONSTITUTION: An aging reactor of the vertical cylindrical reactor type with a jacket and an agitator having a body of a good conductor made of stainless steel is used, and electrodes for measuring the electric conductivity are provided near the dischargeing outlet of the bottom thereof. The electric conductivity of the reaction system is measured at a solution thickness of 20cm, and the relation between the time and electric conductivity is used as a monitoring means to add an optimal amount of an aqueous solution of a neutralizing agent, e.g. sodium acetate, and age the cellulose acetate.
COPYRIGHT: (C)1982,JPO&Japio
JP9203181A 1981-06-15 1981-06-15 Aging method of cellulose acetate Granted JPS57207601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9203181A JPS57207601A (en) 1981-06-15 1981-06-15 Aging method of cellulose acetate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9203181A JPS57207601A (en) 1981-06-15 1981-06-15 Aging method of cellulose acetate

Publications (2)

Publication Number Publication Date
JPS57207601A true JPS57207601A (en) 1982-12-20
JPS6129961B2 JPS6129961B2 (en) 1986-07-10

Family

ID=14043158

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9203181A Granted JPS57207601A (en) 1981-06-15 1981-06-15 Aging method of cellulose acetate

Country Status (1)

Country Link
JP (1) JPS57207601A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006089574A (en) * 2004-09-22 2006-04-06 Daicel Chem Ind Ltd Cellulose ester and its preparation method
JP2013049867A (en) * 2012-11-28 2013-03-14 Daicel Corp Method for producing cellulose ester

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006089574A (en) * 2004-09-22 2006-04-06 Daicel Chem Ind Ltd Cellulose ester and its preparation method
JP2013049867A (en) * 2012-11-28 2013-03-14 Daicel Corp Method for producing cellulose ester

Also Published As

Publication number Publication date
JPS6129961B2 (en) 1986-07-10

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