JPS54106420A - Method for concentrating aqueous solution of acrylamide - Google Patents

Method for concentrating aqueous solution of acrylamide

Info

Publication number
JPS54106420A
JPS54106420A JP1154978A JP1154978A JPS54106420A JP S54106420 A JPS54106420 A JP S54106420A JP 1154978 A JP1154978 A JP 1154978A JP 1154978 A JP1154978 A JP 1154978A JP S54106420 A JPS54106420 A JP S54106420A
Authority
JP
Japan
Prior art keywords
acrylamide
aqueous solution
concentrator
polymerization
concentrating aqueous
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.)
Pending
Application number
JP1154978A
Other languages
Japanese (ja)
Inventor
Yasumasa Yamaguchi
Kazuo Kono
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.)
Nitto Chemical Industry Co Ltd
Original Assignee
Nitto Chemical Industry 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 Nitto Chemical Industry Co Ltd filed Critical Nitto Chemical Industry Co Ltd
Priority to JP1154978A priority Critical patent/JPS54106420A/en
Publication of JPS54106420A publication Critical patent/JPS54106420A/en
Pending legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To prepare a concentrated aqueous solution or crystal of acrylamide, useful as a raw material of paper reinforcing agents, soil conditioners, etc., by concentrating an aqueous solution of acrylamide in the presence of NO, thereby preventing the polymerization of the acrylamide in the concentrator, solution or slurry.
CONSTITUTION: An aqueous solution of acrylamide obtained by the catalytic hydration of acrylonitrile, etc., is concentrated under a pressure of 20W1500mmHg, pref. 50W140mmHg, adding≥4M of NO per 1M of O2 fed in the concentrator. NO is effective to prevent the polymerization of acrylamide, even when the aqueous solution contains unreacted acrylonitrile.
COPYRIGHT: (C)1979,JPO&Japio
JP1154978A 1978-02-06 1978-02-06 Method for concentrating aqueous solution of acrylamide Pending JPS54106420A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1154978A JPS54106420A (en) 1978-02-06 1978-02-06 Method for concentrating aqueous solution of acrylamide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1154978A JPS54106420A (en) 1978-02-06 1978-02-06 Method for concentrating aqueous solution of acrylamide

Publications (1)

Publication Number Publication Date
JPS54106420A true JPS54106420A (en) 1979-08-21

Family

ID=11781027

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1154978A Pending JPS54106420A (en) 1978-02-06 1978-02-06 Method for concentrating aqueous solution of acrylamide

Country Status (1)

Country Link
JP (1) JPS54106420A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5782339A (en) * 1980-11-13 1982-05-22 Asahi Chem Ind Co Ltd Preparation of unsaturated carboxylic acid or its ester
US5922912A (en) * 1996-04-17 1999-07-13 Mitsui Chemicals, Inc. Concentration method of aqueous acrylamide solution

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5782339A (en) * 1980-11-13 1982-05-22 Asahi Chem Ind Co Ltd Preparation of unsaturated carboxylic acid or its ester
US5922912A (en) * 1996-04-17 1999-07-13 Mitsui Chemicals, Inc. Concentration method of aqueous acrylamide solution

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