JPS57179204A - Production of partially hydrolyzed acrylamide polymer - Google Patents
Production of partially hydrolyzed acrylamide polymerInfo
- Publication number
- JPS57179204A JPS57179204A JP6505681A JP6505681A JPS57179204A JP S57179204 A JPS57179204 A JP S57179204A JP 6505681 A JP6505681 A JP 6505681A JP 6505681 A JP6505681 A JP 6505681A JP S57179204 A JPS57179204 A JP S57179204A
- Authority
- JP
- Japan
- Prior art keywords
- polymer
- partially hydrolyzed
- water content
- granulated
- polymerized
- 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
Links
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
PURPOSE: Aqueous acrylamide is polymerized in the presence of a catalyst, granulated, brought into contact with caustic alkali, partially hydrolyzed under specific conditions keeping water content at a certain level, then dried to produce the titled polymer free from water-insoluble components, thus being used as a flocculant.
CONSTITUTION: The polymerization of aqueous acrylamide of 15W45wt% concentration is polymerized by adding 2,2-azobis(2-aminopropane)hydrochloride and sodium bisulfite as catalysts to prepare a gel polymer of 85W55wt% water content. The resultant polymer is made into granules by means of a meat-milling type extrusion granulator and the granulated polymer is partially hydrolyzed by bringing them into contact with aqueous caustic alkali, e.g., spraying at 50W150°C under conditions where the water content of the granulated polymer is not lowered substantially, until the hydrolysis rate reaches more than 60%. Then, the resultant granules are dried.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6505681A JPS57179204A (en) | 1981-04-28 | 1981-04-28 | Production of partially hydrolyzed acrylamide polymer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6505681A JPS57179204A (en) | 1981-04-28 | 1981-04-28 | Production of partially hydrolyzed acrylamide polymer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57179204A true JPS57179204A (en) | 1982-11-04 |
JPS6129964B2 JPS6129964B2 (en) | 1986-07-10 |
Family
ID=13275906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6505681A Granted JPS57179204A (en) | 1981-04-28 | 1981-04-28 | Production of partially hydrolyzed acrylamide polymer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57179204A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59184203A (en) * | 1983-04-04 | 1984-10-19 | Nitto Chem Ind Co Ltd | Production of partially hydrolyzed acrylamide polymer |
JP2012219172A (en) * | 2011-04-07 | 2012-11-12 | Mitsui Chemicals Inc | New polymer obtained from water absorbent polymer and use thereof |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3784597A (en) * | 1970-12-19 | 1974-01-08 | Sanyo Chemical Ind Ltd | Process for producing a partially hydrolyzed acrylamide polymer |
JPS4917668A (en) * | 1972-06-05 | 1974-02-16 | ||
JPS5035281A (en) * | 1973-07-30 | 1975-04-03 | ||
JPS50104292A (en) * | 1974-01-24 | 1975-08-18 | ||
JPS5137672A (en) * | 1974-09-27 | 1976-03-30 | Jido Keisoku Gijutsu Kenkyukum | Shijidenkikeiki no jidokoseisochi |
JPS535295A (en) * | 1976-07-05 | 1978-01-18 | Mitsubishi Chem Ind Ltd | Preparation of partially hydrolyzed acrylamide polymer |
-
1981
- 1981-04-28 JP JP6505681A patent/JPS57179204A/en active Granted
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3784597A (en) * | 1970-12-19 | 1974-01-08 | Sanyo Chemical Ind Ltd | Process for producing a partially hydrolyzed acrylamide polymer |
JPS4917668A (en) * | 1972-06-05 | 1974-02-16 | ||
JPS5035281A (en) * | 1973-07-30 | 1975-04-03 | ||
JPS50104292A (en) * | 1974-01-24 | 1975-08-18 | ||
JPS5137672A (en) * | 1974-09-27 | 1976-03-30 | Jido Keisoku Gijutsu Kenkyukum | Shijidenkikeiki no jidokoseisochi |
JPS535295A (en) * | 1976-07-05 | 1978-01-18 | Mitsubishi Chem Ind Ltd | Preparation of partially hydrolyzed acrylamide polymer |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59184203A (en) * | 1983-04-04 | 1984-10-19 | Nitto Chem Ind Co Ltd | Production of partially hydrolyzed acrylamide polymer |
JPS6315283B2 (en) * | 1983-04-04 | 1988-04-04 | Nitsuto Kagaku Kogyo Kk | |
JP2012219172A (en) * | 2011-04-07 | 2012-11-12 | Mitsui Chemicals Inc | New polymer obtained from water absorbent polymer and use thereof |
Also Published As
Publication number | Publication date |
---|---|
JPS6129964B2 (en) | 1986-07-10 |
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