JPS57137307A - Production of emulsified polymer of high polymerization degree containing carboxyl groups - Google Patents
Production of emulsified polymer of high polymerization degree containing carboxyl groupsInfo
- Publication number
- JPS57137307A JPS57137307A JP2222881A JP2222881A JPS57137307A JP S57137307 A JPS57137307 A JP S57137307A JP 2222881 A JP2222881 A JP 2222881A JP 2222881 A JP2222881 A JP 2222881A JP S57137307 A JPS57137307 A JP S57137307A
- Authority
- JP
- Japan
- Prior art keywords
- polymerization
- metal salt
- persulfate
- polymerization degree
- polymerization initiator
- 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
Abstract
PURPOSE: The emulsion polymerization of a monomer mixture containing a large amount of methacrylic acid is conducted by use of a polymerization initiator consisting of a persulfate salt and a metal salt of formaldehydesulfoxylate to produce the titled polymer of high polymerization degree stably without formation of coagulm.
CONSTITUTION: More than 80wt% of a monomer mixture that contains 50W 75wt% methacrylic acid and additionally acrylate and methacrylate esters in a 15W40% concentration is charged in the polymerizer. Then, an emulsifier, an anionic or nonionic emulsifier by 2W3wt% based on the total monomers, and a polymerization initiator consisting of a persulfate such as sodium persulfate and a formaldehydesulfoxylate metal salt such as an alkali metal salt by 0.01W 0.5wt% based on the total monomers are separately added to effect the polymerization at 20W60, preferably 35W50°C. Preferably, the polymerization initiator is added gain, after the completion of the reaction and aged, thus producing the objective emulsified polymer.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2222881A JPS57137307A (en) | 1981-02-19 | 1981-02-19 | Production of emulsified polymer of high polymerization degree containing carboxyl groups |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2222881A JPS57137307A (en) | 1981-02-19 | 1981-02-19 | Production of emulsified polymer of high polymerization degree containing carboxyl groups |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57137307A true JPS57137307A (en) | 1982-08-24 |
JPH0261491B2 JPH0261491B2 (en) | 1990-12-20 |
Family
ID=12076935
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2222881A Granted JPS57137307A (en) | 1981-02-19 | 1981-02-19 | Production of emulsified polymer of high polymerization degree containing carboxyl groups |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57137307A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5351287A (en) * | 1976-10-21 | 1978-05-10 | Sumitomo Chem Co Ltd | Polymerizatin of acrylic |
-
1981
- 1981-02-19 JP JP2222881A patent/JPS57137307A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5351287A (en) * | 1976-10-21 | 1978-05-10 | Sumitomo Chem Co Ltd | Polymerizatin of acrylic |
Also Published As
Publication number | Publication date |
---|---|
JPH0261491B2 (en) | 1990-12-20 |
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