JPS57137307A - Production of emulsified polymer of high polymerization degree containing carboxyl groups - Google Patents

Production of emulsified polymer of high polymerization degree containing carboxyl groups

Info

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
Application number
JP2222881A
Other languages
Japanese (ja)
Other versions
JPH0261491B2 (en
Inventor
Akira Yada
Takashi Aoyama
Shizuro Kimata
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.)
Toagosei Co Ltd
Original Assignee
Toagosei 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 Toagosei Co Ltd filed Critical Toagosei Co Ltd
Priority to JP2222881A priority Critical patent/JPS57137307A/en
Publication of JPS57137307A publication Critical patent/JPS57137307A/en
Publication of JPH0261491B2 publication Critical patent/JPH0261491B2/ja
Granted legal-status Critical Current

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
JP2222881A 1981-02-19 1981-02-19 Production of emulsified polymer of high polymerization degree containing carboxyl groups Granted JPS57137307A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5351287A (en) * 1976-10-21 1978-05-10 Sumitomo Chem Co Ltd Polymerizatin of acrylic

Patent Citations (1)

* Cited by examiner, † Cited by third party
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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