JPS6438403A - Preparation of low-molecular water-soluble polymer - Google Patents
Preparation of low-molecular water-soluble polymerInfo
- Publication number
- JPS6438403A JPS6438403A JP19555787A JP19555787A JPS6438403A JP S6438403 A JPS6438403 A JP S6438403A JP 19555787 A JP19555787 A JP 19555787A JP 19555787 A JP19555787 A JP 19555787A JP S6438403 A JPS6438403 A JP S6438403A
- Authority
- JP
- Japan
- Prior art keywords
- water
- soluble
- preparation
- low
- hydrogensulfite
- 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
Links
Landscapes
- Polymerisation Methods In General (AREA)
- Polymerization Catalysts (AREA)
Abstract
PURPOSE:To obtain the title polymer which has a controllable MW and is prevented from causing coloration and malodor, by polymerizing at least one member of water-soluble vinyl monomers in the presence of a water-soluble azoic radical polymn. initiator and hydrogensulfite ions having a concn. in a specified range in an aq. solvent. CONSTITUTION:At least one member of water-soluble vinyl monomers, such as (meth)acrylic ester derivatives, alkali metal salts of styrenesulfonate or N- vinylpyrrolidone, are submitted to a radical polymn. in the presence of a water- soluble azoic radical polymn. initiator, such as 2,2'-azobis(2-amidinopropane) dihydrochloride, and with the addition of NaHSO3 so that 0.1-30mol.% (per monomer) hydrogensulfite ions is present, with a pH adjusted to 3-9 at 10-95 deg.C, pref. in a nitrogen atmosphere, whereby the title polymer having an MW of 1,000-100,000 is obtd. in a high reproducibility.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19555787A JPS6438403A (en) | 1987-08-05 | 1987-08-05 | Preparation of low-molecular water-soluble polymer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19555787A JPS6438403A (en) | 1987-08-05 | 1987-08-05 | Preparation of low-molecular water-soluble polymer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6438403A true JPS6438403A (en) | 1989-02-08 |
Family
ID=16343090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19555787A Pending JPS6438403A (en) | 1987-08-05 | 1987-08-05 | Preparation of low-molecular water-soluble polymer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6438403A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6310156B1 (en) | 1998-03-06 | 2001-10-30 | Nippon Shokubai Co., Ltd. | (Meth) acrylic acid polymer and manufacturing method thereof |
JP2002284806A (en) * | 2001-03-26 | 2002-10-03 | Toagosei Co Ltd | Production method for water-soluble polymer |
EP1300426A1 (en) | 2001-10-03 | 2003-04-09 | Nippon Shokubai Co., Ltd. | (Meth)acrylic acid type polymer and unsaturated polyalkylene glycol type copolymer, and methods for production thereof |
JP2011127107A (en) * | 2009-11-20 | 2011-06-30 | Kao Corp | Method for manufacturing carboxylic acid-based polymer |
-
1987
- 1987-08-05 JP JP19555787A patent/JPS6438403A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6310156B1 (en) | 1998-03-06 | 2001-10-30 | Nippon Shokubai Co., Ltd. | (Meth) acrylic acid polymer and manufacturing method thereof |
JP2002284806A (en) * | 2001-03-26 | 2002-10-03 | Toagosei Co Ltd | Production method for water-soluble polymer |
EP1300426A1 (en) | 2001-10-03 | 2003-04-09 | Nippon Shokubai Co., Ltd. | (Meth)acrylic acid type polymer and unsaturated polyalkylene glycol type copolymer, and methods for production thereof |
US6998453B2 (en) | 2001-10-03 | 2006-02-14 | Nippon Shokubai Co., Ltd. | (Meth)acrylic acid type polymer and unsaturated polyalkylene glycol type copolymer, and methods for production thereof |
US7132487B2 (en) | 2001-10-03 | 2006-11-07 | Nippon Shokubai Co., Ltd. | (Meth) acrylic acid type polymer and unsaturated polyalkylene glycol type copolymer, and methods for production thereof |
US7285611B2 (en) | 2001-10-03 | 2007-10-23 | Nippon Shokubai Co., Ltd. | (Meth)acrylic acid type polymer and unsaturated polyalkylene glycol type copolymer, and methods for production thereof |
JP2011127107A (en) * | 2009-11-20 | 2011-06-30 | Kao Corp | Method for manufacturing carboxylic acid-based polymer |
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