JPS6438403A - Preparation of low-molecular water-soluble polymer - Google Patents

Preparation of low-molecular water-soluble polymer

Info

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
Application number
JP19555787A
Other languages
Japanese (ja)
Inventor
Akihiro Kondo
Tadashi Igarashi
Rikio Tsushima
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.)
Kao Corp
Original Assignee
Kao Corp
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 Kao Corp filed Critical Kao Corp
Priority to JP19555787A priority Critical patent/JPS6438403A/en
Publication of JPS6438403A publication Critical patent/JPS6438403A/en
Pending legal-status Critical Current

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  • 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.
JP19555787A 1987-08-05 1987-08-05 Preparation of low-molecular water-soluble polymer Pending JPS6438403A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (7)

* Cited by examiner, † Cited by third party
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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