JPS57149308A - Molecular weight control of styrenesulfonate polymer - Google Patents
Molecular weight control of styrenesulfonate polymerInfo
- Publication number
- JPS57149308A JPS57149308A JP3383681A JP3383681A JPS57149308A JP S57149308 A JPS57149308 A JP S57149308A JP 3383681 A JP3383681 A JP 3383681A JP 3383681 A JP3383681 A JP 3383681A JP S57149308 A JPS57149308 A JP S57149308A
- Authority
- JP
- Japan
- Prior art keywords
- polymerization initiator
- styrenesulfonate
- polymer
- polymerization
- molecular weight
- 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
- Polymerisation Methods In General (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
PURPOSE: To carry out the production stably and easily, by adding a monomer and a polymerization initiator at controlled rates to the polymerization system, in producing a styrenesulfonate polymer having a desired MW by varying the amount of a polymerization initiator.
CONSTITUTION: A styrenesulfonate or its mixture with other ethylenically unsaturated monomers (e.g., acrylic acid and acrylamide) is dissolved in water, and this solution is added gradually at a constant rate to the reaction system. At the same time, a polymerization initiator (e.g., sodium persulfate or hydrogen peroxide) in an amount controlled according to the desired MW is added gradually at a constant rate to the polymerization system. The resulting reaction mixture is then reacted. This makes it possible to control the MW of the formed polymer stably. When the polymerization initiator/monomer ratio increase, the MW of the formed polymer decreases.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3383681A JPS57149308A (en) | 1981-03-11 | 1981-03-11 | Molecular weight control of styrenesulfonate polymer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3383681A JPS57149308A (en) | 1981-03-11 | 1981-03-11 | Molecular weight control of styrenesulfonate polymer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57149308A true JPS57149308A (en) | 1982-09-14 |
JPH0325441B2 JPH0325441B2 (en) | 1991-04-08 |
Family
ID=12397566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3383681A Granted JPS57149308A (en) | 1981-03-11 | 1981-03-11 | Molecular weight control of styrenesulfonate polymer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57149308A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6187715A (en) * | 1984-10-06 | 1986-05-06 | Toyo Soda Mfg Co Ltd | Aqueous colored polymer |
-
1981
- 1981-03-11 JP JP3383681A patent/JPS57149308A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6187715A (en) * | 1984-10-06 | 1986-05-06 | Toyo Soda Mfg Co Ltd | Aqueous colored polymer |
JPH0570645B2 (en) * | 1984-10-06 | 1993-10-05 | Tosoh Corp |
Also Published As
Publication number | Publication date |
---|---|
JPH0325441B2 (en) | 1991-04-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3405106A (en) | Polymerization of water soluble vinyl monomers in presence of metal salts | |
KR890006731A (en) | How to make absorbent polymer | |
JPS578208A (en) | High-alpha-methylstyrene content copolyymer, its production and composition containing the same | |
US3509114A (en) | Process for polymerization of water-soluble acrylic monomers | |
KR890011909A (en) | Process for the preparation of a water-swellable polymer, using sodium thiosulfate as a component of the redox initiator system | |
US4331792A (en) | Continuous process for production of copolymer of an alkali metal vinyl sulfonate and acrylic acid | |
JPS57149308A (en) | Molecular weight control of styrenesulfonate polymer | |
GB1521770A (en) | Two-step continuous polymerisation method to form acrylonitrile copolymers | |
DE3366056D1 (en) | Polymers of unsaturated acids | |
ES8303454A1 (en) | A method for the suspension polymerization of styrenic monomers. | |
JPS578210A (en) | Production of water-absorbing resin | |
JPS57137308A (en) | Production of copolymer | |
AU692980B2 (en) | Method of producing emulsion polymers | |
JPS5742703A (en) | Production of monodispersible super-molecular weight polymer | |
JPS56112918A (en) | Production of aromatic vinyl copolymer | |
JPS5454188A (en) | Continuous preparation of methyl methacrylate syrup | |
JPS56161414A (en) | Production of self-crosslinking water-absorbing resin | |
JPS57121009A (en) | Preparation of water-soluble high-molecular weight polymer | |
ES8604286A1 (en) | Polymer/polyol dispersions | |
JPS57182308A (en) | Production of copolymer | |
JPS56115694A (en) | Water treating chemical | |
ES8206559A1 (en) | Use of diperesters in the polymerisation of vinyl chloride monomer. | |
JPS5659808A (en) | Polymerization of vinyl chloride type monomer | |
JPS5455090A (en) | Continuous preparation of methyl methacrylate resin sheet | |
JPS56136801A (en) | Preparation of aqueous emulsion of polymer |