JPS57201595A - Scale preventing agent for circulating cooling water system - Google Patents
Scale preventing agent for circulating cooling water systemInfo
- Publication number
- JPS57201595A JPS57201595A JP8611881A JP8611881A JPS57201595A JP S57201595 A JPS57201595 A JP S57201595A JP 8611881 A JP8611881 A JP 8611881A JP 8611881 A JP8611881 A JP 8611881A JP S57201595 A JPS57201595 A JP S57201595A
- Authority
- JP
- Japan
- Prior art keywords
- scale preventing
- long
- preventing agent
- chain alkane
- cooling water
- 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
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
PURPOSE: To obtain a scale preventing agent for circulating cooling water system which has both the scale preventing effect and the anticorrosion effect, by polymerizing the acrylic compounds under the presence of the long-chain alkane thiol and using when necessary the oligomer which is obtained through the hydrolysis.
CONSTITUTION: The monomer[such as (meth)acrylic acid or its Na salt] shown in FormulaI[wherein, R1 represents a hydrogen atom or a methyl group, and X respresents -COOH, COO-M+(M+ donotes a monovalent cation), -CONH2, -C=M or -COOR2(R2 denotes a 1W4C alkyl group optionally containing a hydroxyl group)]is polymerized with use of a radical polymerization starting agent and under the presence of the long-chain alkane thiol (such as octane thiol) shown in formula II (wherein, R3 represents a 8W20C alkyl group). In this case, 1W30wt% (5W20wt% preferable) long-chain alkane chiol is used to the monomer. A polymer thus obtained is directly used as a scale preventing agent. In case the (meth)acrylic acid (chloride) in the polymer is ≤50mol%, thehydrolysis is carried out with use of a monovalent strong basic compound like NaOH, etc. so that the COO content is set ≥50mol%.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8611881A JPS57201595A (en) | 1981-06-04 | 1981-06-04 | Scale preventing agent for circulating cooling water system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8611881A JPS57201595A (en) | 1981-06-04 | 1981-06-04 | Scale preventing agent for circulating cooling water system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57201595A true JPS57201595A (en) | 1982-12-10 |
JPS644838B2 JPS644838B2 (en) | 1989-01-26 |
Family
ID=13877774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8611881A Granted JPS57201595A (en) | 1981-06-04 | 1981-06-04 | Scale preventing agent for circulating cooling water system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57201595A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001147096A (en) * | 1999-09-09 | 2001-05-29 | Tadahiro Omi | Apparatus and method for highly efficiently controlling temperature and humidity of gas |
JP2005238230A (en) * | 2004-02-25 | 2005-09-08 | Posco | Method for improving performance of organic coating for corrosion resistance |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3371040A (en) * | 1964-05-19 | 1968-02-27 | Rohm & Haas | Lubricant and fuel compositions |
US3953393A (en) * | 1974-01-07 | 1976-04-27 | Basf Wyandotte Corporation | Low temperature process for the preparation of graft copolymer dispersions |
US4029577A (en) * | 1975-11-17 | 1977-06-14 | Betz Laboratories, Inc. | Polymers for use in water treatment |
-
1981
- 1981-06-04 JP JP8611881A patent/JPS57201595A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3371040A (en) * | 1964-05-19 | 1968-02-27 | Rohm & Haas | Lubricant and fuel compositions |
US3953393A (en) * | 1974-01-07 | 1976-04-27 | Basf Wyandotte Corporation | Low temperature process for the preparation of graft copolymer dispersions |
US4029577A (en) * | 1975-11-17 | 1977-06-14 | Betz Laboratories, Inc. | Polymers for use in water treatment |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001147096A (en) * | 1999-09-09 | 2001-05-29 | Tadahiro Omi | Apparatus and method for highly efficiently controlling temperature and humidity of gas |
JP4521847B2 (en) * | 1999-09-09 | 2010-08-11 | 忠弘 大見 | Gas temperature / humidity adjustment device and adjustment method |
JP2005238230A (en) * | 2004-02-25 | 2005-09-08 | Posco | Method for improving performance of organic coating for corrosion resistance |
Also Published As
Publication number | Publication date |
---|---|
JPS644838B2 (en) | 1989-01-26 |
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