Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
COOLING WATER SCALE PREVENTION AGENT AND COOLING WATER SCALE PREVENTION METHOD
Document Type and Number:
WIPO Patent Application WO/2020/122173
Kind Code:
A1
Abstract:
A cooling water scale prevention agent for a cooling water system that contains iron, manganese, and/or aluminum. The cooling water scale prevention agent includes a component (A) and a component (B). Component (A) is one or more compound selected from among: copolymers, and salts thereof, that include a structural unit that is derived from acrylic acid and a structural unit that is derived from 2-acrylamido-2-methylpropane sulfonic acid; and copolymers, and salts thereof, that include a structural unit that is derived from acrylic acid and a structural unit that is derived from 2-hydroxy-3-allyloxypropane sulfonic acid. Component (B) is one or more compound selected from among: ethylenediaminetetraacetic acid and salts thereof; tetrasodium 3-hydroxy-2,2-iminodisuccinic acid and salts thereof; [(phosphonomethyl)imino]bis(6,1-hexanediylnitrilobismethylene)tetrakisphosphonic acid and salts thereof; and 1-hydroxyethane-1,1-diphosphonic acid and salts thereof.

Inventors:
TANIYAMA NATSUMI (JP)
KURIBARA TAKESHI (JP)
TOKIFUJI TAKUYA (JP)
Application Number:
PCT/JP2019/048678
Publication Date:
June 18, 2020
Filing Date:
December 12, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
C02F5/00; C02F5/10; C02F5/12; C02F5/14; C08K5/17; C08K5/5317; C08L33/02; F28F19/00; F28G9/00
Foreign References:
JP2013213234A2013-10-17
JP2008006369A2008-01-17
JP2003053389A2003-02-25
JPS61125497A1986-06-13
JP2002105891A2002-04-10
JP2014059076A2014-04-03
JP2014036912A2014-02-27
JPH04356580A1992-12-10
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: WRITING FEEL-IMPROVING SHEET

Next Patent: RUBBER COMPOSITION AND TIRE IN WHICH SAME IS USED