COMPOSITION AND METHOD FOR CONTROLLING, PREVENTING AND/OR REDUCING FORMATION OF INORGANIC SCALE, AND USE OF COMPOSITION

Title:

COMPOSITION AND METHOD FOR CONTROLLING, PREVENTING AND/OR REDUCING FORMATION OF INORGANIC SCALE, AND USE OF COMPOSITION

Document Type and Number:

WIPO Patent Application WO/2018/040097

Kind Code:

A1

Abstract:

Provided is a composition for controlling, preventing and/or reducing the formation of inorganic scale and/or deposits in an aqueous system. The composition comprises a copolymer of phosphinic acid and (meth) acrylic acid or its salt (s), a polycarboxylic acid or its salt (s), at least one monomeric phosphonate comprising phosphonic acid groups, at least one corrosion inhibitor comprising amine groups, and at least one chelating agent. Further disclosed is use of the composition in an aqueous system having water hardness as calcium carbonate in the range of 50–1500 ppm.

Inventors:

LI FENGYANG (CN)
XU YAN (CN)
XU KAIYI (CN)
XIAO LAN (CN)

Application Number:

PCT/CN2016/098065

Publication Date:

March 08, 2018

Filing Date:

September 05, 2016

Export Citation:

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Assignee:

KEMIRA OYJ (FI)
KEMIRA ASIA CO LTD (CN)

International Classes:

C02F5/14

Foreign References:

CA2824904A1	2012-08-09
CN101973644A	2011-02-16
US20100000579A1	2010-01-07
US20120032093A1	2012-02-09
EP0831065A1	1998-03-25
US5707529A	1998-01-13

Attorney, Agent or Firm:

LUNG TIN INTELLECTUAL PROPERTY AGENT LTD. (CN)

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