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EP 0225051 B1 19920219 - THE TREATMENT OF AQUEOUS SYSTEMS

Title (en)

THE TREATMENT OF AQUEOUS SYSTEMS

Publication

EP 0225051 B1 19920219 (EN)

Application

EP 86308419 A 19861029

Priority

GB 8526590 A 19851029
GB 8623464 A 19860930

Abstract (en)

[origin: EP0225051A1] A method of treating an aqueous system is disclosed which comprises adding thereto a water-soluble zinc salt, a chelant and either a product containing at least one phosphorus-containing acid group and at least one carboxylic acid group or an acrylic, vinyl or allyl carboxylic acid polymer.

IPC 1-7

C02F 5/14; C23F 11/167; C23F 11/18; C23G 5/00

IPC 8 full level

C02F 5/14 (2006.01); C23F 11/08 (2006.01); C23F 11/167 (2006.01); C23F 11/18 (2006.01); C23G 5/00 (2006.01)

CPC (source: EP)

C23F 11/08 (2013.01)

Designated contracting state (EPC)

AT BE CH DE ES FR GB IT LI LU NL SE

DOCDB simple family (publication)

EP 0225051 A1 19870610; EP 0225051 B1 19920219; AT E72678 T1 19920315; AU 6456486 A 19870430; CA 1332138 C 19940927; DE 3683928 D1 19920326; ES 2038595 T3 19930801

DOCDB simple family (application)

EP 86308419 A 19861029; AT 86308419 T 19861029; AU 6456486 A 19861029; CA 521449 A 19861027; DE 3683928 T 19861029; ES 86308419 T 19861029