The terpolymers of 2 - acrylamido - 2 - methyl - propanesulfonic, acrylamide and acrylsaeure in the form of their salue, particularly alkali - and ammonium salts, process for the production of these terpolymers and process for the prevention of incrustations in aqueous systems with the use of these terpolymers

摘要

Novel polymers of a) 2-acrylamido-2- methylpropanesulphonic acid, b) acrylamide and/or methacrylamide, and c) acrylic acid and/or methacrylic acid especially salts thereof with, e.g., alkali ammonia, and amines are especially effective as treating agents for the prevention and/or removal of coating and encrustation on industrial plant apparatus such as boilers, turbines and pumps. The preferred polymers and salts comprise from 0.5 to 50% by weight of component (a), from 5 to 40% by weight of component (b) and have a molecular weight within the range of from 1,000 to 10,000.