CARBOXYL/SULFONE/QUATERNARY AMMONIUM POLYMER FOR SCALE AND CORROSION INHIBITOR

摘要

Corrosion and the formation and deposition of scale in aqueous systems is inhibited by addind to the system at least 0.1 ppm of a watersoluble polymer having an intrinsic viscosity of 0.05 to 2.5 dl/g, prepared from:… (a) 50 to 90% weight of an unsaturated carboxylic acid or its sa… (b) 5 to 40% by weight of an unsaturated sulfonic acid or its sa and… (c) 5 to 40% weight of an unsaturated quaternary ammonium compound. Water-soluble polymers having an intrinsic viscosity of 0.05 to 2.5 and prepared from… (a) 50 to 90% by weight of an unsaturated carboxylic compound that is acrylic acid, methacrylic acid, a salt of either or a mixture of two or more such compounds;… (b) 5 to 40% by weight of an unsaturated sulfonic compound that is 2-acrylamido-2-methylpropylsulfonic acid, 2-methacryl-amido-2-methylpropylsulfonic acid, a salt of either or a mixture of two or more such compounds; and… (c) 5 to 40% by weight of dimethyl diallyl ammonium chloride or diethyl diallyl ammonium chloride or a mixture of them are novel and can be used in the above method of inhibition.