CALCIUM CARBONATE-BASE SCALE PREVENTIVE AGENT AND METHOD OF MANUFACTURING COPOLYMER FOR CALCIUM CARBONATE-BASE SCALE PREVENTIVE AGENT

摘要

PROBLEM TO BE SOLVED: To obtain a calcium carbonate scale preventive agent which consists of a copolymer (salt) capable of suppressing the adhesion of scale of an aqueous system and more particularly scale of a calcium carbonate system as an effective component.;SOLUTION: This calcium carbonate-base scale preventive agent contains a copolymer which is obtained by aqueous solution polymerization of (a) 70 to 98 wt.% at least one monomer selected from maleic acid, maleic anhydride, phthalic acid and itaconic acid and (b) a monomer consisting of 2 to 30 wt.% water-soluble monomers exclusive of (a) and is a number average molecular weight of 400 to 1,000 or its salt.;COPYRIGHT: (C)2001,JPO