Poly aspartic acid and poly carboxylic acid and copolymer null

摘要

(57) Abstract The copolymer of the poly aspartic acid which is appropriate in prevention of scale accumulation, maleic acid and further poly carboxylic acid and stoichiometrically excessive ammonia, 120 - the 350, desirably reacting with 180, - the 300 it could by generating the copolymer of porisukushinimido. With 2nd execution feature, the polyamine, was added to reaction mixed liquid. Next, as for these intermediate field porisukushinimidokoporima, it was possible to transform in the salt of the copolymer of poly aspartic acid with the hydrolysis by hydroxide. That kind of copolymer, although accumulation of the scale is prevented from the water, is useful, the application in water treating is discovered. Other applications include the scale prevention additive for the detergent. That kind of copolymer prevents the dental calculus and plaque formation.