SOIL-CONDITIONER AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a soil-conditioner having high added value by using a copolymer containing acrylonitrile and one or more kinds of styrene or conjugated diene as constituent units or a used waste resin of the copolymer in place of a regeneration method by heating and melting. SOLUTION: The soil-conditioner is produced from a copolymer containing acrylonitrile and at least one kind of styrene and/or conjugated diene as a constituent unit. It contains a salt produced by neutralizing the acid group of the 1st acid added as a substituent to the copolymer with a base component, a salt produced by neutralizing the 2nd acid having acid group different from that of the 1st acid with the same base component, an unreacted nitrile group and a hydrolyzed product of nitrile group.