Vinylidene cyanide copolymer.

摘要

Disclosed is a vinylidene cyanide copolymer obtained by copolymerization of vinylidene cyanide and two kinds of vinyl compounds. By formation of a ternary copolymer, a monomer difficultly copolymerizable with vinylidene cyanide can be incorporated into the polymer, and high piezoelectric performance can be obtained when polarized.