초록

A method for interacting Prussian blue with polyacrylonitrile in the presence of dimethylformamide to produce a polymer solid exhibiting a high degree of color fastness, levelness, and stability and having enhanced and highly useful electrical properties.

대표청구항 ▼

A method for reacting color agents selected from the group consisting of hydrated metal cyanide complexes, and iodine with polyacrylonitrile homopolymers and copolymers to provide a polymer solid exhibiting enhanced electrical properties and color characteristics, said method comprising the steps of

A method for reacting color agents selected from the group consisting of hydrated metal cyanide complexes, and iodine with polyacrylonitrile homopolymers and copolymers to provide a polymer solid exhibiting enhanced electrical properties and color characteristics, said method comprising the steps of: a. preparing a polymer solution of acrylonitrile polymer in a solvent selected from the group consisting of dimethyl formamide and dimethyl sulfoxide at a concentration below 20 weight-percent polymer, b. preparing an aqueous dispersion of an additive selected from the group consisting of hydrated metal cyanide complexes, iodine and mixtures thereof at a concentration below 0.1 Molar, c. agitating said polymer solution while slowly adding thereto said aqueous dispersion to provide a substantially homogeneous fluid system, d. evaporating said fluid system to remove said solvent and water therefrom, to provide a homogeneous, colored solid comprising an acrylonitrile polymer containing the additive distributed therethrough as an essentially molecularly dispersed phase.