초록 ▼

Disclosed are a phosphorescent synthetic resin material capable of absorbing and accumulating light therein in the light and phosphorescing in the dark, a method for the production of the material, and a formed article or molded article made of the phosphorescent synthetic resin material. The phosph

Disclosed are a phosphorescent synthetic resin material capable of absorbing and accumulating light therein in the light and phosphorescing in the dark, a method for the production of the material, and a formed article or molded article made of the phosphorescent synthetic resin material. The phosphorescent synthetic resin material having a phosphorescent pigment, SrAl2O4, uniformly dispersed in the synthetic resin is obtained by mixing the synthetic resin with the phosphorescent pigment and an activator and kneading the resultant mixture at a temperature 10 to 20°C. higher than the melting point of the synthetic resin. In a preferred embodiment, the resultant compound is extruded at a temperature 10°to 20°C. higher than the melting point of the synthetic resin under an extrusion pressure in the range of 50 to 130 kg/cm2 and the extruded strands are chopped to produce pellets. By injection molding or extrusion molding the produced pellets into a desired shape, the formed article of synthetic resin possessing outstanding phosphorescent properties is obtained.

대표청구항 ▼

A phosphorescent synthetic resin material comprising: a synthetic resin; from about 5 to about 20% by weight of an SrAl2O4 phosphorescent pigment; and from about 0.05 to about 0.5% by weight of an activator, based upon the total weight of said phosphorescent synthetic resin material, said activator

A phosphorescent synthetic resin material comprising: a synthetic resin; from about 5 to about 20% by weight of an SrAl2O4 phosphorescent pigment; and from about 0.05 to about 0.5% by weight of an activator, based upon the total weight of said phosphorescent synthetic resin material, said activator comprising a surfactant containing liquid paraffin at a concentration of not less than about 70% by weight, based upon the weight of said activator.