RAW MATERIAL FOR POLYMERIZATION IN MOLD

摘要

PROBLEM TO BE SOLVED: To provide a raw material for polymerization in a mold preventing optical deviation defects and surface concave defects of irregular shape due to inhomogeneous polymerization, causing little coloring in a molded item obtained by polymerizing and curing a polymerizable component such as methyl methacrylate or the like and showing excellent storage stability. SOLUTION: The raw material for polymerization in the mold contains 0.2 to 8 ppm of a polymerization inhibitor and the temperature of the raw material for polymerization in the mold is kept at a temperature not higher than 15°C. COPYRIGHT: (C)2003,JPO