| abstract |
PCT No. PCT/JP96/01386 Sec. 371 Date Jan. 24, 1997 Sec. 102(e) Date Jan. 24, 1997 PCT Filed May 24, 1996 PCT Pub. No. WO96/37575 PCT Pub. Date Nov. 28, 1996A process for producing a photochromic cured product by allowing an unpurified, impurities-containing polyfunctional (meth)acrylate monomer such as unpurified polyalkylene glycol dimethacrylate and a photochromic spirooxazine compound to contain a compound having at least one epoxy group in the molecule such as glycidyl methacrylate and then polymerizing the resulting composition. The process can provide a spirooxazine-based photochromic cured product which hardy undergoes initial coloring and is superior in initial color-developing performance. |