| 摘要 |
PURPOSE:To improve hole-forming efficiency of an optical storage material by dispersing a porphyrin compd. into a matrix comprising a polyester resin. CONSTITUTION:A porphyrin compd. is dispersed in a matrix comprising a polyester resin. Suitable amt. of the porphyrin compd. to be contained in the polyester matrix is 10<-1>-10<-6> mole/liter matrix, but 10<-1>-10<-4> mole/liter concn. is more preferred considering the solubility, film-forming property, dispersibility in the matrix, absorbance, film thickness, etc. Thus, the hole-forming efficiency of an optical storage material is improved, and a writing speed is fastened. |
