| 摘要 |
PURPOSE: To obtain a high color density and sufficient image stability by forming a dispersing layer of a specific 1,3-diene homo or copolymer. CONSTITUTION: A disperse phase has a solubility parameter of 8 to 12 (cal/ cm<3> )<1/2> , and is formed of 1,3-diene homo or copolymer partly or completely crosslinked to occupy 20 to 90 wt.% of total of a continuous phase and the disperse phase. The polymer of the disperse phase contains particles having a mean particle size of suitably 0.05 to 2 μm or particularly 0.05 to 0.5 μm. The polymer of the disperse phase is made of 1,3-diene of 40 to 100 wt.% or particularly 60 to 100 wt.%. The continuous phase is suitably made of a polymer not crosslinked having a solubility of Tg>50 deg.C and 8 to 14 (cal/cm<3> )<1/2> . Thus, high color density and sufficient image stability can be obtained. |
