31305811emulsionPT2026-03-30 20:22:16UF31305812colloid, image-bearingNDUF31305813emulsion layerNDUF31305814image-bearing colloidNDUF31305815layer, emulsionNDBT31298938materials by formPTNT31319712oil-in-water emulsionPTNT31319716microemulsionPT