| 摘要 |
PURPOSE:To improve sticking to soft PVC and resistance to blocking under high humidity by incorporating a specific vinyl polymer into a toner. CONSTITUTION:A specific vinyl polymer has the group expressed by the formula [I ](where 1, 2 and 3 are the codes for identifying carbon atoms, hydrogen and hydrocarbon groups or a residual polymer group is bonded with the carbon atoms of C<1> and C<3> and the residual monomer group is bonded with at least one of the carbon atoms of C<1> and C<3>). The hydroxyl number thereof is 50- 350 and the glass transition point is 35-190 deg.C. The vinyl polymer is obtainable by polymer or copolymn. of a vinyl mover having secondary hydroxyl group. Such vinyl monomer includes 2-hydroxypropyl methacrylate, 2-hydroxybutyl methacrylate, addition product of glycidyl acrylate and methacrylic acid or acrylic acid. |
