| abstract |
(57) [Problem] To provide a vinyl-based polymer excellent in weather resistance, heat resistance, adhesiveness, film forming property, etc., having a linear, large molecular weight and low in low molecular components. SOLUTION: This is obtained by polymerizing a vinyl monomer composition containing 80% by weight or more of a vinyl monomer, has a weight average molecular weight of 50,000 or more, a gel fraction of 20% or less, and a dispersion index (Mw / Mn). A vinyl polymer having a molecular weight of 10 or less. |