| 摘要 |
<p>A high-molecular aliphatic polyester having excellent properties, a melt viscosity necessary for molding and a wide molecular weight distribution and being usable in various fields of films, moldings, fibers and so forth is produced by the reaction of 100 parts by weight of a polyester, prepared by the reaction among a glycol component, an aliphatic dicarboxylic acid component and a tri- or tetrafunctional component and having a number-average molecular weight of 10,000 or above, a weight-average molecular weight of 30,000 or above, terminal groups substantially comprising hydroxyl groups and a melting point of 60 °C or above, with 0.1 to 3 parts by weight of a polyisocyanate in a molten state of the polyester.</p> |
