| 摘要 |
<p>Disclosed is a polymer crystal which comprises a crystal of a polymer and satisfies the following requirements (I) and (II) or the following requirements (I) and (III): (I) the polymer crystal has a degree of crystallinity of 70% or more; (II) the polymer crystal has a crystal size of 300 nm or less; and (III) the polymer crystal has a population density of 40μm-3 or greater. The polymer crystal is excellent in properties including mechanical strength, heat resistance and transparency. Particularly, the polymer crystal can be used as a general-purpose plastic (e.g., a PP) excellent in properties including mechanical strength, heat resistance and transparency.</p> |
