| 摘要 |
<p>A polymer is precipitated from a cement containing the polymer dissolved in a nonpolar solvent by mixing the cement with a nonsolvent alcohol and water wherein the relative amount of water to the alcohol is different from the alcohol/water azeotropic composition and being such as to produce a polymer product in the form of discrete particles, the product having bulk density in excess of 0.08 g/cc or 5 Ib/ft3, is capable of being easily filtered and dried, and is a polymer of a monomer that contains at least one norbornene group.</p> |
