| 摘要 |
<p>Solns contg. >=60% of polyolefin are introduced into a device consisting of one or more extruders in series having successive zones with gas releasing orifices, the device working at a temp above the b.pt. of the solvent and the last orifices being under a press. decreasing to 100 mm. Hg abs. Suitable for treating H.</p> |
