| 摘要 |
<p>A porous polyolefin is produced by synthesizing particles of silica, polysiloxane or cross-linked vinyl polymers having a mean particle diameter of 0.01 to 0.1 νm in a molten polyolefin to form a polyolefin composition, and subjecting the composition to molding and stretching. The porous polyolefin contains fine particles in a state dispersed substantially without agglomeration and have through pores having a mean pore diameter of 0.005 to 0.1 νm, and therefore is suitably usable as a high efficiency air filter for the removal of dust or bacteria, a membrane for various liquid-liquid separations, a supporting material for microfiltration or ultra-filtration, or a separator for batteries.</p> |
