Patent ID: 9120053
Filing Date: 2015-09-01
Classification: B01D

Abstract:
1. A polyolefin-composite hollow-fiber membrane comprising a non-porous, homogeneous membrane layer that is permeable to gas, and a porous membrane layer supporting the homogeneous membrane layer, wherein the homogeneous membrane layer comprises polyolefins having an Mw/Mn ratio of mass average molecular weight (Mw) and number average molecular weight (Mn), of no more than 4.0, and a melt flow rate as measured in accordance with code D of JIS K7210 (MFRD) of no more than 1.0 g/10 min., and wherein the porous membrane layer comprises polyolefins having an Mw/Mn ratio of 8.0 to 12.0 and having a melt flow rate as measured in accordance with code D of JIS K7210 (MFRD) of 0.1 to 1.0 g/10 min.