Patent ID: 9694313
Date: 2017-07-04
CPC Classifications: B01D,C08J,C08K,C08L

Claim:
1. A composite hollow fiber membrane comprising a hydrophobic non-porous homogeneous layer having gas permeability and a hydrophilic porous support layer, wherein: the hydrophilic porous support layer supports the hydrophobic non-porous homogeneous layer, the hydrophilic porous support layer is constituted by a polyolefin-based resin composition that comprises a polyolefin-based resin and a hydrophilic additive that is dispersed throughout said polyolefin-based resins, the hydrophilic additive consists of one or more nonionic surfactants, and the content of the hydrophilic additive in the polyolefin-based resin composition is 0.01 to 10% by mass relative to the mass of polyolefin-based resin.