Patent ID: 8388733

Claim:
A hollow fiber element comprising: a separation membrane module for separating an organic vapor, in which at least one end part of a fiber bundle consisting of multiple hollow fiber membranes having a selective permeability is fixed and bound with a tube sheet formed by a cured material of an epoxy resin composition suitable for cast molding by a stationary method, wherein a resin component of the epoxy resin composition consists essentially of: an epoxy compound (A) represented by the following formula (1): an epoxy compound (B) represented by the following formula (2): wherein R denotes an alkyl group having 1 to 3 carbon atoms or a hydrogen atom, and an aromatic amine compound (C) consisting essentially of 4,4′-diaminodiphenylmethane, wherein the epoxy compound (A) and the epoxy compound (B) are blended in a proportion of 90:10 to 60:40 by weight, and wherein the epoxy resin composition retains gas-tightness under organic vapor with an elevated temperature and high pressure.