POLYURETHENE RESIN FORMING COMPOSITION FOR USE IN SEALING MEMBRANE MODULE

摘要

The purpose of the present invention is to provide a polyurethane resin forming composition which is for use in sealing a membrane module and which exhibits a low viscosity and excellent curability and can minimize the odor and peculiar flavor of a treated liquid. This polyurethane resin forming composition for use in sealing a membrane module comprises (A) a polyol component which contains (a) a polyoxyalkylene polyol and/or (b) an ethylene oxide adduct thereof and (B) an organic polyisocyanate component, and is characterized in that: the component (a) bears hydroxypropyl groups at the molecule terminals; the primary hydroxyl content of the groups is 40% or more; the total unsaturation of the components (a) and (b) is 0.010meq/g or less; and the contents of low-boiling by-products (t) in the components (a) and (b) are 0.020wt% or lower relative to the weights of the components (a) and (b) respectively, said low-boiling by-products (t) being by-products which exhibit boiling points of 150°C or lower at normal pressure.