Sughrue Mion, PLLC
Composition for polyurethane resin formation, sealing material, and hollow-fiber membrane module
A polyurethane resin forming composition comprising: a main agent (A) containing an isocyanate group-terminated prepolymer obtained by reacting an isocyanate group-containing compound (a1) with a polyfunctional polyether polyol (b1) having a specific molecular weight distribution obtained by the use of a compound having a functional group number of 8 as an initiator; and a curing agent (B) containing a castor oil-modified polyol (b2) obtained from castor oil and/or a castor oil fatty acid and a trimethylolalkane. This polyurethane resin forming composition is applicable to the production of large-sized hollow-fiber membrane modules and can form cured resins excellent in adhesion property and heat resistance, low in the temperature dependence of hardness and extremely small in the amount of substance eluted into water when immersed in the water.
Nippon Polyurethane Industry Co., Ltd.
C C C B C C C C C C C
C08G C08G C08G B01D C08G C08G C09K C08G C08G C08G C08G
inventional inventional additional inventional inventional inventional inventional inventional inventional inventional inventional
Shyogo Kouji Keiko
Itoh Yamato Yoshida