TWO-PACK TYPE URETHANE COMPOSITION FOR APPLICATION OF URETHANE RUBBER-BASED COATED FILM WATERPROOFING MATERIAL, AND METHOD FOR APPLYING URETHANE RUBBER-BASED COATED FILM WATERPROOFING MATERIAL BY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a two-pack type urethane composition for application of urethane rubber-based coated film waterproofing material, applied by mechanical force feed even without being heated.;SOLUTION: The two-pack type urethane composition consists of a main agent containing an isocyanate-terminated prepolymer obtained by reacting tolylenediisocyanate with a polyol compound as a main component, and a curing agent containing an aromatic polyamine as a main component. The content of a plasticizer in the main agent is ≤30 wt.%, and the ratio of the tolylenediisocyanate to the polyol compound is regulated so that the molar ratio (NCO/OH) of the NCO group of the tolylenediisocyanate to the OH group of the polyol compound is 1.8-2.2. The polyol compound contains 91-100 wt.% of a polyoxypropylene diol and/or a polyoxyethylenepropylene diol, and the average molecular weight of the polyoxypropylene diol and/or the polyoxyethylenepropylene diol is ≥1,500.;COPYRIGHT: (C)2009,JPO&INPIT