| 摘要 |
PURPOSE:To obtain the title agent of polyurethane-base which can fully demonstrate its properties even for watery strata and is excellent in performances in sticking or concreting rocks, sand and mud by mixing specific liquids A and B. CONSTITUTION:The title agent consists of a liquid A comprising a polyol which is composed primarily of a polyether polyol having two or more active OH groups and has an average OH value of 200-600 and a viscosity of 500cP/25 deg.C or less (e.g. a mixture of an adduct of polypropylene glycol with propylene oxide and an adduct of ethylenediamine with propylene oxide) and a liquid B comprising an isocyanate which has two or more active isocyanate groups, is prepolymerized with a specific polyol at its terminals and has a viscosity of 300cP/25 deg.C or less (e.g. a product formed by prepolymerizing the terminals of polymeric MDI with an alkoxypolyalkylene glycol). |
