Abstract: The mixing system includes a first container filled with a polyol composition, a second container filled with an isocyanate composition, and a stationary mixer configured to mix the polyol composition discharged from the first container and the isocyanate composition discharged from the second container. The polyol composition includes a polyol, a catalyst, and a low boiling point compound having a boiling point of less than 0° C. The isocyanate composition includes an isocyanate compound and a low boiling point compound having a boiling point of less than 0° C. The first container and the second container each have an internal pressure in a range of 0.3 to 1.0 MPa at 35° C., and a mixer portion of the stationary mixer has a length of 30 to 230 mm. A mixing system can be provided that enhances the mixability of a polyol composition and a polyisocyanate composition in a stationary mixer and prevents curing in the stationary mixer.

Abstract: A polyurethane composition raw material liquid agent filled in a cartridge-like container comprises a polyol or a polyisocyanate, and a filler, wherein the polyurethane composition raw material liquid agent has a viscosity at 25° C. and a rotation speed of 10 rpm of 2300 mPa·s or more. The filler may include a solid flame retardant. The polyurethane composition raw material liquid agent and another polyurethane composition raw material liquid agent are mixed and discharged to form a polyurethane composition.

Abstract: A polyurethane composition raw material liquid agent comprises a polyol or an isocyanate, and a filler. The polyurethane composition raw material liquid agent has a viscosity at 25° C. and a rotation speed of 60 rpm of 950 mPa·s or less, and is filled in at least one cartridge-like container of a caulking gun that includes two cartridge-like containers and is capable of mixing two components.

Abstract: A mixed liquid agent of the present invention comprises a polyol compound, a catalyst, a flame retardant, and an organic solvent. The flame retardant includes a solid flame retardant. The organic solvent has a vapor pressure at 20° C. of 0.1 MPaG or more. A viscosity at 1 rpm and 25° C. after the organic solvent has been volatilized is 4,000 mPa·s or more and less than 250,000 mPa·s.