| abstract |
The disclosed urethane sealant compositions comprise a base and a curing agent comprising a urethane prepolymer. Wherein the curing agent is selected from the group consisting of 30 to 50 wt% of polyol, 5 to 25 wt% of hollow filler, 20 to 50 wt% of thixotropic agent, 5 to 20 wt% of filler, 0.1 to 1 wt% of pigment, 1 to 10 wt% of plasticizer, 0.5 to 3% by weight. |