| abstract |
This invention relates to hot melt polyurethane adhesive or sealant compositions which are solid at room temperature. The adhesive or sealant compositions comprise a hot melt polyurethane adhesive or sealant composition comprising (a) a urethane prepolymer; (b) a polyester resin; and (c) a reactive tackifier represented by the formula: n n n wherein R is selected from the group consisting of tall oils, abietic acid, isomeric mixtures of abietic acid, and mixtures thereof, and n is an integer from 1 to about 4. |