POLYURETHANE REACTIVE HOT MELT ADHESIVE COMPOSITION

摘要

Prepolymer comprising the reaction product of: a) one or more polyisocyanates; and b) i) one or more copolymer polyols having a solid dispersed in a continuous phase or ii) a mixture of one or more copolymer polyols having a solid dispersed in a continuous phase or iii) one or more alkoxylated bisphenols; or iv) a mixture thereof; wherein the prepolymer has an isocyanate content of 2 to 5 percent by weight. Reactive hot melt adhesive comprising the prepolymer of the invention wherein the prepolymer has an application temperature of from 50 to 140 DEG C and a viscosity at the application temperature of from 3,000 to 50,000 centipoise. Method of bonding using the adhesive of the invention.