Patent ID: 8796348

Claim:
An isocyanate free, radiation curable hot melt coating composition comprising a solvent-free radiation curable polymer component; an oligomer component; a photoinitiator and optionally a monomer component, wherein the polymer component comprises poly(meth)acrylate segments and polyurethane segments, has a Mn>2000 g per mole and has at least one functional group polymerisable under UV radiation, the oligomeric component has Mn from 500 to 5000 g per mole and contains at least two functional groups polymerisable under UV radiation, the monomer component has Mn from 100 to 1000 g per mole and contains at least one functional group polymerisable under UV radiation, and the coating composition is solid at room temperature and has a melt viscosity greater than about 3700 cP at the coating composition application temperature.