Patent ID: 8236878

Claim:
A process for preparing a functionalized polymer composition comprising: a) providing a hydrocarbon resin; b) providing a polyolefin, wherein the polyolefin is a polyethylene polymer that has a molecular weight (Mw) of at least 20000 or a C3 to C40 polyolefin having a molecular weight (Mw) of 50000 or more; c) providing a graft monomer; the process further comprising d) dispersing the hydrocarbon resin in the polyolefin to form a dispersion, followed by e) adding the graft monomer under shear to said dispersion; wherein the hydrocarbon resin is compatible with the polyolefin, wherein a radical initiator is added to the dispersion in or after step e), wherein a weight ratio of the radical initiator to the graft monomer in the dispersion is less than 1:2, and further comprising grafting the graft monomer in the dispersion to the hydrocarbon resin and the polyolefin, whereby the hydrocarbon resin in the functionalized polymer composition is compatible with the grafted hydrocarbon resin, the polyolefin in the functionalized polymer composition is compatible with the grafted polyolefin, and the grafted hydrocarbon resin is compatible with the grafted polyolefin.