Patent ID: 8623962

Claim:
A process to functionalize propylene co-oligomer comprising contacting an alkene metathesis catalyst with a heteroatom containing alkene, and a propylene co-oligomer having an Mn of 300 to 30,000 g/mol (as measured by 1 H NMR) comprising 10 to 90 mol % propylene and 10 to 90 mol % of ethylene, wherein the co-oligomer has at least X % allyl chain ends (relative to total unsaturations), where: 1) X=(−0.94*(mol % ethylene incorporated)+100), when 10 to 60 mol % ethylene is present in the co-oligomer, and 2) X=45, when greater than 60 and less than 70 mol % ethylene is present in the co-oligomer, and 3) X=(1.83*(mol % ethylene incorporated)−83), when 70 to 90 mol % ethylene is present in the co-oligomer; wherein the heteroatom containing alkene is represented by the formula: H 2 C═CH—R or R*—HC═CH—R, where R* and R are, independently, a heteroatom containing group containing 1 to 30 carbon atoms and at least one heteroatom.