Patent ID: 7897709

Claim:
A process of producing a single-chain-end functionalized polyolefin, comprising performing step 1, followed by step 2 in the presence of an olefin polymerizing catalyst comprising a compound (A), which comprises a transition metal in groups IV to V to form the single-chain-end functionized polyolefin of formula (I); wherein step 1 comprises contacting compound (A) with a polar-group-containing olefin (C) represented by the following general formula (II): CHA=C(R)-Q-Y′ (II) wherein Y′ comprises at least one element selected from the group consisting of oxygen, sulfur, nitrogen, phosphorus and halogen, Q is an alkylene group which may have a substituent, a carbonyl group, or bivalent oxygen, A and R each represent a hydrogen atom or a hydrocarbon group which may have a substituent, and A or R may be bonded together to Q to form a ring, wherein step 2 comprises contacting the product of step 1 with at least one olefin (D) selected from the group consisting of ethylene and olefins having 3 to 20 carbon atoms n times, wherein n is an integer of 1 or more, so as to mix them, provided that when n is an integer of 2 or more, the olefins (D) used in the respective contact operations are different in kind or composition, wherein said single-chain-end functionalized polyolefin is represented by the following formula (I): P—X (I) wherein X comprises at least one element selected from the group consisting of oxygen, sulfur, nitrogen, phosphorus and halogen, P represents a polymer chain selected from the group consisting of ethylene and olefins having 3 to 20 carbon atoms, and X is bonded to a terminal of P.