Novel end-functionalized polyolefin prepared via ring opening metathesis polymerization in the presence of a novel chain transfer agent, and a process for the preparation of the end-functionalized polyolefin via ring opening metathesis polymerization

摘要

This invention relates to novel end-functionalized, linear, non-crosslinked polyolefins without pendant chain branched groups, and to a process for the preparation of these end-functionalized, linear, non-crosslinked polyolefins. These non-crosslinked polyolefins comprise the reaction product of (A) a cyclic olefin monomer, with (B) a chain transfer agent, in the presence of (C) at least one catalyst, preferably a ruthenium metal carbene catalyst. The polyolefins of the present invention are characterized as having a functionality as defined by vapor phase osmometry (VPO) and end group titration in the range of from 1.7 to 2.2, and correspond to a specified structure. Suitable chain transfer agents for the presently claimed polyolefins comprise the reaction product of at least one unsaturated diol and at least one alkylene oxide in relative molar ratios of from 1:1 to 1:1000. These polyolefins are prepared via ring opening metathesis polymerization (ROMP).