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AssigneeMitsui Chemicals, Inc.
InventorsHideyuki Kaneko, Shin-ichi Kojoh, Nobuo Kawahara, Shingo Matsuo, Tomoaki Matsugi, Junji Saito, Sadahiko Matsuura, Kazuhisa Miyazaki, Norio Kashiwa
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A novel graft polymer useful in various uses that has a polyolefin backbone having polyolefin segments excellent in moldability can be obtained by homopolymerizing a novel polyolefin macromonomer or polymerizing the novel polyolefin macromonomer in the coexistence of other olefins depending on need, wherein the macromonomer has at the terminal of its polyolefin chain a vinyl group whose α-position may be substituted, and the macromonomer can be efficiently obtained by a method, for example, successively carrying out i) a step of producing a polyolefin having a hydroxyl group at the terminal of the polyolefin chain and ii) a step of converting the terminal hydroxyl group of the polyolefin in chain into an acryloyl group, a methacryloyl group or a styryl group.
A polyolefin macromonomer comprising a polyolefin chain (P), a vinyl group (X) which may be substituted at the a-position thereof, and a linking group (Z) for connecting both, represented by the following general formula (I):
A graft polymer having a polyolefin backbone obtained by polymerizing a polyolefin macromonomer comprising a polyolefin chain (P), a vinyl group (X) which may be substituted at the a-position thereof, and a linking group (Z) for connecting both, represented by the following general formula (I):
Dependencies are inferred from the claim text.