Birch Stewart Kolasch & Birch, LLP
Olefin polymer and process for preparing the same
Olefin polymer with narrow molecular weight distribution and specific molecular weight, olefin polymer having functional group introduced at terminal, tapered polymer containing segment wherein monomer composition continuously changes in the polymer chain, olefin polymer having different segments bonded to each other, and process for preparing these polymers. The olefin polymers are polymers of C2-20 carbon atom olefins and have a number-average molecular weight of ≧500 and Mw/Mn of ≦1.5. In syntheses, an olefin of 2-20 carbon atoms is polymerized in the presence of a catalyst comprising a transition metal compound represented by the formula LmMXn wherein M is a transition metal atom of Group 3-11, m is 1-5, n is a number satisfying a valence of M, L is a ligand—coordinated to the central metal M—which contains a heteroatom having no direct bond to the central metal, and X is e.g. halogen or a hydrocarbon.
Mitsui Chemicals, Inc.
C C C C C C C C
C08F C08F C08F C08F C08F C08F C08L C08F
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Makoto Shigekazu Seiichi Naoto Kazutaka Junji Takashi Norio Tomoaki Junichi Shinichi Terunori Hidetsugu Yasunori
Mitani Matsui Ishii Matsukawa Tsuru Saito Nakano Kashiwa Matsugi Mohri Kojoh Fujita Tanaka Yoshida