Darby & Darby
Syndiotactic styrene polymers and process for the production thereof
A syndiotactic styrenic polymer having a narrow molecular weight distribution which is a (co)polymer comprising at least one structural unit represented by the following Formula (1): wherein C1 of a phenyl group thereof has a tacticity of 30% or more in terms of a racemic pentad determined by 13C-NMR, and Ra and m are as defined in the specification. The disclosure is also directed to a block copolymer comprising the above polymer as one segment, to a block graft polymer prepared by modifying one block of the above polymer with a nitrogen-containing aromatic polymer, and to a process for preparing a syndiotactic styrenic polymer in which a styrenic monomer is polymerized in the presence of a catalyst comprising a reaction product of a transition metal compound and at least one co-catalyst selected from organic aluminunoxy compounds.
National Institute of Advanced Industrial Science and Technology Japan Chemical Innovation Institute
C C C C C C C C C C C C C C
C08F C08F C07F C08F C08F C08F C08F C08F C08F C08F C08F C08F C08F C08F
additional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional additional inventional inventional
Toshio The Ban Michihiko Masahide Akira Jizhu Yoshifumi Masanao Hideaki Yasuzo Hiroyuki Kazuo Kenji
Kase Hoang Asai Murata Miyazawa Jin Fukui Kawabe Hagihara Suzuki Ozaki Soga Tsuchihara