SYNDIOTACTIC STYRENE POLYMERS AND PROCESS FOR THE PRODUCTION THEREOF

• Main Authors: SOGA HISAE(HEIRESS OF KAZUO SOGA (DECEASED), OZAKI, HIROYUKI, SOGA, KAZUO, KAWABE, MASANAO, TSUCHIHARA, KENJI, HOANG, THE, BAN, FUKUI, YOSHIFUMI, HAGIHARA, HIDEAKI, KASE, TOSHIO, JIN, JIZHU, MURATA, MASAHIDE, ASAI, MICHIHIKO, SUZUKI, YASUZO, MIYAZAWA, AKIRA
• Format: Patent
• Language: English; French; German
• Published: 30.06.2004
• Edition: 7
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

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 R represents a hydrogen atom, a halogen atom, a hydrocarbon group having 1 to 30 carbon atoms or a substituent containing at least one selected from the group consisting of an oxygen atom, a nitrogen atom, a phosphorus atom, a selenium atom, a silicon atom, a tin atom and a germanium atom; and m represents an integer of 0 to 5, provided that when m is plural, respective R's may be the same or different), wherein C1 carbon of a phenyl group thereof has a tacticity of 30 % or more in terms of a racemic pentad determined by C-NMR, a block copolymer comprising the above polymer as one segment, a block.graft polymer prepared by modifying one block of the above polymer with a nitrogen-containing aromatic polymer and a production process for 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 selected from compounds represented by the following Formulas (4) and (5): MR xR yR zX 4-(x+y+z) MR uR vX 3-(u+v) and at least one co-catalyst selected from an organic aluminumoxy compound and the like.