Samsung Electronics Co., Ltd.

Samsung General Chemicals, Co., Ltd.

Samsung General Chemical Co., Ltd.

Keun-Byoung Yoon

Yi-Yeol Lyu

Seok Gyun Chang

Won-Cheol Jung

Jin Heong Yim

Duck-Joo Yang

Styrene/macromonomer random polymer having excellent melt flowability and impact strength and method of preparing the same

The metallocene complexes according to the present invention are prepared by reacting a transition metal complex of Group III-X of the Periodic Table, having at least one cycloalkanedienyl group, with a compound having at least two functional groups. The transition metal complex has a main ligand such as a cycloalkanedienyl group and at least one ancillary ligand which coordinated to a transition metal of Group III-X. The functional groups in the compound having at least two functional group are selected from the group consisting of a hydroxyl group (&mdash;OH), a thiol group (&mdash;SH), a primary amine group (&mdash;NH,), a secondary amine group (RNH&mdash;), a tertiary amine group (RR&prime;N) a primary phosphorous group (&mdash;PH,), a secondary phosphorous group (RPH&mdash;), a tertiary phosphorous group (RR&prime;P), a thiirane group

Metallocene complexes and method of preparing the same

The new metallocene catalysts according to the present invention are prepared by reacting a metallocene compound with a compound having at least two functional groups. The metallocene compound is a transition metal compound, which is coordinated with a main ligand such as cyclopentadienyl group, and an ancillary ligand. The functional groups in the compound are selected from the group consisting of a hydroxyl group, an alkyl or aryl magnesium halide, a thiol group, a primary amine group, a secondary amine group, a primary phosphorous group, a secondary phosphorous group, etc. The metallocene catalysts according to the present invention have a structure in which an ancillary ligand of a metallocene compound is bonded to the functional groups of a compound having at least two functional groups. A structure of the metallocene catalysts can be varied with the type of a metallocene compound and a compound having at least two functional groups, and the molar ratio of each reactant. The metallocene catalysts are employed with a co-catalyst for olefin polymerization. The co-catalyst is an organometallic compound, or a mixture of non-coordinated Lewis acid and alkylaluminium as it is well known in the art.

Metallocene catalysts for olefin polymerization and method of polymerizing olefins using the metallocene catalysts

Growing community of inventors

Taejeon, South Korea

Keun-Byoung Yoon