Mitsui Chemicals, Inc.

Agency for Science, Technology and Research

Daiichi Suntory Pharma Co., Ltd.

Takushi Nagata

Kazuhiko Yoshinaga

Tatsuya Nakamura

Toshiyuki Tsutsui

Tetsunori Shinozaki

Akira Mizuno

Atsushi Shibahara

Tetsuhiro Matsumoto

Satoru Miyazoe

Kazuto Sekiuchi

Teruo Muraishi

Ramalingam Balamurugan

Kisu Ro

Kourei Kuroiwa

Manabu Wadamoto

Seayad Abdul Majeed

Chai Christina L L

The present invention provides a process for producing an &#x3b1;-olefin polymer comprising polymerizing or copolymerizing (a) Cor higher &#x3b1;-olefin(s) in the presence of an olefin polymerization catalyst comprising solid titanium catalyst component (I) containing titanium, magnesium, halogen, and a compound with a specific structure having two or more ether linkages and organometallic catalyst component (II) with high catalytic activity. In this process, particularly even in (co)polymerizing (a) higher olefin(s), demineralization is unnecessary. A 4-methyl-1-pentene-based polymer obtained by polymerization using the catalyst of the present invention is excellent in tacticity, transparency, heat resistance, and releasability, and the polymer is particularly suitable for a release film.

Solid titanium catalyst component, olefin polymerization catalyst, and process for producing olefin polymer

Disclosed is a method for producing an optically active alcohol including reacting a titanium compound, an aromatic magnesium compound and a carbonyl compound in the presence of an optically active biphenol compound having a predetermined structure and an ether compound having a predetermined structure.

Method for producing optically active alcohol

The present invention relates to a titanium compound produced from a reaction mixture of a titanium tetraalkoxide compound with water and an optically active ligand represented by the following general formula (1), or a titanium oxoalkoxide compound and an optically active ligand represented by the following general formula (1),  wherein, in the formula, R, Rand Rindependently represent a hydrogen atom, an alkyl group or the like, and A* represents a hydrocarbon-containing group with three or more carbon atoms having an asymmetric carbon atom or axial asymmetry. The invention further relates to a process for producing optically active cyanohydrins which is characterized by reacting a carbonyl compound with a cyanating agent in the presence of such a titanium compound.

Titanium compound and process for producing optically active cyanohydrins

Process for production of optically active pyrroloazepine derivatives

Growing community of inventors

Singapore, Singapore

Takushi Nagata