Zeon Corporation

Seiji Okada

Yasuo Tsunogae

Wolfgang Anton Herrmann

Kazunori Taguchi

Masato Sakamoto

Shintaro Ikeda

Kentarou Tamura

Karl Oefele

A liquid crystalline compound shown by the following formula (I). wherein Rto Rrepresent a hydrogen atom, a fluorine atom, a methyl group, a trifluoromethoxy group, or a cyano group, X represents &#x2014;O&#x2014;, &#x2014;O&#x2014;CO&#x2014;, or the like, n is 0 or 1, and Rrepresents -A-CO&#x2014;CH&#x2550;CH, wherein A is a linking group. The liquid crystalline compound has a higher liquid crystal phase upper limit temperature, is chemically stable, can be inexpensively produced, and exhibits a large selective reflection wavelength zone &#x394;&#x3bb; (a large &#x394;n). A liquid crystalline composition comprising the liquid crystalline compounds, an optical film having a liquid crystal layer formed using the liquid crystalline composition, and an optical laminate comprising a substrate, an alignment film formed on the substrate, a liquid crystal layer formed using the liquid crystalline composition on the alignment film are also disclosed.

Liquid crystalline compound, liquid crystalline composition, optical film, and optical laminate

The present invention relates to ruthenium complex compound wherein a heteroatom-containing carbene compound having a six-membered ring structure is bonded to ruthenium and a process for the preparation thereof; a process for producing ring-opened cyclic olefin polymer by subjecting a cyclic olefin to ring-opening metathesis polymerization in the presence of such a ruthenium complex compound; and a process for producing hydrogenated product of ring-opened cyclic olefin polymers by hydrogenating the carbon-carbon double bonds of the above ring-opened polymers. The invention gives hydrogenated product of ring-opened cyclic olefin polymers having physical properties different from those of hydrogenated product of ring-opened polymers of the prior art. Particularly, the use of dicyclopentadiene can give a hydrogenated product of ring-opened cyclic olefin polymer excellent in heat resistance, and this product can be advantageously used as parts or formed products for medical appliances or electrical components.

Ruthenium complexes, process for preparation thereof, and processes for producing open-ring polymer of cycloolefins and hydrogenation products thereof by using the complex as catalyst

A norbornene ring-opened polymer which in the molecule has repeating units represented by the formula (1):wherein Rrepresents Q, Rrepresents Q or C(&#x2550;O)R, Rrepresents Q or C(&#x2550;O)R, and Rrepresents Q or X&#x2014;C(&#x2550;O)R(wherein Q represents hydrogen, a Chydrocarbon group, etc.; R, Rand Reach represents hydroxyl, Calkoxyl, etc., provided that Rand Rmay be bonded to each other to constitute oxygen, NH, etc.; X represents methylene, etc., provided that when Ris Q, then Ris C(&#x2550;O)Rand Ris X&#x2014;C(&#x2550;O)Rand that when Ris Q, then Ris C(&#x2550;O)R, Ris C(&#x2550;O)R, and the configuration of Rand Ris trans, and m is 0 or 1), the polymer having a weight-average molecular weight as determined by gel permeation chromatography of 1,000 to 1,000,000. Also provided is a hydrogenation product of the norbornene ring-opened polymer. The norbornene ring-opened polymer and the hydrogenation product are excellent in heat resistance, electrical properties, etc.

Norbornene-based ring-opening polymerization polymer, product of hydrogenation of norbornene-based ring-opening polymerization polymer, and processes for producing these

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Tokyo, Japan

Seiji Okada