Abstract: The present invention provides an organometallic compound represented by the general formula (1) or (2), process for producing the same, metathesis reaction catalyst containing the same, polymerization process using the same catalyst and polymer produced by the same polymerization process:

Abstract: It is an object of the present invention to provide a polymerizable composition and a cured resin composition, linear expansion coefficients of which are significantly improved without impairment of the excellent properties such as heat resistance, mechanical strength and the like of norbornene-based resins. The present invention is a polymerizable composition, which comprises a polymerizable substance containing a norbornene-based monomer or oligomer as a main component, a metathesis polymerization catalyst and silica powder, the weight content of the silica powder being larger than the weight content of the polymerizable substance.

Abstract: The present invention relates to telechelic polymers having crosslinkable end groups of the formula and methods for preparing the same wherein n is an integer; is an alkadienyl group; Y is an alkyl group; and Z is crosslinkable end group. In general, the inventive synthesis involves reacting a functionalized chain transfer agent having crosslinkable ends with a cycloalkene in the presence of a ruthenium or osmium catalyst of the formula wherein: M is ruthenium or osmium; X and X1 are independently any anionic ligand; L and L1 are any neutral electron donor ligand; R and R1 are each hydrogen or a substituted or unsubstituted substituent wherein the substituent is selected from the group consisting of C1-C20 alkyl, C2-C20 alkenyl, C1-C20 alkynyl, aryl, C1-C20 carboxylate, C1-C20 alkoxy, C2-C20 alkenyloxy, C2-C20 alkynyloxy, aryloxy, C2-C20 alkoxycarbonyl, C1-C20 alkylthio, C1-C20 alkylsulfonyl and C1-C20 alkylsulfinyl.

Abstract: This invention provides a method for producing a polymer alloy, a polymer alloy as well as a molded article, a transparent molded article and an optical film, which is obtainable by using the polymer alloy. The invention is a method for producing a polymer alloy, which comprises at least: a step 1 of mixing two or more resins incompatible with each other at ambient temperature and pressure with a solvent being in a liquid or gas state at ambient temperature and pressure; a step 2 of heating and applying pressure to said solvent into a high-temperature and high-pressure fluid or a supercritical fluid and mixing the solvent in this state; and, a step 3 of cooling the mixture obtained in said step 2 rapidly to the glass transition temperature or less without releasing the pressure of the mixture.

Abstract: It is an object of the invention to provide coated particles excellent in the reliability of connection.

Abstract: A melt-moldable, thermoplastic norbornene resin composition characterized by being obtained by compounding (A) a base polymer comprising a thermoplastic norbornene resin with (B) an olefin compound having a number-average molecular weight of 200 to 10,000 and a softening point of 70 to 170° C.; and a molded article or optical film obtained by melt-molding or extrusion-molding the thermoplastic norbornene resin composition.

Abstract: The present invention provides an organometallic compound represented by the general formula (1) or (2), process for producing the same, metathesis reaction catalyst containing the same, polymerization process using the same catalyst and polymer produced by the same polymerization process: 1

Abstract: The present invention relates to telechelic polymers having crosslinkable end groups of the formula 1

Abstract: The present invention relates to telechelic polymers having crosslinkable end groups of the formula and methods for preparing the same wherein n is an integer; is an alkadienyl group; Y is an alkyl group; and Z is crosslinkable end group. In general, the inventive synthesis involves reacting a functionalized chain transfer agent having crosslinkable ends with a cycloalkene in the presence of a ruthenium or osmium catalyst of the formula wherein: M is ruthenium or osmium; X and X1 are independently any anionic ligand; L and L1 are any neutral electron donor ligand; R and R1 are each hydrogen or a substituted or unsubstituted substituent wherein the substituent is selected from the group consisting of C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, aryl, C1-C20 carboxylate, C1-C20 alkoxy, C2-C20 alkenyloxy, C2-C20 alkynyloxy, aryloxy, C2-C20 alkoxycarbonyl, C1-C20 alkylthio, C1-C20 alkylsulfonyl and C1-C20 alkylsulfinyl.