Patent application number | Description | Published |
20090018296 | Norbornene Addition Copolymer and Moldings - A norbornene addition copolymer obtained by subjecting a norbornene monomer (A), an aromatic vinyl compound (B), and an α-olefin having 2 to 20 cabon atoms (C) to addition copolymerization, the sum of the content of repeating units derived from the norbornene monomer (A) and the content of repeating units derived from the aromatic vinyl compound (B) being 25 to 90 mol % based on the total repeating units, and the content of repeating units derived from the aromatic vinyl compound (B) being 0.55 to 10 (mol) times the content of repeating units derived from the norbornene monomer (A); and a molded article obtained by molding the norbornene addition copolymer. According to the present invention, a norbornene addition copolymer exhibiting excellent transparency, a high refractive index, and a small intrinsic birefringence value, and a molded article obtained by molding the norbornene addition copolymer are provided. | 01-15-2009 |
20090124769 | Process for producing cycloolefin addition polymer, catalyst for addition polymerization of cycloolefin, and transition metal compound - A process for producing a cycloolefin addition polymer comprising addition-polymerizing a cycloolefin in the presence of a catalyst comprising a combination of a specific transition metal compound of Group 4 of the Periodic Table, with an organoaluminum oxy compound, and/or a compound capable of reacting with the Group 4 transition metal compound to form an ion pair. The specific group 4 transition metal compound preferably has a structure such that the group 4 transition metal is bonded to a cyclopentadienyl ring in an η | 05-14-2009 |
20090143523 | Cycloolefin additon polymer, composite material and molded article thereof, and optical material - [Problems] To provide a cycloolefin addition polymer that is capable of satisfying high heat resistance and high refractive index simultaneously, a composite material of the cycloolefin addition polymer with an inorganic material, and a molded article thereof. | 06-04-2009 |
20090221750 | Thermoplastic Resin, Method for Producing Same and Molding Material - A thermoplastic resin comprising a block copolymer or a graft copolymer possessing (A) a crystalline hydrogenated norbornene ring-opening polymer unit and (B) a non-crystalline polymer unit having a glass transition temperature of 40 to 300° C.; A method for producing thermoplastic resin comprising hydrogenating a block copolymer or a graft copolymer possessing a norbornene ring-opening polymer unit (C) and a polymer unit (D) which is converted into the above-mentioned non-crystalline polymer unit (B) after hydrogenation, in the presence of a hydrogenation catalyst; and a molding material comprising the thermoplastic resin are provided. The thermoplastic resin of the present invention excels in transparency, heat resistance, and mechanical strength. | 09-03-2009 |
20090269601 | Norbornene Compound Addition Polymer, Process for Producing the Same, Molded Article Comprised of the Polymer, and Use Thereof - [PROBLEMS] To provide: a norbornene compound addition polymer which has excellent heat resistance and suffers no decrease in the excellent transparency and mechanical properties even when exposed to high temperatures during molding, processing, or use; and a process for producing the polymer. | 10-29-2009 |
20090275719 | Film Comprising Norbornene Compound Addition Polymer - [Problems] To provide a film comprising a norbornene (NB) compound addition polymer that is excellent in chemical resistance, optical properties and the like, has a high Tg, a low water absorption ratio and a low linear expansion coefficient, and is soluble in an ordinary solvent. | 11-05-2009 |
20110098434 | ISOPRENE-BASED POLYMER CYCLIZED PRODUCT, ALICYCLIC POLYMER, AND OPTICAL RESIN - An isoprene-based polymer cyclized product obtained by cyclization of an isoprene-based polymer containing structural units expressed by the general formula (1) and having a ratio of content of the structural units to all repeating structural units of 60 mol % or more; an alicyclic polymer obtained by hydrogenation of 50% or more of the carbon-carbon double bonds of the isoprene-based polymer; and an optical resin comprising the isoprene-based polymer cyclized product and alicyclic polymer. | 04-28-2011 |
20120289646 | RING-OPENING POLYMER OF CYCLOPENTENE AND METHOD OF PRODUCTION OF SAME - There is provided a ring-opening polymer of cyclopentene wherein a cis ratio of the cyclopentene-derived structural units is 30% or more, a weight average molecular weight (Mw) is 100,000 to 1,000,000, and a functional group containing a structure represented by the general formula (1) or (2) is included at an end of the polymer chain. | 11-15-2012 |
20120296035 | RING-OPENING POLYMER OF CYCLOPENTENE AND METHOD OF PRODUCTION OF SAME - There is provided a ring-opening polymer of cyclopentene wherein a cis ratio of cyclopentene-derived structural units is 30% or more, the weight average molecular weight (Mw) is 100,000 to 1,000,000, and an oxysilyl group is included at an end of the polymer chain. For example, the ring-opening polymer of cyclopentene can be obtained by ring opening polymerization of cyclopentene in the presence of a compound of a transition metal belonging to Group 6 in the Periodic Table, an organoaluminum compound represented by the following general formula (1), and an olefinically unsaturated hydrocarbon containing an oxysilyl group. | 11-22-2012 |
20130281615 | CYCLOPENTENE RING-OPENING POLYMER AND METHOD OF PRODUCTION OF SAME - A cyclopentene ring-opening polymer which has hydroxy groups at the polymer chain terminal ends is produced, then the hydroxy groups of the cyclopentene ring-opening polymer and isocyanate groups of a compound containing alkoxysilyl groups and isocyanate groups in its molecule are made to react to thereby produce a cyclopentene ring-opening polymer which contains structures at the polymer chain terminal ends where the polymer chains and groups including alkoxysilyl groups are bonded through urethane bond groups and which has a weight average molecular weight of 100,000 to 1,000,000. | 10-24-2013 |
20140005338 | POLYMERIZABLE COMPOSITION, RESIN SHAPED ARTICLE, AND LAMINATE | 01-02-2014 |
20140012012 | POLYETHER COMPOUND AND ELECTROLYTE COMPOSITION - A polyether compound containing oxirane monomer units in an average number per molecule of | 01-09-2014 |