Abstract:
A conventional liquid crystal display comprises a number of components, so that a manufacturing cost cannot be reduced. Furthermore, a large-area substrate has problems in shipping. According to this invention, a liquid-crystal panel is prepared by forming individual optically functional films, a TFT device and a light-emitting device on a long thin film and then laminating the film by a transfer process. A base film to be a substrate in a liquid-crystal panel preferably has a thickness of 10 µm to 200 µm, a curvature radius of 40 mm or less as a measure of flexibility and a coefficient of thermal expansion of 50 ppm/°C or , less. Furthermore, it more preferably gives a variation of ±5 % or less in mechanical and optical properties to a thermal history at 200 °C.
Abstract:
A cycloolefin having a specific polar group is polymerized by addition polymerization in a hydrocarbon solvent with the aid of a polymerization catalyst ingredient comprising (i) a specific transition metal compound, (ii) a Lewis acid compound, and (iii) an alkylaluminoxane to obtain a cycloolefin addition polymer. Alternatively, a cycloolefin is polymerized by addition polymerization in the hydrocarbon solvent with the aid of the polymerization catalyst ingredient in the presence of a molecular weight regulator comprising at least one aromatic vinyl compound or at least one cyclic unconjugated polyene compound or both to thereby obtain a cycloolefin addition polymer.
Abstract:
A conventional liquid crystal display includes many components to thereby make it difficult to reduce production costs. In addition, a large-area substrate poses transportation problems. A liquid crystal panel is produced by forming respective optical function film/TFT element and light emitting element on a long thin-film-form film of organic resin and laminating the films by transferring. A base film serving as the substrate of a liquid crystal panel preferably has a thickness of 10 to 200 μm, a flexibility with a radius of curvature of up to 40 mm, and a thermal expansion coefficient of up to 50 ppm/°C. In addition, it more preferably undergoes mechanical and optical characteristics changes of up to ±5 % after a heat history of at least 200 °C.
Abstract:
The present invention provides a cyclic olefin addition copolymer which has a reactive silyl group having a specific structure, excels in optical transparency, heat resistance, and adhesion, and is capable of producing a crosslinked product having improved dimensional stability, solvent resistance, and chemical resistance. The present invention also provides a process for producing the cyclic olefin addition copolymer, a crosslinking composition, a crosslinked product and a process for producing the same, and an optically transparent material (transparent resin film) comprising the cyclic olefin addition copolymer. The optically transparent material excels in optical transparency and heat resistance, exhibits improved dimensional stability, adhesion, solvent resistance, and chemical resistance, and is capable of improving fragility and preventing occurrence of cracks in the film.
Abstract:
Disclosed herein are an olefin copolymer having a functional group, which comprises a structural unit (a) derived from ethylene, a structural unit (b) derived from an alpha -olefin having 3 to 12 carbon atoms, and a structural unit (c) represented by the following general formula (1), and has an intrinsic viscosity Ä eta Ü of 0.1 to 10 dl/g as measured in decalin at 135 DEG C, a production process thereof and a rubber composition containing the copolymer ; wherein X and X mean, independently of each other, a hydrogen atom, a hydrocarbon group or the following specific functional group, at least one of X and X is the specific functional group, R and R denote, independently of each other, a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms, one of R and R , which is bonded to a carbon atom to which the specific functional group is bonded, is the hydrocarbon group having 1 to 10 carbon atoms, and n stands for an integer of 0 to 2; Specific functional group: a functional group selected from the group consisting of a hydroxyl group, a hydrocarbon group to which a hydroxyl group is bonded, a carboxyl group, a hydrocarbon group to which a carboxyl group is bonded, a primary or secondary amino group, a hydrocarbon group to which a primary or secondary amino group is bonded, a quaternary ammonium salt of a primary or secondary amino group and a hydrocarbon group to which a primary or secondary amino group is bonded, an amide group having at least one active hydrogen atom bonded to a nitrogen atom, a hydrocarbon group to which such an amide group is bonded, and an imide group composed of X and X and represented by -CO-NH-CO-.
Abstract:
A cyclic olefin having a specific polar group is polymerized by addition polymerization in a hydrocarbon solvent, using a polymerization catalyst component containing (i) a specific transition metal compound, (ii) a Lewis acid compound and (iii) an alkyl aluminoxane, or the cyclic olefin is polymerized by addition polymerization in the hydrocarbon solvent, using the polymerization catalyst component, by further adding at least one aromatic vinyl compound and at least one cyclic nonconjugated polyene compound, or either one of them as a molecular weight modifier, thereby obtaining a cyclic olefinic addition polymer.
Abstract:
Disclosed herein are a ring-opened cycloolefin copolymer excellent in optical properties such as transparency, low in water (moisture) absorption property, high in affinity for other materials, good in post processing properties such as adhesive property and printability, and excellent in heat resistance and mechanical strength, a production process thereof, and an optical material. The ring-opened cycloolefin copolymer of the invention contains a structural unit (A) represented by any one of general formulae (1-1) to (1-3) and a structural unit (B) derived from a specific cycloolefin having an ester group in a proportion of 10:90 to 50:50 in terms of a molar ratio, wherein a monomer for obtaining the structural unit (A) is a tricyclomonoolefin compound containing an endo form in a proportion of at least 80 mol% and has a glass transition temperature of 120 to 250 DEG C: wherein in the general formulae (1-1) to (1-3), R to R individually represent a group selected from a hydrogen atom, halogen atoms, and alkyl groups and halogenated alkyl groups having 1 to 4 carbon atoms, and X to X mean individually an ethylene group or vinylene group.
Abstract:
The present invention provides a cyclic olefin addition copolymer which has a reactive silyl group having a specific structure, excels in optical transparency, heat resistance, and adhesion, and is capable of producing a crosslinked product having improved dimensional stability, solvent resistance, and chemical resistance. The present invention also provides a process for producing the cyclic olefin addition copolymer, a crosslinking composition, a crosslinked product and a process for producing the same, and an optically transparent material (transparent resin film) comprising the cyclic olefin addition copolymer. The optically transparent material excels in optical transparency and heat resistance, exhibits improved dimensional stability, adhesion, solvent resistance, and chemical resistance, and is capable of improving fragility and preventing occurrence of cracks in the film.
Abstract:
A cycloolefin copolymer formed by ring-opening polymerization which is excellent in optical properties including transparency, is reduced in water (moisture) absorption, has high affinity for other materials, has satisfactory suitability for bonding, printing, and other processings after molding, and is excellent in heat resistance and mechanical strength. The cycloolefin copolymer formed by ring-opening polymerization comprises structural units (A) represented by the general formulae (1-1) to (1-3) and structural units (B) derived from a specific cycloolefin having an ester group, in a proportion of from 10/90 to 50/50 by mole. The monomers for obtaining the structural units (A) are tricyclomonoolefin compounds at least 80 mol% of which are accounted for by one or more endo compounds. The copolymer has a glass transition temperature of 120 to 250°C. General formula (1-1) General formula (1-2) General formula (1-3) [In the general formulae (1-1) to (1-3), R1 to R13 each represents hydrogen, halogeno, or a group selected among C1-4 alkyls and halogenated alkyls; and X1 to X3 each represents ethylene or vinylene.]