An optical film is provided, which displays a positive wavelength dependency across the entire wavelength region from 400 to 800 nm, and is capable of imparting a specified retardation to transmitted light with a single sheet of film. The optical film particularly, includes a thermoplastic norbornene-based resin with a specified structure formed of a structural unit (I) which imparts a positive birefringence and a structural unit (II) which imparts a negative birefringence, and which satisfies particular conditions with respect to ΔNI(λ), ΔNII(λ), ΔNI(800) and ΔNII(800) wherein ΔNI(λ) and ΔNII(λ) represent the difference between a refractive index Nx(λ) in an x axis direction at a wavelength λ, and a refractive index Ny(λ) in a y axis direction, and ΔNI(800) and ΔNII(800) represent the difference in refractive indexes at a wavelength of 800 nm, and the x axis represents the stretching direction and the y axis represents the in-plane direction perpendicular to the x direction.

Thermoplastic norbornene resin based optical film

A backlight 7 has light sources 2, a flat-plate-shaped light guide plate 3 for guiding the light emitted from the light sources 2 in a predetermined direction, a light shield louver 5, disposed so as to face the light guide plate 3, for shielding part of the light emerging from the light guide plate 3 according to angles of incidence, and a prism sheet 8 for converting the brightness distribution of the light incident on the light shield louver 5 into a predetermined brightness distribution Owing to the prism sheet 8, the light incident on the light shield louver exhibits a brightness distribution such that brightness is at a minimum at an angle of incidence of 0° Thus, the backlight 7, and a liquid crystal display device 1 employing it, permits light to emerge therefrom within a desired range of viewing angles while offering high brightness within that range, with reduced degradation of viewability

Backlight and liquid crystal display device

An olefin ring-opening metathesis polymer is hydrogenated to obtain a hydrogenated product thereof in high yield. A specialized olefin ring-opening metathesis polymer is hydrogenated in the presence of hydrogen using a catalyst consisting of an amine compound and a metallic complex of an organic phosphorous compound represented by the general formula (1): MH k Q m T p Z q   (1) wherein k is an integer of 0 or 1, m is an integer of 1 to 3, p is an integer of 0 or 1, q is an integer of 2 to 4, M is ruthenium, rhodium, osmium, iridium, palladium, platinum or nickel atom, H is hydrogen atom, Q is a halogen atom, T is CO, NO, toluene, acetonitrile or tetrahydrofuran, Z is an organic phosphorous compound represented by the general formula (2): PR′ 1 R′ 2 R′ 3   (2) wherein P is phosphorous atom, R′ 1 , R′ 2 and R′ 3 may be the same or different from each other and are individually selected from the group consisting of a linear, branched or cyclic alkyl group, a linear, branched or cyclic alkenyl group, a linear, branched or cyclic aryl group, a linear, branched or cyclic alkoxy group and a linear, branched or cyclic aryloxy group.

Preparation of hydrogenated product of cyclic olefin ring-opening metathesis polymer

The present invention is to establish a process for production of highly durable organic silicon-based coatings with satisfactory adhesive property on polyolefin resins. A polyolefin resin, wherein after hydrophilic treatment of the surface of the polyolefin resin it is coated with a coating solution containing a silicon compound or its hydrolysate with an organic functional group represented by general formula (1): R 1 n Si(R 2 ) 4−n (where R 1 is an organic functional group with a methacryloxy group, R 2 is one or a plurality of hydrolyzable groups selected from among alkoxyl groups, acetoxyl groups and chlorine, and n is an integer of up to 3), and then dried to obtain a primary coating, over which a silicon dioxide coating is formed. Alternatively, the primary coating may be obtained by coating and drying a coating solution containing a plurality of different silicon compounds or their hydrolysates from among silicon compounds and their hydrolysates with an organic functional group represented by general formula (2): R 3 n Si(R 2 ) 4−n (where R 3 is an organic functional group with a functional group selected from among methacryloxy, vinyl, allyl and amino groups, R 2 is one or a plurality of hydrolyzable groups selected from among alkoxyl groups, acetoxyl groups and chlorine, and n is an integer of up to 3).

Silicon dioxide-coated polyolefin resin and process for its production

Methods of operating an electromagnet of an ion source for generating an ion beam with a controllable ion current density distribution. The methods may include generating plasma in a discharge space of the ion source, generating and shaping a magnetic field in the discharge space by applying a current to an electromagnet that is effective to define a plasma density distribution, extracting an ion beam from the plasma, measuring a distribution profile for the ion beam density, and comparing the actual distribution profile with a desired distribution profile for the ion beam density. Based upon the comparison, the current applied to the electromagnet may be adjusted either manually or automatically to modify the magnetic field in the discharge space and, thereby, alter the plasma density distribution.

Methods of operating an electromagnet of an ion source

PURPOSE:To prepare the title hydrogenated product having excellent heat resistance and mechanical characteristics and good balance among transparency, water resistance etc., and being usable in a wide range of application fields, by hydrogenating a part or the whole of olefinically unsatd. groups of a specified ring-opening polycyclic norbornene copolymer. CONSTITUTION:A ring-opening polycyclic norbornene copolymer having repeating units of formulas IV and V wherein at least 50% of bonds of formula III constituting the main chain are single bonds is prepd. by hydrogenating a part or the whole of olefinically unsatd. groups of a ring-opening polycyclic norbornene copolymer contg. 90-30mol.% repeating units of formula I or alkyl deriv. thereof and 10-70mol.% repeating units of formula II or alkyl deriv. thereof and having an intrinsic viscosity [eta] of 0.01-20dl/g as measured at 25 deg.C in toluene with hydrogen by using a hydrogenation catalyst. This hydrogenated product has excellent heat resistance, mechanical strengths, transparency and, resistance to water absorption and is usable in a wide range of application fields such as an optical field.

Hydrogenated product of ring-opening copolymer and preparation thereof

PURPOSE:To prepare a norbornene polymer contg. no gel and having a sharp MW distribution, excellent processability and usefulness as an optical material by polymerizing specific norbornene monomers in the presence of a linear olefin using a Ziegler type ring-opening polymn. catalyst. CONSTITUTION:100-50 pts.wt. norbornene monomer of the formula (wherein R1 and R2 are each H or alkyl; and m is 0-2) and 50wt.% or less other norbornene monomer copolymerizable by ring-opening polymn. with the former norbornene monomer (e.g., norbornene) are polymerized in the presence of pref. 10wt.% or less (based on the total amt. said two norbornene monomers) linear olefin (e.g., hexene-1) using a Ziegler type ring-opening polymn. catalyst comprising an organometal compd. contg. a metal of the group I-III of the periodic table (e.g., triethylaluminum), titanium tetrahalide, and an amine activator (e.g., triethylamine).

Norbornene polymer by ring opening polymerization and production thereof

PURPOSE:To prevent a sealed part from becoming imperfect even in a soldering operation by a method wherein a lead-wire at the sealed part is formed of a filler-added thermoplastic norbornane-based resin composition. CONSTITUTION:The main-body part of an electronic element composed of two parallel lead wires one end of which has been connected by a connection part is fixed to the central part of a metal mold, a thermoplastic norbornane-based resin is injection-molded, and an electronic-element sealed body is obtained. A sealed part at the sealed body is fixed to the metal mold, a filler-added thermoplastic norbornane-based resin composition is injection-molded thermoplastic norbornane-based resin composition is injection-molded, an injection- molded body is taken out, parts to which the two lead wires have been connected are cut off, and an electronic-element sealed body is obtained. In the sealed body, the sealed part at the sealed body is provided with a sealed part whose heights has been extended in a direction the lead wires are extended, and the two lead wires are extended vertically from the bottom face of the sealed part.

Electronic-element sealed body

PURPOSE:To obtain a high-mol-wt gel-free hydrogenation product of a norbornene ring opening polymn product having a sharp molwt distribution and a good processability, and suitable as the starting material of an optical material CONSTITUTION:100-50wt% norbornene monomer of the formula (wherein R1 and R2, which may be the same or different from each other, is a hydrogen atom or an alkyl group; and m is an integer of 0 to 2) and 0-50wt%, other norbornene monomer capable of ring opening copolymn therewith are subjected to ring opening polymn to prepare a solvent-soluble norbornene ring opening polymn product having a number-average molwt Mn of 10,000 to 50,000 and a ratio (Mw/Mn) of wt-average molwt Mw number-average molwt Mn of at most 3 Subsequently, this norbornene ring opening polymn product is hydrogenated in an org solvent in the presence of a hydrogenation catalyst

Preparation of hydrogenation product of norbornene ring opening polymerization product

PURPOSE:To obtain an integrated molded product excellent in the sealability of a material of a different kind using a thermoplastic resin excellent in moldability. CONSTITUTION:A crosslinkable compsn. (1) such as a thermosetting compsn., a photo-setting compsn. or an electron beam curable compsn. is applied to the contact scheduled part of a thermoplastic resin and crosslinked by the method corresponding to the compsn. to be cured or a soln. of a rubbery polymer (2) such as saturated polyolefinic rubber, alpha-olefin/diene rubber, a polystyrenic thermoplastic elastomer or a polyolefinic thermoplastic elastomer is applied to the contact scheduled surface to volatilize a solvent or the rubbery polymer is melted to be applied to the contact scheduled surface to be cooled to produce a material of a different kind having an intermediate layer formed thereto, for example, an electronics element such as a light emitting diode. This material is fixed to a mold and a thermoplastic resin such as polycarbonate, polymethyl methacrylate or a thermoplastic norbornene resin is subjected to injection molding and solidified to obtain an integrated molded product.

Natsuume Yoshio

Papers

Hydrogenated product of ring-opening copolymer and preparation thereof

Norbornene polymer by ring opening polymerization and production thereof

Electronic-element sealed body

Preparation of hydrogenation product of norbornene ring opening polymerization product

Molded product and production thereof