An ink-jet recording medium having a support and, provided thereon, at least one ink receiving layer containing polymeric organic particles, characterized in that said polymeric organic particles have a glass transition temperature of 40 °C or higher, and are amphoteric polymeric organic particles having both functional groups of cationic groups and anionic groups. The ink-jet recording medium is excellent in ink absorbing property, coloring concentration, gloss, and the resistance to water, light and yellowing, in particular, excellent in ink absorbing property, coloring concentration, gloss, and the resistance to light and yellowing.

Ink-jet recording medium

A thermal recording material comprising a support and, sequentially superimposed thereon, an undercoating layer, which contains a pigment and a binder as main components, and a thermal recording layer, which contains an achromatic or hypochromic basic colorless dye and a developer capable of reacting with the basic colorless dye to thereby realize color formation as main components, wherein the undercoating layer comprises a carboxymethylcellulose exhibiting an etherification degree of 0.55 to 0.75. Causing the undercoating layer to further contain hydroxymethylcellulose is preferred from the viewpoint of high effectiveness.

Thermal recording material

An ink-jet recording material comprising an ink receiving layer (A) present near a supporting material which comprises precipitation method silica particles having an average secondary particle diameter of 500 nm or less, or precipitation method silica particles having an average secondary particle diameter of 500 nm or less and gas phase method silica particles having an average secondary particle diameter of 500 nm or less, and further comprises poly(vinyl alcohol) in an amount of less than 20 parts by weight relative to 100 parts by weight of the total silica particles in the ink receiving layer (A), and an ink receiving layer (B) being apart form the supporting material which comprises at least one type of particles selected from among those of a gas phase method silica, alumina and an alumina hydrate and poly(vinyl alcohol) in an amount of less than 25 parts by weight relative to 100 parts by weight of the at least one type of particles.

Ink-jet recording material

A subject for the invention is to improve the cycle characteristics of a high-capacity secondary battery containing an active material packed at a high density, by using a particulate active material having a low aspect ratio. The invention relates to a nonaqueous-electrolyte secondary battery comprising a negative electrode and a positive electrode each capable of occluding/releasing lithium, a separator, and a nonaqueous electrolyte solution comprising a nonaqueous solvent and a lithium salt, characterized in that the separator comprises a porous film made of a thermoplastic resin containing an inorganic filler, and at least either of the following is satisfied: the active material contained in the negative electrode is a particulate active material having an aspect ratio of from 1.02 to 3; and the active material contained in the positive electrode is a particulate active material having an aspect ratio of from 1.02 to 2.2.

Nonaqueous electrolyte secondary battery

An engine exhaust system and method of controlling hydrocarbon emissions are provided. The system and method are based on the use of two catalytic converter chambers, a first chamber containing a catalytic material and a second chamber containing catalyst as well as molecular sieves capable of adsorbing hydrocarbons during engine start-up and of having hydrocarbons desorbed therefrom when the catalysts reach an effective converting temperature. According to the invention, engine exhaust is selectively conveyed to each of the two converters in a manner such that initially produced hydrocarbon is withheld in the system by the molecular sieves in order to be recycled through the converters and brought into contact with the catalyst after an effective converting temperature has been attained.

Dual converter engine exhaust system for reducing hydrocarbon emissions

PROBLEM TO BE SOLVED: To provide an aqueous emulsion excellent in freeze-thaw stability, water resistance, and also in shelf stability at a low temperature, and an adhesive using the aqueous emulsion SOLUTION: The aqueous emulsion comprises, as a dispersoid, a polymer having a vinyl ester monomer unit, and, as a dispersant, a composition comprising a vinyl alcohol-based polymer (A) containing at least 19 mol% of a 1,2-glycol bond and having a saponification degree of at least 70 mol%, and a vinyl alcohol-based polymer (B) bearing a functional group having an active hydrogen in the molecule, with the weight ratio (A)/(B) of 99/01 to 3/7 COPYRIGHT: (C)2005,JPO&NCIPI

Aqueous emulsion and adhesive

PROBLEM TO BE SOLVED: To provide a synthetic resin emulsion powder which is excellent in film strength and alkali resistance and contains no aldehyde, and its preparation method. SOLUTION: The synthetic resin emulsion powder is obtained by spray drying an aqueous emulsion. The aqueous emulsion comprises a (meth)acrylic resin emulsion comprising a vinyl alcohol polymer having a degree of saponification of 70 mol% as a dispersant and a polymer comprising at least one monomer unit chosen from an acrylate monomer unit and a methacrylate monomer unit as a dispersoid. The aqueous emulsion yields ≤0.5 wt.% filtration residue based on the weight of its solid content when tested in a Maron mechanical stability tester at 20°C, 1,000 rpm under a load of at most 0.5 kg/cm 2 for 10 min and subsequently filtered with a 60-mesh stainless wire mesh. COPYRIGHT: (C)2005,JPO&NCIPI

Synthetic resin emulsion powder and its preparation method

PURPOSE:To facilitate the production of a vinyl ester polymer or a vinyl alcohol polymer of a high degree of polymerization on an industrial scale. CONSTITUTION:A process for efficiently producing a vinyl ester polymer of a high degree of polymerization by seed-polymerizing a vinyl ester by using a vinyl ester polymer emulsion as a seed emulsion under conditions including a water-soluble initiator feeding amount of 1X10 -2X10 mol per liter of a reaction solution feeding volume and a water-soluble initiator feeding amount of 1X10 -1X10 mol per vinyl ester polymer particle in the seed emulsion, and a process of efficiently producing a vinyl alcohol polymer from the vinyl ester polymer.

Production of vinyl ester polymer and production of vinyl alcohol polymer

PROBLEM TO BE SOLVED: To produce a fluorescent screen of a color cathode-ray tube having sensitivity, peeling resistance and developability comparable to or higher than those of a screen using conventional PVA and capable of lowering baking temperature because of a lower heat reduction temperature than that of conventional PVA by several ten degrees. SOLUTION: A photosensitive solution formed from an aqueous solution containing a modified polyvinyl alcohol polymer having structural units A and/or B of formulae 1 and 2 (where R is a 1-3C alkyl) and having a polymerization degree of 100-5, 000 and 50-99.95 mol% saponification degree and a dichromate is applied to the surface of the face plate of a color cathode-ray tube and exposed to produce the objective fluorescent screen of the color cathode-ray tube.

Method for producing fluorescent screen of color cathode-ray tube

PROBLEM TO BE SOLVED: To provide a thermoplastic resin composition having excellent optical characteristic such as low haze, low birefringence and high light transmittance, also having combinedly high stiffness, high surface hardness and high toughness, and is excellent in continued productivity.SOLUTION: This thermoplastic resin composition includes: a methacrylic resin (A); and a polyvinyl acetal resin (B) obtained from polyvinyl alcohol resin with ≥500 viscocity-average degree of polymerization and having the content of alkali metal or alkaline earth metal of 100 ppm or less, in a mass ratio (A)/(B) of 99/1 to 82/18. The dumbbell testpiece obtained by injection molding of the composition has a haze value of 0.5% or less; and in-plane retardation value at 589 nm wavelength measured at a 2 mm thick part of the dumbbell testpiece obtained by injection molding of the composition is 20 nm or less.

Fujiwara Naoki

Papers

Aqueous emulsion and adhesive

Synthetic resin emulsion powder and its preparation method

Production of vinyl ester polymer and production of vinyl alcohol polymer

Method for producing fluorescent screen of color cathode-ray tube

Methacrylic thermoplastic resin composition