Sony Corporation

Mitsubishi Chemical Corporation

Nippon Zeon Company, Ltd.

Sony Corpotation

Fujikura Kasei Co., Ltd.

Miyuki Kuromiya

Haruo Watanabe

Yasuhito Inagaki

Tsutomu Noguchi

Kenji Shinozaki

Hideki Hirano

Huy Sam

Hidemi Tomita

Atsushi Ito

Teiji Kohara

Seiichi Yamamoto

Yukichi Murata

Mio Ishida

Hiroshi Takino

Masayoshi Oshima

Yoshinori Nakamura

Masataka Mizoguchi

A method of manufacturing a polyelectrolyte having the step of sulfonating polystyrene resin in a state where the polystyrene resin has been dissolved or dispersed in solvent composed of alicyclic compounds.

Composition of ionic substituted polystyrene and stabilizer(s)

Method of manufacturing polyelectrolyte

Method of manufacturing polyelectrolyte from styrene polymers

A polymer electrolyte which contains an inorganic pigment, having a sulfonated polystyrene resin as a principal ingredient, and is soluble to water.

Method for treating waste water with a polymer aggregating agent

Method of separating flame retardant from plastic composition

Polymer electrolyte, a polymer aggregating agent prepared therefrom, and a disposal of waste water

Polymer electrolyte, a polymer aggregating agent prepared therefrom, and

The present invention provides a recording solution for vaporization type heat transfer recording which produces no precipitate in a recording operation and thus no problem of burning in a vaporization portion. The recording solution for vaporization type heat transfer recording in which the recording solution is vaporized to be transferred to a recording material contains a dye, a solvent having a melting point of 0.degree. C. or less, and a compatibilier for increasing the solubility of the dye in the solvent. Particularly, when the temperature at which the weight loss by vaporization is 10% in thermogravimetric analysis at a rate of temperature rise of 20 C./min., is defined as the vaporization start temperature, the different between the vaporization start temperatures of any desired two of the dye, the solvent and the compatibilizer is set to 100.degree. C. or less.

Recording solution for vaporization type heat transfer recording

A thermal transfer recording material for use in a recording apparatus in which the thermal transfer recording material is introduced into a transfer section having a porous structure by an effect of capillarity, subjected to a state transformation by heating, and then transferred to a recording medium disposed in an opposed relation to the transfer section, comprising:

Thermal transfer recording material and thermal transfer recording

A printing paper for use in sublimation-type thermal transfer recording includes a sheet-like base and a dye receiving layer disposed thereon. The dye receiving layer is composed of a copolymer of substituted or unsubstituted phenoxypolyethylene glycol acrylate or substituted or unsubstituted phenoxypolyethylene glycol methacrylate and another monomer. The substituted or unsubstituted phenoxypolyethylene glycol acrylate or the substituted or unsubstituted phenoxypolyethylene glycol methacrylate is of a proportion of at least 50 weight % of the copolymer.

Printing paper for thermal transfer

Disclosed is Printing paper which incorporates a sheet substrate and a dye-receiving layer wherein the dye-receiving layer contains a vinylphenolic resin and a dyeable resin or contains a polymer of a vinylphenolic resin, a butyral resin and a poly-functional isocyanate. The printing paper is used in thermal sublimation transfer recording and gives an image with improved storing characteristics in terms of the light resistance, dark fading resistance, sebum resistance, plasticizer resistance, etc.

Printing paper

Using a thermoplastic norbornene type plastic as a material for the magnetic disc substrate, a magnetic disc substrate having a small deformation and a high modulus of elasticity is prepared. By optimizing the thickness of the substrate, the resonance frequency of the magnetic disc can be elevated to a level higher than the servo band. As a result, a magnetic disc substrate can form a servo mark having a high positional precision, and can carry out tracking with high precision.

Magnetic disc substrate and a magnetic disc using the same

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Kanagawa, Japan

Miyuki Kuromiya