Matsui Shikiso Chemical Co., Ltd.

Bridgestone Corporation

Sanrio Company, Ltd.

Matui Shikiso Chemical Co., Ltd.

Goro Shimizu

Yoshimi Hayashi

Masayasu Kamada

Yosuke Kitagawa

Tadashi Kobayashi

Hajime Hasegawa

Taiji Koga

Toshihisa Maeda

Atsuo Takei

Tohru Okuyama

Hideo Torigoe

A process for producing a liner material characterized by dipping a core in the form of a monofilament or multifilament into a vinyl chloride resin sol composition having a thermochromic particulate material incorporated therein, the thermochromic particulate material being prepared by enclosing with the high polymer compound an electron-donating chromogenic substance, an electron-accepting substance for the chromogenic substance and a solvent having a boiling point of at least 150.degree. C. and selected from the group consisting of alcohols, amides, esters and azomethines and further covering the resulting product with a different high polymer compound; withdrawing the core from the sol composition; and heating the core to gel the sol composition and cover the core with the gelled composition.

Process for producing linear material

Disclosed is a thermochromic color masterbatch for use in a thermoplastic resin comprising a wax having substantially homogeneously dispersed therein a thermochromic granular material which is coated with a hydrophilic high-molecular weight substance, said thermochromic granular material being a mixture of a thermochromic composition comprising an electron-donating chromogen, an electron acceptor and a solvent with a thermosetting resin.

Thermochromic color masterbatch

Thermochromic particle-containing linear material product produced by the process characterized by dipping a core in the form of a monofilament or multifilament into a vinyl chloride resin sol composition having a thermochromic particulate material incorporated therein, the thermochromic particulate material being prepared by enclosing with a high polymer compound an electron-donating chromogenic substance, an electron-accepting substance for the chromogenic substance and a solvent having a boiling point of at least 150.degree. C. and selected from the group consisting of alcohols, amides, esters and azomethines and further covering the resulting product with a different high polymer compound; withdrawing the core from the sol composition; and heating the core to gel the sol composition and cover the core with the gelled composition.

Thermochromic particle containing linear material

A process for preparing a molded product of thermochromic polyvinyl chloride characterized by incorporating a thermochromic particulate material into a vinyl chloride plastisol comprising a vinyl chloride resin, plasticizer, stabilizer, lubricant and filler, and molding the resulting mixture. The thermochromic particulate material is prepared from particles of a non-thermoplastic resin having encapusated therein the three components of electron-donating chromogenic substance, electron-accepting substance and solvent by coating the particles with a hydrophilic high-molecular-weight compound.

Process for preparing molded product of thermochromic polyvinyl chloride

A thermochromic composition comprising (1) an electron-donating chromogenic material, (2) a 1,2,3-triazole compound, (3) a weakly basic, sparingly soluble azomethine or carboxylic acid primary amine salt, and (4) an alcohol, amide or ester serving as a solvent.

Thermochromic composition

A thermochromatic polyurethane foam comprising a polyol and a polyisocyanate as main components, and a thermochromic composition serving as a coloring agent and added to the main components singly or conjointly with a usual dye or pigment. The thermochromic composition comprises an electron-donating chromogenic material, an acidic substance and a solvent.

Thermochromic polyurethane foam

A method characterized by entirely or partially coating a shaped material of synthetic resin or fibers with an adhesive having incorporated therein a thermally color-changeable particulate material which comprises three components enclosed or encapsulated in a high-molecular-weight compound, the three components being an electron donating chromogenic substance, an electron accepting substance corresponding to the chromogenic substance and a solvent having a boiling point of at least 150.degree. C. and selected from among alcohols, amides, esters and azomethines; and electrostatically flocking the adhesive layer with colored or colorless short fibers. The treated material is useful for making stuffed toys or dolls.

Growing community of inventors

Ohtsu, Japan

Goro Shimizu