Rengo Co., Ltd.

Frontier Industrial Co., Ltd.

Hirokuni Tajima

Tomoyuki Nakatsubo

Junichi Kubo

Kenichi Ito

Hidenao Saito

Masao Fujita

Kiyoshi Kamei

Shozo Sasaki

Sadao Odajima

Tetsuro Yamate

Ge Li

Takahito Otani

Fumio Miyagoshi

Hiro Mi Fujita

Koichi Masakiyo

Hitoshi Kawakami

A material is provided which comprises cellulose fine fibers and which is capable of suitably acting on resin or rubber uniformly on a high level, and of generating superior action when added to a resin composition. As such a material, cellulose xanthate fine fibers are contained in a resin composition or a resin dispersion.

Resin composition containing cellulose xanthate fine fibers

Nanofiber that keep crystallinity are obtained from a cellulose material under light load. The nanofiber are obtained by treating a material containing cellulose with 4% by mass or more and 9% by mass or less of an aqueous alkali metal hydroxide solution to produce alkali cellulose, reacting the alkali cellulose with carbon disulfide to give cellulose xanthate, and defibrating the cellulose xanthate. Then, the xanthate is treated with acid or heat to be regenerated into cellulose nanofiber.

Cellulose xanthate nanofiber

A liquid containing a hydrophilic polymer is applied by spreading or impregnation to a porous sheet comprising paper or a nonwoven fabric containing not less than 30% by weight and not more than 100% by weight of hydrophilic fiber to provide a hydrophilic polymer-processed sheet of which the surface and/or the interior of the porous sheet is filled with the hydrophilic polymer, which is made insoluble to water. This sheet is used as a sheet for a total heat exchanger which has higher conductivity of sensible heat and latent heat than conventional sheet for a total heat exchanger that uses a moisture permeable membrane.

Sheet for total heat exchanger

A polyol polymer having a greater number of hydroxy groups, an aliphatic acid ester of a polyol polymer having a greater number of hydroxy groups, and an aliphatic ether of a polyol polymer having a greater number of hydroxy groups are provided. A polymer obtained by polymerizing a polyol containing meso-erythritol, and an aliphatic acid ester and an aliphatic ether of the polymer are provided.

Polyol polymers, meso-erythritol polymers and their aliphatic acid esters and aliphatic ethers

Growing community of inventors

Osaka, Japan

Hirokuni Tajima