New Japan Chemical Co., Ltd.

Daicel Chemical Industries, Ltd.

Shikibo Ltd.

Kango Fujitani

Mikio Nakazawa

Yutaka Tsujimoto

Hiroyuki Miura

Yoshiaki Sakai

Yoko Fukuyama

Toshiaki Kobayashi

Hiroto Tanigawa

Koichi Okumura

Hiroshi Manami

Toshihiro Mizutani

Yoshihiro Kihara

Yoshihiro Ishibashi

Koichi Murai

Hidekazu Nakagawa

Motohiko Otani

Yoshitaka Uno

Kazuhisa Honda

Toshio Watanuki

By Kei Takeda, Heir

Koichi Murai, Deceased

By Kumi Fujimoto, Heir

Shinya Inoue

Masaya Uenoya

By Rumi Emori, Heir

Yutaka Hayashi

An object of the present invention is to provide a powder of high-purity 1,4-cyclohexanedicarboxylic acid with excellent powder flowability. The invention provides a powder of high-purity 1,4-cyclohexanedicarboxylic acid having particle size distributions (volume basis) such that Dis within a range of 5 to 55 &#x3bc;m, Dis within a range of 40 to 200 &#x3bc;m, and Dis within a range of 170 to 800 &#x3bc;m; and having an aerated bulk density of 0.4 to 0.8 g/cm, a packed bulk density of 0.5 to 1.0 g/cm, and a compressibility of 10 to 23%.

Powdery 1,4-cyclohexanedicarboxylic acid

An alicyclic unsaturated alcohol (for example, tetrahydrobenzyl alcohol) having the purity of 99% by weight or more, the water content of 0.1% by weight or less and the acid value of 0.1 mg KOH/g or less can be produced, with high selectivity, by hydrogenating using an unsaturated cyclic aldehyde having the acid value of 10 mg KOH/g or less as a raw material; terminating the hydrogenation in the conversion of 70 to 99.8%; and rectifying the reaction product containing the unreacted unsaturated cyclic aldehyde. The high purity alicyclic unsaturated alcohol is useful as raw material chemicals for synthesizing drugs, agricultural chemicals, perfumes, and dyes etc.

Process for producing an alicyclic unsaturated alcohol

Fibers, a process for preparing the same and product thereof

In treating a cellulose fiber article with 1,2,3,4-butanetetracarboxylic acid to improve properties, 1,2,3,4-butanetetracarboxylic acid containing up to 200 ppm of nitro radical is used, whereby the cellulose fiber article can be prevented from coloring to the utmost extent. The intended results of the invention can be achieved to a remarkable extent when using 1,2,3,4-butanetetracarboxylic acid containing up to 200 ppm of nitro radical and prepared by oxidizing tetrahydrophthalc acid and/or tetrahydrophthalic anhydride with hydrogen peroxide.

Formaldehyde-untreated cellulose fiber articles and process for

Thermoplastic resin composition and a method of molding the same

A yarn, cloth, woven fabric, knitted fabric or nonwoven fabric composed of natural cellulose fibers, each fiber having incorporated therein a water-insoluble inorganic metal compound, and each fiber having at least one cured polycarboxylic acid combined therewith, said polycarboxylic acid being one selected from the group consisting of polycarboxylic acids and partial salts thereof, and a process for preparing the same.

Articles of natural cellulose fibers with improved deodorant properties

Disclosed is a process for preparing a polycarboxylic acid, the process comprising subjecting a Diels-Alder reaction product of maleic anhydride and a diene and/or the corresponding acid to oxidative cleavage using hydrogen peroxide in the presence of at least one catalyst selected from the group consisting of tungstic acid, molybdic acid and heteropoly acids thereof.

Process for preparing polycarboxylic acid

This invention provides a process for preparing carboxylic acid, the process comprising subjecting an oxidation product produced by reacting a peroxide with (a) unsaturated aliphatic monocarboxylic acid having at least one unsaturated bond in the carbon chain and containing 6 to 24 carbon atoms or its ester or (b) cyclic and/or acyclic aliphatic olefin having at least one unsaturated bond in the carbon chain to oxidation by oxygen or oxygen-containing gas in the presence of a catalyst comprising (i) at least one heavy metal compound and (ii) at least one member selected from the group consisting of a bromine compound and a chlorine compound.

Process for preparing carboxylic acid

Process for preparing dibenzylidene sorbitols and dibenzylidene xylitols

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Uji, Japan

Kango Fujitani