Nippon Kayaku Kabushiki Kaisha

Masanobu Ogawa

Toshitake Kojima

Mutsumi Matsumoto

Shigeo Takenaka

Keiko Nakano

Hitoshi Shimizu

Yasuji Kido

Tatsutoshi Shimabara

A preserving agent for fresh marine product comprising (A) at least one salt selected from the group consisting of chlorates, chlorites and hypochlorites; (B) iron powder; and (C) at least one oxide selected from the group consisting of ferric oxide, cobalt oxide, nickel oxide, zinc oxide, titanium oxide, zirconium oxide, germanium oxide, copper oxide, silver oxide and manganese oxide and a method of preserving fresh marine products using the preserving agent;

Method for preserving fresh marine products with use of a deoxidant

Preserving agent, method and container for preserving fresh marine

Disclosed herein is an ethylene removal agent, a postharvest preservation agent to keep freshness of vegetables, fruits and flowers, and a deodorant comprising (A) at least one compound selected from the group consisting of phosphoric acid, phosphorous acid, hypophosphorous acid, hypochlorous acid and salts of these acids, and (B) specified metal(s) or compound(s) of metal.

Ethylene removal agent, postharvest preservation agent and deodorant

A catalyst comprising (1) palladium, (2) phosphorus, (3) antimony, (4) X and (5) oxygen wherein X denotes at least one element selected from the group consisting of potassium, sodium, rubidium, lithium, cerium, beryllium, magnesium, calcium, vanadium, strontium, zinc, thorium and rhenium. There is also provided a process for the manufacture of methacrylic or acrylic acid by oxidizing methacrolein or acrolein with molecular oxygen in the vapor phase in the presence of the catalyst defined above.

Process for the manufacture of methacrylic or acrylic acid

Methacrolein or acrolein is oxidized with molecular oxygen in the presence of water vapor, a catalyst containing palladium, phosphorus, antimony(optionally) and oxygen and a phosphoric acid or a compound capable of forming phosphoric acid during the reaction.

Catalyst for the manufacture of methacrylic or acrylic acid

Methacrylic acid and its ester or acrylic acid and its ester are prepared at the same time by reacting methacrolein or acrolein with an aliphatic alcohol and molecular oxygen in vapor phase in the presence of a Pd-- P--P-- O or Pd-- P-- Sb-- O catalyst.

Simultaneous production of methacrylic acid and a methacrylate or

A catalyst for the oxidation of methacrolein into methylacrylic acid in the presence of steam having the composition:

Method of manufacturing methacrylic acid and an oxidation catalyst

The present invention relates to a process for preparing acrylic acid by oxidizing acrolein and to an oxidation catalyst. More particularly, the present invention relates to a catalyst and a process for preparing acrylic acid by oxidizing acrolein or a mixed acrolein gas obtained by vapor phase oxidation of propylene with molecular oxygen in the presence of an oxidation catalyst of the empirical formula:

Process for preparing acrylic acid and oxidation catalyst

The preparation of an oxidation catalyst is described, represented by the following general formula:

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Gunma, Japan

Masanobu Ogawa