Dia-Nitrix Co., Ltd. Patent applications |
Patent application number | Title | Published |
20130059349 | METHOD FOR PRODUCING ACRYLAMIDE USING MICROBIAL CATALYST - The present invention provides a more efficient method for producing acrylamide from acrylonitrile by the action of a microbially-derived enzyme, nitrile hydratase. More specifically, the present invention provides a method for producing acrylamide from acrylonitrile using a biocatalyst having nitrile hydratase, which comprises the step of keeping acrylonitrile while cooling to less than 30° C. Moreover, the present invention also provides an apparatus for producing acrylamide from acrylonitrile using a biocatalyst having nitrile hydratase. | 03-07-2013 |
20120276601 | METHOD FOR PRODUCING ACRYLAMIDE USING MICROBIAL CATALYST - A method for producing acrylamide from acrylonitrile by a biocatalyst method, wherein both evaporation of acrylonitrile into a gas phase and damaging of a catalyst by stirring are prevented, is provided. In the present invention, the production of acrylamide from acrylonitrile by the biocatalyst method comprises feeding acrylonitrile into an aqueous medium comprising a microbial catalyst. | 11-01-2012 |
20120196744 | PROCESS FOR PRODUCING COMPOSITE OXIDE CATALYST - A process for producing a composite oxide catalyst which includes a step of preparing an aqueous slurry containing at least iron and antimony and composed of a liquid phase and a solid phase, a step of drying the aqueous slurry to obtain a dried material, and a step of calcining the obtained dried material, wherein of the precipitated particles having a particle size of not less than 1 μm but less than 150 μm contained within the aqueous slurry, the proportion of precipitated particles having a particle size of not less than 1 μm but less than 10 μm is within a range from 40 to 90% by volume, and the proportion of precipitated particles having a particle size of not less than 10 μm but less than 150 μm is within a range from 10 to 60% by volume. | 08-02-2012 |
20110021819 | PROCESS FOR PRODUCTION OF AMIDE COMPOUNDS - The present invention provides a method for producing an amide compound from a nitrile compound using a biocatalyst that realizes low cost, energy saving and low environmental burdens. The production method of the amide compound of the present invention is a method for producing an amide compound from a nitrile compound using a biocatalyst in a reactor, wherein the nitrile compound is reacted with the biocatalyst to produce the amide compound under such stirring conditions that the stirring power requirement is in the range of 0.08 to 0.7 kW/m | 01-27-2011 |
20110006258 | METHOD FOR STABILIZATION OF AQUEOUS ACRYLAMIDE SOLUTION - The present invention provides a method for conveniently stabilizing an aqueous acrylamide solution using a stabilizer which can be separated and removed easily. In the method for stabilizing an aqueous acrylamide solution according to the present invention, a microbial cell is added to the aqueous acrylamide solution at a dried cell weight concentration of 1 to 14000 mg/L. | 01-13-2011 |
20100032379 | METHOD FOR TREATMENT OF SLUDGE OR WASTEWATER - A method of treating sludge or wastewater involving the following steps: a swelling step which prepares a swelling liquid by adding a powdery polymer flocculant to water; a dissolution step which obtains an aqueous flocculant solution by supplying the swelling liquid to a filtration component and passing a filtering area of the filtration component; a flocculation treatment step which adds the aqueous flocculant solution to sludge or wastewater, wherein the total processing time from the time point where the powdery polymer flocculant was added to water until just before adding to sludge or wastewater to the aqueous flocculant solution is less than 3 hours. | 02-11-2010 |
20090270648 | FLUIDIZED BED CATALYST FOR PRODUCING ACRYLONITRILE AND PROCESS FOR PRODUCING ACRYLONITRILE - A fluidized bed catalyst for producing acrylonitrile capable of maintaining a high yield of acrylonitrile over a long time, and a process for producing acrylonitrile using the catalyst are provided. A fluidized bed catalyst for producing acrylonitrile having a composition represented by a following general formula: | 10-29-2009 |
20090221843 | CATALYST FOR PRODUCING ACRYLONITRILE AND PROCESS FOR PRODUCING ACRYLONITRILE - A catalyst for producing acrylonitrile capable of maintaining a high yield of acrylonitrile for a long time is provided. The catalyst has a composition represented by Mo | 09-03-2009 |
20090065443 | WATER TREATMENT METHOD - A water treatment method according to the present invention comprises adding an amphoteric polymer flocculant to polluted water to flocculate suspended solids so that the polluted water becomes treated water, and filtering the treated water. An inorganic flocculent can be added to the treated water after flocculation treatment before filtering the treated water. | 03-12-2009 |