Abstract:
A method is for producing propylene oxide, the method including the steps of: reacting hydrogen peroxide with propylene either in an acetonitrile solvent or in a mixture of solvents which include acetonitrile and water, in presence of a titanosilicate catalyst, whereby a reaction mixture containing propylene oxide is obtained; separating the reaction mixture obtained in the reacting into a gas and a reaction liquid; and distilling the reaction liquid obtained in the separating, whereby the reaction liquid is separated into a column top liquid containing propylene oxide, and a column bottom liquid including acetonitrile or a combination of acetonitrile and water, in combination with other steps. This enables industrially efficient production of propylene oxide with use of acetonitrile.
Abstract:
An emulsion comprising a dispersoid dispersed in water together with an emulsifier, wherein the dispersoid is an olefin copolymer containing a structural unit derived from ethylene, linear α-olefin, or ethylene and linear α-olefin, and a structural unit derived from the following vinyl compound (I), or an olefin copolymer modified material obtained by further graft-polymerizing unsaturated carboxylic acids to the olefin copolymer, and the volume-based median diameter of the dispersoid contained in the emulsion is 0.01 to 1 µm.
CH 2 =CH-R (I)
(wherein, R in the vinyl compound (I) represents a secondary alkyl group, tertiary alkyl group or alicyclic hydrocarbon group.).
Abstract:
The present invention provides an apparatus for producing an epoxy compound derived from an olefin by causing a reaction of hydrogen, oxygen, and the olefin in a liquid solvent in the presence of a catalyst in a reactor, wherein a vapor phase in the reactor contains an inert gas; hydrogen, an oxygen-containing gas with an oxygen concentration of at least 90% by volume, and the olefin are supplied to the vapor phase and/or liquid phase of the reactor to cause a reaction; and there exist a means for taking out the liquid phase containing the reaction product from the reactor.
Abstract:
A method is for producing propylene oxide, the method including the steps of: reacting hydrogen peroxide with propylene either in an acetonitrile solvent or in a mixture of solvents which include acetonitrile and water, in presence of a titanosilicate catalyst, whereby a reaction mixture containing propylene oxide is obtained; separating the reaction mixture obtained in the reacting into a gas and a reaction liquid; and distilling the reaction liquid obtained in the separating, whereby the reaction liquid is separated into a column top liquid containing propylene oxide, and a column bottom liquid including acetonitrile or a combination of acetonitrile and water, in combination with other steps. This enables industrially efficient production of propylene oxide with use of acetonitrile.