Powder mixture comprising 20-80 wt % of one or more powdered organic peroxides selected from the group consisting of dibenzoyl peroxide and substituted dibenzoyl peroxides, 20-80 wt % of a powdered filler material, at least 60 wt %, thereof consisting of a solid inorganic flame retardant, and 0-20 wt % water.

Powder mixture comprising 20-80 wt % of one or more powdered organic peroxides selected from the group consisting of dibenzoyl peroxide and substituted dibenzoyl peroxides, 20-80 wt % of a powdered filler material, at least 60 wt %, thereof consisting of a solid inorganic flame retardant, and 0-20 wt % water.

Process for the production of a diacyl peroxide involving the reaction of an anhydride with hydrogen peroxide, removal of the formed carboxylic acid, production of an anhydride from said carboxylic acid, and recycling of the anhydride within the process.

Process for the production of a diacyl peroxide involving the reaction of an anhydride with hydrogen peroxide, removal of the formed carboxylic acid, production of an anhydride from said carboxylic acid, and recycling of the anhydride within the process.

To provide a method for producing a perfluoroacyl peroxide which can suppress formation of solid matters in a reaction apparatus, and a method for producing a fluoroalkyl iodide.

The method for producing a perfluoroacyl peroxide of the present invention is a method for producing a perfluoroacyl peroxide, which comprises: mixing an organic solvent solution containing a perfluoroacyl halide and an organic solvent which is at least one perfluoroalkyl iodide selected from the group consisting of C.sub.2F.sub.5I, C.sub.4F.sub.9I and C.sub.6F.sub.13I, a first aqueous solution containing hydrogen peroxide, and a second aqueous solution containing a basic alkali metal compound, to obtain a mixed liquid, and reacting the perfluoroacyl halide and the hydrogen peroxide in the mixed liquid to produce a perfluoroacyl peroxide, wherein the pH of the aqueous phase of the mixed liquid is adjusted to be from 7 to 14.

To provide a method for producing a perfluoroacyl peroxide which can suppress formation of solid matters in a reaction apparatus, and a method for producing a fluoroalkyl iodide.

The method for producing a perfluoroacyl peroxide of the present invention is a method for producing a perfluoroacyl peroxide, which comprises: mixing an organic solvent solution containing a perfluoroacyl halide and an organic solvent which is at least one perfluoroalkyl iodide selected from the group consisting of C.sub.2F.sub.5I, C.sub.4F.sub.9I and C.sub.6F.sub.13I, a first aqueous solution containing hydrogen peroxide, and a second aqueous solution containing a basic alkali metal compound, to obtain a mixed liquid, and reacting the perfluoroacyl halide and the hydrogen peroxide in the mixed liquid to produce a perfluoroacyl peroxide, wherein the pH of the aqueous phase of the mixed liquid is adjusted to be from 7 to 14.

Process for preparing a powdery organic peroxide formulation, said process comprises the following steps: a) preparing a reaction mixture comprising: 40-80 wt % water 10-25 wt % of an acid chloride or chloroformate, 1-4 wt % hydrogen peroxide, 2-8 wt % alkali metal hydroxide, 1-25 wt % of a phlegmatizer selected from the group consisting of ethylene glycol dibenzoate, phenyl benzoate, trimethylol propane tribenzoate, glyceryl tribenzoate, ethylene glycol ditoluate, 1,3-propanediol ditoluate, ethylene glycol 4-tert-butylbenzoate, ethylene glycol monobenzoate monotoluate, 2,3-butanediol dibenzoate, 4-methylphenyl benzoate acid ester, trimethylolpropane dibenzoate, and combinations thereof 0.002-0.20 wt % of a surfactant, and 0.25-5.0 wt % of an inert organic solvent, all percentages based on the weight of the reaction mixture, b) heating the reaction mixture at a temperature in the range 5-50° C.

Process for preparing a powdery organic peroxide formulation, said process comprises the following steps: a) preparing a reaction mixture comprising: 40-80 wt % water 10-25 wt % of an acid chloride or chloroformate, 1-4 wt % hydrogen peroxide, 2-8 wt % alkali metal hydroxide, 1-25 wt % of a phlegmatizer selected from the group consisting of ethylene glycol dibenzoate, phenyl benzoate, trimethylol propane tribenzoate, glyceryl tribenzoate, ethylene glycol ditoluate, 1,3-propanediol ditoluate, ethylene glycol 4-tert-butylbenzoate, ethylene glycol monobenzoate monotoluate, 2,3-butanediol dibenzoate, 4-methylphenyl benzoate acid ester, trimethylolpropane dibenzoate, and combinations thereof 0.002-0.20 wt % of a surfactant, and 0.25-5.0 wt % of an inert organic solvent, all percentages based on the weight of the reaction mixture, b) heating the reaction mixture at a temperature in the range 5-50° C.

An online continuous flow production process for directly preparing organic peroxides by using hydrogen peroxide as a raw material. This production process uses hydrogen peroxide, catalyst, and an oxidation substrate as a raw material. Substrate will be turned to designated peroxides sequentially through oxidation and workup. This process is performed in a plug-and-produce integrated continuous flow reactor, and the raw materials are continuously fed to the reactor. So, specified peroxide can be continuously obtained at the outlet of the plug-and-produce integrated continuous flow reactor.

An online continuous flow production process for directly preparing organic peroxides by using hydrogen peroxide as a raw material. This production process uses hydrogen peroxide, catalyst, and an oxidation substrate as a raw material. Substrate will be turned to designated peroxides sequentially through oxidation and workup. This process is performed in a plug-and-produce integrated continuous flow reactor, and the raw materials are continuously fed to the reactor. So, specified peroxide can be continuously obtained at the outlet of the plug-and-produce integrated continuous flow reactor.