Abstract: The invention provides an improvement for the continuous preparation of lauroyl peroxide in the absence of organic solvents from crude lauroyl chloride, aqueous sodium hydroxide solution and hydrogen peroxide by continuously adding the reaction components to a reaction stirrer vessel and carrying out the reaction with an average residence time of 15 to 30 minutes, the improvement comprising maintaining the temperature in the raction vessel between 0.degree. and 20.degree. C. by cooling, adding 1.0 to 3% by weight of hydrogen peroxide, referred to the total amount of the reaction mixture, and sodium hydroxide in such amount that the concentration thereof in the reaction mixture run off is 0.15 to 0.30N, withdrawing the reaction mixture from the reaction vessel and heating the reaction mixture by the addition of water of a temperature of from 70.degree. to 90.degree. C., to above the melting point of lauroyl peroxide, and separating off the molten lauroyl peroxide in a separator.

Abstract: A process for the distillative separation of tertiary alkyl hydroperoxides of the formulaR--OOHwhereinR is a tertiary alkyl group with 4 to 6 carbon atoms from the corresponding di-tertiary alkyl peroxides resulting during their preparation, which process comprises neutralizing the reaction mixture resulting during the preparation of the tertiary alkyl hydroperoxide, subjecting same to vacuum distillation in the presence of water at a temperature of less than about 45.degree. C. and recovering the purified tertiary alkyl hydroperoxide as a bottoms product.

Abstract: The present invention provides a process for the continuous production of dialkylperoxydicarbonates of the general formula: ##STR1## in which R stands for the same or different, straight-chained, cyclic or branched alkyl radicals containing 6 to 18 carbon atoms, by the continuous reaction of a chloroformic acid ester of the general formula: ##STR2## wherein R has the above-given meanings, in an aqueous medium with hydrogen peroxide and an alkali metal hydroxide at a temperature of from -10.degree. C. to +50.degree. C. in at least two reaction zones connected in series and continuous isolation of the dialkylperoxydicarbonate formed from the solvent-free reaction mixture with the use of a centrifuge, wherein the reaction is carried out in the presence of a surfactant and the dialkylperoxydicarbonate formed is separated in molten form from the alkaline reaction mixture heated to or just above the melting temperature of the dialkylperoxydicarbonate.