摘要:
The invention relates to a method for preparing peroxide, including a step of treating, in a reaction medium, a component having at least one tertiary alcohol grouping with a compound having at least one tertiary hydroperoxide function in the presence of a catalyst, said method being characterised in that the catalyst includes a sulphonic acid and a inorganic acid, the molar ratio between the sulphonic acid and the aforementioned component including at least one tertiary alcohol grouping ranges from 0.05 to 0.8, and the molar ratio between the inorganic acid and the aforementioned component including at least one tertiary alcohol grouping ranges from 0.05 to 0.8. The invention also relates to the peroxide resulting directly from said preparation method.
摘要:
A novel dialkyl peroxide is disclosed which is represented by the formula:
wherein R₁ and R₂ independently stand for a hydrogen atom or a methyl group, R₃ stands for an alkyl group of 1 to 5 carbon atoms, X stands for an alkylene group of 1 to 3 carbon atoms, -C(O)-, -CH₂-(O-CH₂-CHR₄) m -OC(O)- [wherein R₄ stands for a hydrogen atom or a methyl group and m stands for an integer in the range of 0 to 10], or -C(O)-(O-CH₂-CHR₅) n -OC(O)- (wherein R₅ stands for a hydrogen atom or a methyl group and n stands for an integer in the range of 1 to 10). A composition for the production of a cross-linked ethylene type polymer comprises the dialkyl peroxide and an ethylene type polymer. An electric power cable excelling in electrical characteristics (AC breakdown strength) comprises a conductor and a resin layer deposited on the periphery of the conductor and formed of a cross-linked ethylene type polymer obtained by using the dialkyl peroxide as a cross-linking agent.