An aqueous emulsion of dialkyl peroxide has at least one dialkyl peroxide in liquid form at room temperature, representing between 10% and 75% by weight of the emulsion, at least one emulsifier representing from 0.01% to 10% by weight of the emulsion, optionally, at least one antifreeze, optionally at least one functional additive, water, the amount of which is determined so as to form the rest of said emulsion (100%), characterized in that the emulsifier is a polyethoxylated nonionic surfactant. Also, a process for preparing this aqueous emulsion.

An aqueous emulsion of dialkyl peroxide has at least one dialkyl peroxide in liquid form at room temperature, representing between 10% and 75% by weight of the emulsion, at least one emulsifier representing from 0.01% to 10% by weight of the emulsion, optionally, at least one antifreeze, optionally at least one functional additive, water, the amount of which is determined so as to form the rest of said emulsion (100%), characterized in that the emulsifier is a polyethoxylated nonionic surfactant. Also, a process for preparing this aqueous emulsion.

An object of the present invention it to provide a novel fluororesin that has excellent mechanical strength and chemical resistance, and very low permeability at high temperature. The fluorine resin is a copolymer that includes copolymerized units derived from tetrafluoroethylene, vinylidene fluoride, and an ethylenically unsaturated monomer other than tetrafluoroethylene and vinylidene fluoride. The fluororesin has a storage modulus E′, as measured at 170° C. by a dynamic viscoelasticity analysis, in the range of 60 to 400 MPa.

An object of the present invention it to provide a novel fluororesin that has excellent mechanical strength and chemical resistance, and very low permeability at high temperature. The fluorine resin is a copolymer that includes copolymerized units derived from tetrafluoroethylene, vinylidene fluoride, and an ethylenically unsaturated monomer other than tetrafluoroethylene and vinylidene fluoride. The fluororesin has a storage modulus E′, as measured at 170° C. by a dynamic viscoelasticity analysis, in the range of 60 to 400 MPa.

There is provided a composition containing one or more basic compounds selected from the group consisting of tertiary amines, nitrogen-containing heterocyclic aromatic compounds, alkali metal carbonate salts, alkaline earth metal carbonate salts and alkali metal hydrogencarbonate salts, and a homoallyl halide.

There is provided a composition containing one or more basic compounds selected from the group consisting of tertiary amines, nitrogen-containing heterocyclic aromatic compounds, alkali metal carbonate salts, alkaline earth metal carbonate salts and alkali metal hydrogencarbonate salts, and a homoallyl halide.

An aqueous emulsion of dialkyl peroxide has at least one dialkyl peroxide in liquid form at room temperature, representing between 10% and 75% by weight of the emulsion, at least one emulsifier representing from 0.01% to 10% by weight of the emulsion, optionally, at least one antifreeze, optionally at least one functional additive, water, the amount of which is determined so as to form the rest of said emulsion (100%), characterized in that the emulsifier is a polyethoxylated nonionic surfactant. Also, a process for preparing this aqueous emulsion.

An aqueous emulsion of dialkyl peroxide has at least one dialkyl peroxide in liquid form at room temperature, representing between 10% and 75% by weight of the emulsion, at least one emulsifier representing from 0.01% to 10% by weight of the emulsion, optionally, at least one antifreeze, optionally at least one functional additive, water, the amount of which is determined so as to form the rest of said emulsion (100%), characterized in that the emulsifier is a polyethoxylated nonionic surfactant. Also, a process for preparing this aqueous emulsion.

There is provided a composition containing one or more basic compounds selected from the group consisting of tertiary amines, nitrogen-containing heterocyclic aromatic compounds, alkali metal carbonate salts, alkaline earth metal carbonate salts and alkali metal hydrogencarbonate salts, and a homoallyl halide.

There is provided a composition containing one or more basic compounds selected from the group consisting of tertiary amines, nitrogen-containing heterocyclic aromatic compounds, alkali metal carbonate salts, alkaline earth metal carbonate salts and alkali metal hydrogencarbonate salts, and a homoallyl halide.