Masterbatch for manufacturing an insulating layer of an electric cable

[0146] raw materials used

[0147]

[0148] Preparation of two masterbatches

[0149]

[0150] Table 2.

[0151] These two masterbatches have been prepared according to the same procedure as above.

[0152] Introduce the peroxide (B) followed by the antioxidant (C) in the flask. The flask was placed in a water bath at a temperature of 57°C and the mixture of peroxide and antioxidant was stirred using a barreau aimanté to obtain a homogeneous liquid mixture.

[0153] Copolymer (A) in granular form was introduced into a 250 ml Schott® glass flask.

[0154] A homogeneous liquid mixture of peroxide and antioxidant was heated using a water bath at 60°C, then the desired amount was withdrawn and introduced into a glass flask containing copolymer (A).

[0155] The flask was placed in an apparatus allowing continuous stirring and the temperature was maintained at 60°C until the homogeneous liquid mixture of peroxide and antioxidant had been completely absorbed by the copolym...