FIELD: chemistry.
SUBSTANCE: invention concerns a method for preparing black polystyrene comprising the following steps: preparing an aqueous suspension comprising the styrene monomer and carbon, heating the suspension to a polymerisation temperature of between 90 °C and 130 °C, adding, in its entirety or continuously, before, during and/or after the abovementioned heating step, at least one organic peroxide main initiator. Initiator has the formula 1-alkoxy-1-t-alkylperoxycyclohexane, in which the alkoxy group comprises between 1 and 4 carbon atoms, the tert-alkyl group comprises between 4 and 12 carbon atoms, and the cyclohexane ring can optionally be substituted by 1 to 3 alkyl groups, each separately comprising between 1 and 3 carbon atoms. Present invention also relates to the polystyrene obtained directly by means of this preparation method.
EFFECT: invention makes it possible to obtain black polystyrene and shorten the reaction time.
26 cl
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