PROCESS FOR THE PREPARATION OF A MELAMINE BASED FLAME RETARDANT AND POLYMER COMPOSITION

摘要

The invention relates to a process for the preparation of a melamine based flame retardant by a reaction of a melamine comprising compound and a polyol in a molar ratio between 1.0 : 1 and 4.0 : 1, whereby the reaction is performed in an extruder equipped with a degassing means, at a temperature between 200 and 300~C. Furthermore the invention relates to a melamine based flame retardant obtainable by said process and a polymer composition comprising said melamine based flame retardant.