Melam granulate material and process for preparation thereof
AssigneeDsm IP Assets B.V.
InventorsGerard Jan Kwant, Christiaan Johannes Cornelis Stoelwinder, Bas van Laarhoven
Life of this patent
Estimating the term…
Loading patent…
AssigneeDsm IP Assets B.V.
InventorsGerard Jan Kwant, Christiaan Johannes Cornelis Stoelwinder, Bas van Laarhoven
Estimating the term…
The invention relates to a method for producing a free flowing flame retardant material, comprising steps of i. preparing an aqueous slurry from a freshly prepared moist melam having a water content of at least 8 wt. %, relative to the total weight of the moist melam, the slurry comprising water, melam and a water soluble polymeric binding agent, wherein the melam is present in an amount of 5-35 wt. % relative to the total weight of the slurry, and the water soluble polymeric binding agent is present in an amount of 0.5-8 wt. % relative to the total amount of melam and the water soluble polymeric binding agent; ii. drying the slurry in a fluid bed to form a granulate material; and iii. collecting the resulting granulate material. The invention also relates to a melam granulate material, obtainable by said process.
Process for the preparation of a melam granulate material, comprising steps of
Flame retardant polymer composition, comprising a thermoplastic polymer, melam and a water soluble polymer, preferably selected from polyvinyl alcohol, polyvinylpyrrolidone and/or polyvinylcaprolactam, obtainable by the process according to claim 12, wherein the water soluble polymer is present in an amount of 0.5-8 wt. % relative to the amount of melam.
Dependencies are inferred from the claim text.