Melamine cyanurate in crystalline form

摘要

The present invention relates to a novel process for preparing solid, small particles comprising melamine cyanurate in essentially crystalline form. A concentrated aqueous dispersion is prepared of a mixture of cyanuric acid and melamine and selected surfactants are added to the dispersion.

主权项

1. An aqueous dispersion consisting essentially of
at least 25 weight percent, based on the total weight of the dispersion, of a mixture of cyanuric acid and melamine, an additive selected from the group consisting of
b′) dimethyldiallylammonium chloride or a homopolymer or a copolymer thereof; andb″) a low molecular weight styrene/maleic anhydride copolymer or a partial ester derivative or hydrolysis product thereof, a base and water.