Process for the preparation of a fireproofing Agent Based on Ammonium POLYPHOSPHATE

摘要

Procedure for obtaining fireproofing agents that are based on Ammonium POLYPHOSPHATE.Is to maintain during 0.5 to 5 hours, with agitation, at temperatures between 30jc and 200jc, a suspension consisting of a diluting Agent, such as a Solvent or Solvent mixtures protonicamente assets not miscible with water, ammonium POLYPHOSPHATE, a Powder free Mind flowing, of formula (i),In which n is 200 and 800 and the relationship of m a n is approximately 1, as well as a polyisocyanate and Water; and after Cold, filtered and dried microencapsulated Ammonium POLYPHOSPHATE with a policarbodiimida. These flame retardants have applications for adjustment of Flameproof Polyurethane or Polyurethane Foam.