title:  POLYURETHANE FLAME RETARDANT FORMULATION

number: WO2012116885

 publication date:  7 september 2012 (PCT)

applicant/assignee:  Huntsman Polyurethanes

Gist: A PU formulation with a mixture of ammonium polyphosphate and nano metal oxide particles (Mg or Al)

Why it is innovative:  While synergistic effects of fire retardant combinations are known and claimed in many patents, the use of very small metal oxide particles together with APP seems to have a real and significant effect.