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.