C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 9/22 (2006.01) C08G 18/34 (2006.01) C08G 18/76 (2006.01) C08K 3/22 (2006.01) C08K 3/38 (2006.01) C08K 5/49 (2006.01) C08L 75/04 (2006.01)
Patent
CA 2734949
This invention relates to a fire-resistant, medium density polyurethane foam. The foam is made up of a) 50 to 90 parts by weight of water blown polyurethane and b) 10 to 50 parts by weight of a solid flame retardant that contains ammonium polyphosphate and zinc borate, and in which the resultant foam contains at least 5% by weight of zinc borate. The present invention also relates to a process for the preparation of these fire- resistant, medium density polyurethane foams.
La présente invention concerne une mousse de polyuréthanne moyenne densité ignifuge. La mousse est réalisée à partir a) de 50 à 90 parties en poids de polyuréthanne gonflé à l'eau et b) de 10 à 50 parties en poids d'un ignifuge solide contenant du polyphosphate d'ammonium et du borate de zinc; la mousse ainsi obtenue contenant au moins 5% en poids de borate de zinc. La présente invention concerne également un procédé permettant de préparer ces mousses de polyuréthanne moyenne densité ignifuges.
Bayer Materialscience Llc
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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