A resin composition for use in forming a polyurethane...

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 18/10 (2006.01) C08G 18/40 (2006.01) C08G 18/48 (2006.01) C08G 18/63 (2006.01) C08G 18/76 (2006.01)

Patent

CA 2691706

A unique combination ofa hydrophilic polyol (A) and a hydrophobic polyol (B) having a terminal ethylene oxide cap are used in a resin composition and a polyurethane system, and are used to form a polyurethane article, such as a polyurethane foam. The hydrophilic polyol (A) is ethylene oxide (EO) rich and the hydrophobic polyol (B) is propylene oxide (PO) rich. The hydrophilic polyol (A) and the hydrophobic polyol (B) are present in the resin composition and the polyurethane system in a weight ratio (A:B) of from 1.5:1 to 20:1. The polyurethane article exhibits excellent comfort for use in vehicle applications, such as automotive and motorcycle seating, due to reduced resonance frequency and reduced peak vibration transmissivity relative to previous polyurethane articles.

L'invention concerne une combinaison unique d'un polyol hydrophile (A) et d'un polyol hydrophobe (B) ayant une coiffe terminale d'oxyde d'éthylène, qui sont utilisés dans une composition de résine et un système de polyuréthane, et sont utilisés pour former un article de polyuréthane, tel qu'une mousse de polyuréthane. Le polyol hydrophile (A) est riche en oxyde d'éthylène (EO) et le polyol hydrophobe (B) est riche en oxyde de propylène (PO). Le polyol hydrophile (A) et le polyol hydrophobe (B) sont présents dans la composition de résine et le système de polyuréthane dans un rapport massique (A:B) de 1,5:1 à 20:1. L'article de polyuréthane présente un confort excellent pour une utilisation dans des applications de véhicules, telles qu'un siège d'automobile et de moto, en raison d'une fréquence de résonance réduite et d'une transmissivité réduite de vibrations de pic par rapport aux articles de polyuréthane préalablement connus.

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