Molded polyurethane foam with enhanced physical properties

Details Molded polyurethane foam with enhanced physical properties Molded polyurethane foam with enhanced physical properties

C - Chemistry, Metallurgy

08

G

C08G 18/10 (2006.01) C08G 18/48 (2006.01) C08J 9/08 (2006.01)

Patent

CA 2239620

Isocyanate-terminated-prepolymers prepared from polyoxyalkylene polyether polyols having low unsaturation are suitable for producing polyurethane molded foam having exceptional physical properties. Preferably, the foams are all water blown, and process well. The foams are noted for concomitant increases in both tensile strength and elongation as well as displaying excellent wet set and other properties.

La présente invention concerne des prépolymères à terminaisons isocyanates obtenus à partir de polyéther polyols de polyoxyalkylène faiblement insaturés. Ces prépolymères conviennent particulièrement à la production de mousse de polyuréthane moulée présentant des propriétés physiques exceptionnelles. De préférence, toutes ces mousses sont gonflées à l'eau et sont faciles à mettre en oeuvre. Ces mousses, présentent une résistance à la traction et un allongement améliorés et font preuve entre autres d'excellentes propriétés de rémanence à la compression à l'état humide.

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