Flexible, substantially open celled polyurethane foam and...

Details Flexible, substantially open celled polyurethane foam and... Flexible, substantially open celled polyurethane foam and...

C - Chemistry, Metallurgy

08

G

C08G 18/76 (2006.01) C08G 18/08 (2006.01) C08G 18/40 (2006.01) C08G 18/66 (2006.01) C08J 9/08 (2006.01) C08K 5/54 (2006.01)

Patent

CA 2289203

There is provided method of making substantially windowless open-celled polyurethane foam suitably a flexible foam which is especially desirable as a sponge material having superior wiping properties. The ingredients for a formulation for making said foam comprise: a polyol, a catalyst, a silicone stabilizer, a blowing agent, toluene diisocyanate, and cell openers and/or surfactants. In this method the ingredients are injected into a reaction chamber.

On décrit un procédé de production d'une mousse de polyuréthane à alvéoles ouvertes sensiblement dépourvues de fenêtres telle qu'une mousse souple plus spécialement recherchée en tant que matière spongieuse dotée de propriétés supérieures d'essuyage. Les ingrédients d'une composition permettant de produire cette mousse sont: un polyol, un catalyseur, un stabilisant pour silicone, un agent gonflant, un diisocynate de toluène et des agents d'ouverture d'alvéoles et/ou des tensio-actifs. Dans ce procédé les ingrédients sont injectés dans une chambre de réaction.

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