Self skinning foams employing tertiary alcohols as blowing...

C - Chemistry – Metallurgy – 08 – J

Patent

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Details

C08J 9/06 (2006.01) C08G 18/48 (2006.01) C08J 9/14 (2006.01) C08J 9/34 (2006.01) C08L 75/04 (2006.01)

Patent

CA 2234440

The invention pertains to low weight, relatively low density semi-rigid and rigid self skinning polyurethane foams having improved surface hardness and reduced porosity over known water blown foams. The polyurethane foam includes an isocyanate component and an isocyanate reactive component including a blowing agent comprising water and at least one tertiary alcohol.

L'invention porte sur des mousses de polyuréthane, semi-rigides et rigides, de faible poids et de masse spécifique relativement basse, formant elles-mêmes une peau; ces mousses offrent une plus grande dureté en surface et une porosité réduite, comparativement aux mousses connues, gonflées à l'eau. La mousse de polyuréthane renferme un constituant isocyanate et un constituant réactif avec les isocyanates, incluant un gonflant à base d'eau et d'au moins un alcool tertiaire.

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