Rigid polyurethane foams

Details Rigid polyurethane foams Rigid polyurethane foams

C - Chemistry, Metallurgy

08

J

C08J 9/14 (2006.01)

Patent

CA 2199812

Rigid polyurethane foams having a closed cell content higher than 85 %, a core density of below 32 kg/m3 and a dimensional stability, expressed as the sum of the absolute values of the relative linear changes in the three dimensions after exposure to -20 ~C for 14 days, of below 15 %.

Mousses polyuréthanne rigides dont la teneur en alvéoles fermées est supérieure à 85 % et la densité d'âme est inférieure à 32 kg/m?3¿, la stabilité dimensionnelle, exprimée en tant que somme des valeurs absolues des changements linéaires relatifs dans les trois dimensions après exposition à -20 ~C pendant 14 jours, étant inférieure à 15 %.

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