Foamed materials comprising a matrix having a high hardblock...

C - Chemistry – Metallurgy – 08 – G

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C08G 18/76 (2006.01) C08G 18/10 (2006.01) C08G 18/28 (2006.01) C08G 18/30 (2006.01) C08G 18/78 (2006.01) C08J 9/00 (2006.01) C08L 75/02 (2006.01)

Patent

CA 2715314

Foamed material having a density of less than 100 kg/m3 and comprising - a matrix material comprising a plurality of urea groups and having a hardblock content of more than 50 % (hereinafter called matrix A); and - a polymeric material which 1) has no groups which are able to form a urethane, urea or isocyanurate group with an isocyanate group, 2) is interpenetrating said matrix A, and 3) is a polymer having an average molecular weight of more than 500 which polymer comprises at least 50 % by weight of oxyethylene groups based on the weight of this polymer (hereinafter called polymeric material B); and wherein the relative amount of all ingredients used to make said matrix A and of said polymeric material B, on a weight basis, ranges from 10:90 to 70:30 and process for making such materials.

L'invention porte sur une matière moussée ayant une masse volumique inférieure à 100 kg/m3 et comprenant une matière de matrice comprenant une pluralité de groupes urées et ayant une teneur en blocs durs supérieure à 50 % (ci-après appelée matrice A) ; et une matière polymère qui 1) n'a pas de groupes qui sont aptes à former un groupe uréthane, urée ou isocyanurate avec un groupe isocyanate, 2) forme un alliage IPN avec ladite matrice A et 3) est un polymère ayant une masse moléculaire moyenne supérieure à 500, lequel polymère comprend au moins 50 % en poids de groupes oxyéthylènes sur la base du poids de ce polymère (ci-après appelée matière polymère B) ; et la quantité relative de tous les ingrédients utilisés pour former ladite matrice A et ladite matière polymère B, sur une base en poids, allant de 10:90 à 70:30. L'invention porte également sur un procédé de fabrication de telles matières.

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