Process for producing polyurethane foams based on specific...

Details Process for producing polyurethane foams based on specific... Process for producing polyurethane foams based on specific...

C - Chemistry, Metallurgy

08

G

C08G 18/10 (2006.01) C08G 18/48 (2006.01) C08G 18/71 (2006.01)

Patent

CA 2693545

The present invention relates to a process for producing particularly easy-to- foam and fast-curing polyurethane foams based on polyethers which have been modified with isocyanatosilanes, have a mean molecular weight (Mn) between 2000 and 8000 g/mol, and, as well as the main polypropylene oxide constituent, also have a proportion of 10--30% by weight of polyethylene oxide.

La présente invention concerne un procédé de fabrication de mousses de polyuréthanne dont l'expansion est particulièrement facile et le durcissement rapide. Les mousses selon l'invention sont à base de polyéthers modifiés par des isocyanatosilanes, qui présentent un poids moléculaire moyen (Mn) compris entre 2 000 et 8 000 g/mole et qui comprennent, outre le composant principal oxyde de polypropylène, également une proportion de 10 à 30 % en poids d'oxyde de polyéthylène.

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