In-situ polymerization on recycled foam fragments

Details In-situ polymerization on recycled foam fragments In-situ polymerization on recycled foam fragments

C - Chemistry, Metallurgy

08

J

C08J 9/35 (2006.01) C08L 75/04 (2006.01)

Patent

CA 2440608

Process for preparing rebonded, flexible foam articles is provided. The process includes mixing together a mass of flexible foam crumbs with a liquid reaction mixture comprising polyisocyanate having a free isocyanate group content of greater than 10 % by weight and polyfunctional organic isocynate- reactive material. The rebonded, flexible foam articles can be prepared in the absence of steam as a curative agent.

L'invention porte sur un procédé de préparation d'articles souples de mousses recollées consistant à mélanger à une masse de miettes de mousse souple, un mélange réactif d'un polyisocyanate présentant plus de 10 % en poids d'un groupe libre d'isocyanate, et un matériau organique polyfonctionnel réagissant avec l'isocyanate. Lesdits articles peuvent se préparer sans nécessiter de vapeur comme durcisseur.

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