Flexible cell material, composition and preparation process

Details Flexible cell material, composition and preparation process Flexible cell material, composition and preparation process

C - Chemistry, Metallurgy

08

J

C08J 9/22 (2006.01) B29C 47/00 (2006.01) C08G 18/10 (2006.01) C08G 18/12 (2006.01) C08G 18/69 (2006.01) C08L 75/04 (2006.01) C09K 3/10 (2006.01)

Patent

CA 2259675

A flexible cellular material can be made by extruding a composition containing a polyurethane prepolymer, where the prepolymer has end groups selected from the group consisting of isocyanate end groups and trialkoxysilyl end groups, and the prepolymer is self-crosslinkable with moisture. The flexible cellular material has an expanded or foamed polymer matrix.

Le matériau cellulaire souple de l'invention a une matrice polymère expansée. Il est obtenu par extrusion d'un produit mono-composant renfermant un constituant macromoléculaire en présence de gaz sous pression, dans lequel le constituant macromoléculaire est un prépolymère de polyuréthanne à groupes terminaux isocyanate ou trialcoxysilyle, auto-réticulable à l'humidité. Le matériau cellulaire de l'invention permet d'obtenir des joints d'étanchéité.

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