C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/00 (2006.01) C08G 18/08 (2006.01) C08G 18/42 (2006.01) C08J 9/00 (2006.01) C08J 9/14 (2006.01) C08K 3/04 (2006.01) C08K 5/49 (2006.01)
Patent
CA 2403867
A synthetic polymer foam is produced which incorporates fine particles of expandable graphite which surprisingly impart excellent fire resistant properties to the foam, particularly to foam made with a non-halogenated hydrocarbon as the primary blowing agent. For best results, the foam is produced through mixing the constituent materials, including the expandable graphite using a screw extruder. The foam can also be produced by creating a graphite/polyol or graphite/isocyanate dispersion in an extruder then mixing the remaining components in a conventional batch mixing or high pressure spraying process. Alternatively, conventional mixing can be used for the entire process, but use of a screw extruder in whole or in part is preferred.
L'invention concerne une mousse polymère synthétique comprenant de fines particules de graphite expansible qui confère, de façon étonnante, d'excellentes propriétés ignifuges à la mousse, notamment à une mousse constituée d'un hydrocarbure non halogéné comme agent d'expansion principal. Pour de meilleurs résultats, la mousse se fabrique en mélangeant ses matières constitutives, y compris le graphite expansible, au moyen d'une extrudeuse à vis. La mousse peut également se produire en formant dans une extrudeuse une dispersion graphite/polyol ou graphite/isocyanate, puis en mélangeant les composants restants selon un processus de mélange discontinu ou de pulvérisation à haute pression. Le mélange traditionnel peut également s'utiliser au cours du processus complet, mais l'utilisation d'une extrudeuse à vis pour une partie ou la totalité du processus est préférée.
Burgess James H.
Glorioso Sammie J.
Apache Products Company
Ip Rights Llc
Kirby Eades Gale Baker
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