C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 9/28 (2006.01) A41D 31/00 (2006.01) B01J 20/26 (2006.01) B32B 5/18 (2006.01) C08J 9/00 (2006.01)
Patent
CA 2428063
The invention relates to foam composites having improved properties. These polymeric foams are prepared by polymerization of certain water-in-oil emulsions having a relatively high ratio of water phase to oil phase, commonly known in the art as high internal phase emulsions, or "HIPEs." The HIPE- derived foam materials used in the present invention comprise a generally hydrophobic, flexible, semi-flexible, or rigid nonionic polymeric foam structure of interconnected open-cells. These foam structures have a density of less than about 100 mg/cc, a glass transition temperature (Tg) of between about -40~ and 90 ~C, and at least about 1 % by weight compatible fibers incorporated into the foam. The foam composites have improved tensile properties compared to foams having no incorporated fibers or foams having noncompatible fibers incorporated therein.
L'invention concerne des composites de mousse dotés de propriétés améliorées. Ces mousses polymères sont préparées par polymérisation de certaines émulsions eau dans huile possédant un rapport phase aqueuse-phase huileuse relativement élevé, plus connu dans le domaine sous le nom d'émulsions à phase interne élevée ou HIPE. Les matériaux de mousse dérivés de HIPE, utilisés dans la présente invention comprennent une structure de mousse polymère généralement hydrophobe, flexible, semi-flexible ou rigide non ionique de cellules ouvertes reliées. Ces structures de mousse ont une densité inférieure à environ 100 mg/cc, une température de transition vitreuse (Tg) comprise entre environ 40· et 90 ·C, et au moins 1 % en pds de fibres compatibles incorporées dans la mousse. Les composites de mousse présentent des propriétés d'allongement améliorées par rapport à des mousses n'incorporant aucune fibre ou des mousses incorporant des fibres non compatibles.
Desmarais Thomas Allen
Dyer John Collins
Mcchain Robert Joseph
Smith Edward Creston
Tremblay Mario Elmen
Sim & Mcburney
The Procter & Gamble Company
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