C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 9/14 (2006.01) C08J 9/228 (2006.01) C08L 25/06 (2006.01)
Patent
CA 2578900
A blowing agent blend for making thermoplastic polymer foams comprises methyl formate. The blowing agent blend can further comprise at least one co-blowing agent. The co-blowing agent is either a physical co-blowing agent (e.g. an inorganic agent, a hydrocarbon, a halogenated hydrocarbon, a hydrocarbon with polar, functional group(s), water or any combination thereof), or a chemical co-blowing agent, or combinations thereof. The thermoplastic polymer foam can be an alkenyl aromatic polymer foam, e.g. a polystyrene foam. The blowing agent blend can comprise any combination of methyl formate and one or more co- blowing agents. The methyl formate-based blowing agent blends produce stable foams for various applications, including containers, packaging systems, as well as insulation boards and building materials. A process for the preparation of such foams is also provided.
Mélange d'agent de soufflage permettant d'obtenir des mousses polymères thermoplastiques comprenant un formate de méthyle. Ce mélange peut comprendre également au moins un agent de co-soufflage, constitué soit d'un agent de co-soufflage physique (p.ex. un agent inorganique, un hydrocarbone, un hydrocarbone halogéné, un hydrocarbone à groupe(s) polaire(s), fonctionnel(s), de l'eau ou une combinaison des éléments précités), soit un agent de co-soufflage chimique, ou leurs combinaisons. La mousse polymère thermoplastique est une mousse polymère aromatique alcényle, par exemple une mousse de polystyrène. Le mélange d'agent de soufflage peut comporter une combinaison quelconque de formate de méthyle et d'un ou plusieurs agents de co-soufflage. Les mélanges d'agent de soufflage utilisant un formate de méthyle produisent des mousses stables trouvant diverses applications, à savoir comme conteneur, système d'emballage, et tableau d'isolement ainsi que matériaux de construction. Procédé de préparation de telles mousses.
Brackman Joseph A.
Castner Glenn C.
Handa Yash Paul
Zafar Mohammad
Marks & Clerk
Pactiv Corporation
Zafar Mohammad
LandOfFree
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