Azeotropic and azeotrope-like compositions of...

C - Chemistry – Metallurgy – 07 – C

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C07C 17/42 (2006.01) A62D 1/00 (2006.01) C08J 9/14 (2006.01) C09K 3/30 (2006.01) C09K 5/04 (2006.01) H01B 3/56 (2006.01) C07C 21/18 (2006.01)

Patent

CA 2680166

Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of Z-1,1,1,4,4,4-hexafluoro-2-butene with methyl formate, pentane, 2-methylbutane, 1,1,1,3,3-pentafluorobutane, trans-1,2-dichloroethylene, 1,1,1,3,3-pentafluoropropane, dimethoxymethane, or cyclopentane. Also disclosed is a process of preparing a thermoplastic or thermoset foam by using such azeotropic or azeotrope-like compositions as blowing agents. Also disclosed is a process of producing refrigeration by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as solvents. Also disclosed is a process of producing an aerosol product by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as heat transfer media. Also disclosed is a process of extinguishing or suppressing a fire by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as dielectrics.

La présente invention concerne des compositions azéotropiques et de type azéotropique. Ces compositions azéotropiques ou de type azéotropique sont des mélanges de Z-1,1,1,4,4,4-hexafluoro-2-butène avec du formiate de méthyle, du pentane, du 2-méthylbutane, du 1,1,1,3,3,3-pentafluorobutane, du trans-1,2-dichloroéthylène, du 1,1,1,3,3,3-pentafluoropropane, du diméthoxyméthane ou du cyclopentane. L'invention concerne également un procédé de préparation d'une mousse thermoplastique ou thermodurcie utilisant lesdites compositions azéotropiques ou de type azéotropique en tant qu'agents de soufflage. L'invention concerne encore un procédé de réfrigération utilisant lesdites compositions azéotropiques ou de type azéotropique. L'invention concerne également un procédé d'utilisation desdites compositions azéotropiques ou de type azéotropique en tant que solvants. L'invention concerne aussi un procédé de production d'un produit aérosol grâce à ces compositions azéotropiques ou de type azéotropique. L'invention concerne encore un procédé d'utilisation desdites compositions azéotropiques ou de type azéotropique en tant que milieux de transfert de chaleur. L'invention concerne, en outre, un procédé d'extinction ou de lutte contre les incendies au moyen desdites compositions azéotropiques ou de type azéotropique. L'invention concerne encore un procédé d'utilisation desdites compositions azéotropiques ou de type azéotropique en tant que diélectriques.

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