Pentafluoroethane, tetrafluoroethane and hydrocarbon...

C - Chemistry – Metallurgy – 09 – K

Patent

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C09K 5/04 (2006.01)

Patent

CA 2671114

Disclosed are compositions containing pentafluoroethane, 1,1,1,2-tetrafluoroethane and at least two hydrocarbons each having eight or fewer carbon atoms. Disclosed herein are compositions containing about 13 weight percent to about 20 weight percent pentafluoroethane; about 70 weight percent to about 80 weight percent 1,1,1,2-tetrafluoroethane; about 1 weight percent to about 6 weight total of at combination of hydrocarbons consisting of n-butane and n-pentane. Also disclosed herein are compositions further comprising 1,1,1,2,3,3,3-heptafluoropropane. Also disclosed are azeotrope-like compositions comprising pentafluoroethane, 1,1,1,2-tetrafluoroethane, n-butane and n-pentane and azeotrope like compositions comprising pentafluoroethane, 1,1,1,2-tetrafluoroethane, n-butane, n-pentane, and 1,1,1,2,3,3,3-heptafluoropropane.

L'invention concerne des compositions contenant du pentafluoroéthane, du 1,1,1,2-tétrafluoroéthane et au moins deux hydrocarbures ayant chacun huit atomes de carbone ou moins. L'invention concerne également des compositions contenant d'environ 13 pourcent en poids à environ 20 pourcent en poids de pentafluoroéthane ; d'environ 70 pourcent en poids à environ 80 pourcent en poids de 1,1,1,2-tétrafluoroéthane ; d'environ 1 pourcent en poids à environ 6 pourcent en poids d'un total d'un mélange d'hydrocarbures constitué de n-butane et de n-pentane. L'invention concerne également des compositions comprenant également du 1,1,1,2,3,3,3-heptafluoropropane. L'invention concerne également des compositions azéotropes comprenant du pentafluoroéthane, du 1,1,1,2-tétrafluoroéthane, du n-butane et du n-pentane et des compositions azéotropes comprenant du pentafluoroéthane, du 1,1,1,2-tétrafluoroéthane, du n-butane, du n-pentane et du 1,1,1,2,3,3,3-heptafluoropropane.

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