1,1,1,2,2,3,3,4,4-nanofluoro-4-methoxybutane refrigerant...

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 5/00 (2006.01)

Patent

CA 2565349

The present invention relates to compositions for use in refrigeration and air- conditioning systems comprising 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane and at least one chlorocarbon, alcohol, ether, ester, N-(difluoromethyl)-N,N- dimethylamine, or mixtures thereof. Further, the present invention relates to compositions for use in refrigeration and air-conditioning systems employing a centrifugal compressor comprising 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane and at least one chlorocarbon, alcohol, ether, ester, N-(difluoromethyl)-N,N- dimethylamine, or mixtures thereof. The compositions of the present invention may be azeotropic or near-azeotropic and are useful in processes for producing cooling or heat or as heat transfer fluids.

L'invention concerne des compositions à utiliser dans des systèmes de réfrigération et de conditionnement d'air comprenant du 1,1,1,2,2,3,3,4,4-nonafluoro-4-méthoxybutane et au moins un chlorocarbure, un alcool, un éther, un ester, du N-(difluorométhyl)-N,N-diméthylamine, ou des mélanges de ceux-ci. En outre, l'invention concerne des compositions à utiliser dans des systèmes de réfrigération et de conditionnement d'air faisant appel à un compresseur centrifuge comprenant du 1,1,1,2,2,3,3,4,4-nonafluoro-4-méthoxybutane et au moins un chlorocarbure, un alcool, un éther, un ester, du N-(difluorométhyl)-N,N-diméthylamine, ou des mélanges de ceux-ci. Les compositions de l'invention peuvent être azéotropiques ou presque azéotropiques, et sont utiles dans des procédés de production de refroidissement ou de chaleur, ou en tant que fluides de transfert de chaleur.

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