COMPOSITIONS COMPRISING DIFLUOROMETHANE, PENTAFLUOROETHANE, TETRAFLUOROETHANE AND TETRAFLUOROPROPENE AND USES THEREOF

World Intellectual Property Organization Patent

APP PUB NO WO-2015054110-A1
SERIAL NO

PCTUS2014059257

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Abstract

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Disclosed herein is a composition comprising (a) from 1 to 29 weight percent difluoromethane; (b) from 1 to 19 weight percent pentafluoroethane; (c) from 9 to 42 weight percent 1,1,2,2-tetrafluoroethane, 1,1,1,2-tetrafluoroethane, or a mixture thereof; and (d) from 34 to 68 weight percent 2,3,3,3-tetrafluoropropene, E-1,3,3,3-tetrafluoropropene or mixture thereof; wherein when the composition contains 2,3,3,3-tetrafluoropropene, the composition also contains at least some 1,1,2,2-tetrafluoroethane; wherein the ratio of component (a) to component (b) is at most 1.5:1; and wherein the ratio of component (c) to component (d) is at least 0.04:1. The compositions are useful in methods for producing cooling and heating, methods for producing air conditioning, methods for replacing HCFC-22, R-410A, R-407C, HFC-134a, CFC-12, HCFC-22 and HCFC-124 and in heat transfer systems including heat pumps and air conditioners.

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Patent Owner(s)

Patent OwnerAddress
DU PONTUS1007 MARKET STREET WILMINGTON DELAWARE 19898 19898

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Inventor(s)

Inventor Name Address
KONTOMARIS KONSTANTINOS WILMINGTON DE
LECK THOMAS JOSEPH HOCKESSIN DE DELAWARE 19707
NAICKER PAVANANDAN KISTA NEWARK DELAWARE 19711

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