Azeotrope-like refrigerants with chlorodifluoromethane, pentafluoroethane, and C2-C4 hydroca
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C09K-005/04
C11D-007/30
출원번호
US-0484419
(1995-06-07)
발명자
/ 주소
Bivens Donald B. (Kennett Square PA) Shiflett Mark B. (Newark DE) Yokozeki Akimichi (Wilmington DE)
출원인 / 주소
E. I. Du Pont de Nemours and Company (Wilmington DE 02)
인용정보
피인용 횟수 :
11인용 특허 :
14
초록▼
Near-Azeotropic blends of: pentafluoroethane and 1,1,1-trifluoroethane with one or more of chlorodifluoromethane, 1,2,2,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, 1-chloro-1,1,2,2-tetrafluoroethane, 1-chloro-1,2,2,2-tetrafluoroethane, 1,1,1,2,3,3,3-heptafluoropropane, 1,1,1,2,2,3,3-heptafluorop
Near-Azeotropic blends of: pentafluoroethane and 1,1,1-trifluoroethane with one or more of chlorodifluoromethane, 1,2,2,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, 1-chloro-1,1,2,2-tetrafluoroethane, 1-chloro-1,2,2,2-tetrafluoroethane, 1,1,1,2,3,3,3-heptafluoropropane, 1,1,1,2,2,3,3-heptafluoropropane, and perfluorocyclopropane; chlorodifluoromethane and pentafluoroethane with one or more of ethane, butane, isobutane, dimethyl ether, propylene, and difluoromethane; chlorodifluoromethane with 1,1,1-trifluoroethane and 1,2,2,2-tetrafluoroethane, propane and pentafluoroethane, or 1,1,1-trifluoroethane and octafluoropropane; and pentafluoroethane with fluoroethane and 1,2,2,2-tetrafluoroethane, along with their use as refrigerants.
대표청구항▼
A near-azeotropic composition consisting essentially of about 26.6 to 63.7 percent by weight chlorodifluoromethane, about 2 percent by weight propane, and about 33.6 to 70.6 percent by weight pentafluoroethane, wherein said composition has a vapor pressure of about 174.8 to 198.9 psia at room temper
A near-azeotropic composition consisting essentially of about 26.6 to 63.7 percent by weight chlorodifluoromethane, about 2 percent by weight propane, and about 33.6 to 70.6 percent by weight pentafluoroethane, wherein said composition has a vapor pressure of about 174.8 to 198.9 psia at room temperature and, wherein when 30 weight percent of the composition leaks out as vapor at room temperature, the vapor pressure of the composition changes less than 10 percent.
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이 특허에 인용된 특허 (14)
Larue Joseph (Vaucresson FRX) Rojey Alexandre (Garches FRX), Absorption method for the generation of cold and/or heat using a mixture of several constituents as working fluid.
Shankland Ian R. (Williamsville NY) Richard Robert G. (Cheektowaga NY) Lund Earl A. E. (West Seneca NY), Azeotrope-like compositions of pentafluoroethane; 1,1,1-trifluoroethane; and chlorodifluoromethane.
Ostrozynski Robert L. (Williamsville NY) Orfeo Sabatino R. (Orchard Park NY) Jones Philip E. (Basking Ridge NJ) Lund Earl A. E. (West Seneca NY), Constant boiling mixtures of 1,1,1,2-tetrafluorochloroethane and chlorofluoromethane.
Gu Chujun (A5 South Rd. of Liuliqiao District ; Beijing CNX), Working media for a thermodynamic engineering device operating in accordance with the Gu thermodynamic cycle.
Bivens, Donald Bernard; Minor, Barbara Haviland; Yokozeki, Akimichi, Compositions of difluoromethane, pentafluoroethane, 1,1,1,2-tetrafluoroethane and hydrocarbons.
Minor Barbara Haviland ; Patron Donna Marie ; Klug Diana Lynn ; Lunger Brooks Shawn, Compositions which include 1,1,2,2- tetrafluoroethane and fluoroethane.
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