Azeotrope-like compositions of tetrafluoropropenes and bromofluoropropenes
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C09K-005/04
C09K-005/00
C08J-009/228
C08J-009/00
B08B-003/04
출원번호
UP-0711225
(2007-02-27)
등록번호
US-7597818
(2009-10-20)
발명자
/ 주소
Singh, Rajiv R
Wilson, David P
Shankland, Ian
Pham, Hang T
출원인 / 주소
Honeywell International Inc.
대리인 / 주소
Szuch, Colleen D.
인용정보
피인용 횟수 :
8인용 특허 :
5
초록
Mixtures of tetrafluoropropenes with bromofluoropropenes provide compositions that have boiling points within an acceptable range, have good chemical stability, low GWP and are essentially non-flammable.
대표청구항▼
The invention claimed is: 1. An azeotrope-like composition consisting essentially of about 1 to about 60 wt. % 2-bromopentafluoropropene and about 40 to about 99 wt. % of a tetrafluoropropene selected from the group consisting of 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene. 2. The a
The invention claimed is: 1. An azeotrope-like composition consisting essentially of about 1 to about 60 wt. % 2-bromopentafluoropropene and about 40 to about 99 wt. % of a tetrafluoropropene selected from the group consisting of 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene. 2. The azeotrope-like composition of claim 1 wherein said tetrafluoropropene is 2,3,3,3-tetrafluoropropene. 3. The azeotrope-like composition of claim 1 wherein said 2-bromopentafluoropropene is present in an amount of about 1 to about 50 wt. % and said 2,3,3,3-tetrafluoropropene is present in an amount of about 50 to about 99 wt. %. 4. The azeotrope-like composition of claim 1 wherein said 2-bromopentafluoropropene is present in an amount of about 1 to about 40 wt. % and said 2,3,3,3-tetrafluoropropene is present in an amount of about 60 to about 99 wt. %. 5. The azeotrope-like composition of claim 1 wherein said tetrafluoropropene is 1,3,3,3-tetrafluoropropene. 6. The azeotrope-like composition of claim 1 wherein said 2-bromopentafluoropropene is present in an amount of about 1 to about 50 wt. % and said 1,3,3,3-tetrafluoropropene is present in an amount of about 50 to about 99 wt. %. 7. The azeotrope-like composition of claim 1 wherein said 2-bromopentafluoropropene is present in an amount of about 1 to about 40 wt. % and said 1,3,3,3-tetrafluoropropene is present in an amount of about 60 to about 99 wt. %. 8. An azeotrope-like composition according to claim 1 wherein the composition meets the non-flammability standard of ASHRAE-34 (2004) and has a GWP of 10 or less. 9. An azeotrope-like composition according to claim 1 additionally consisting essentially of one or more additional components wherein the one or more additional components are selected from the group consisting of stabilizers, metal passivators, corrosion inhibitors, and lubricants. 10. A working fluid comprising an azeotrope-like composition according to claim 1 wherein said working fluid is selected from the group consisting of a refrigerant, a blowing agent, a sprayable composition, a sterilant, a propellant, a flame suppressive, and a solvent. 11. A refrigerant comprising an azeotrope-like composition of claim 1. 12. A refrigeration system comprising a refrigerant of claim 11. 13. A method for cooling an article which comprises evaporating a refrigerant of claim 11 in the vicinity of the article to be cooled. 14. A method for heating an article which comprises condensing a refrigerant of claim 11 in the vicinity of the article to be heated. 15. A sprayable composition comprising a material to be sprayed and a propellant comprising an azeotrope-like composition of claim 1. 16. A blowing agent comprising an azeotrope-like composition of claim 1. 17. A closed cell foam prepared by foaming a foamable composition in the presence of a blowing agent comprising the composition of claim 1. 18. The closed cell foam of claim 17 wherein said foamable composition comprises polyurethane, polyisocyanu rate, polystyrene, polyethylene, and mixtures thereof. 19. A method of reducing the flammability of a fluid comprising adding to said fluid a flame suppressant comprising an azeotrope-like composition of claim 1. 20. A method of suppressing a flame comprising contacting said flame with a flame suppressant comprising an azeotrope-like composition of claim 1. 21. A method of sterilizing an article, said method comprising contacting said article to be sterilized with a sterilant comprising an azeotrope-like composition of claim 1. 22. A method of forming a foam comprising adding to a foamable composition a blowing agent comprising an azeotrope-like composition of claim 1. 23. A premix of a polyol and a blowing agent wherein the blowing agent comprises an azeotrope-like composition of claim 1. 24. A method of recharging a refrigeration system that contains a refrigerant to be replaced and a lubricant comprising the steps of: (a) removing the refrigerant to be replaced from the refrigeration system while retaining a substantial portion of the lubricant in said system; and (b) introducing into the refrigeration system a refrigerant of claim 11.
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이 특허에 인용된 특허 (5)
Sharma,Vimal; Register,W. Douglas; Harris,James; Rowland,Thomas F.; Cisneros,Mark, Fire extinguishing mixtures, methods and systems.
Tapscott Robert E., Tropodegradable bromine-containing halocarbon additives to decrease flammability of refrigerants foam blowing agents solvents aerosol propellants and sterilants.
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