IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0833409
(2007-08-03)
|
등록번호 |
US-7837894
(2011-01-22)
|
발명자
/ 주소 |
- Roberts, Neil Andre
- Chambers, Owen Ross
|
출원인 / 주소 |
- E. I. du Pont de Nemours and Company
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
26 |
초록
▼
Refrigerant composition are disclosed which comprises: (a) pentafluoroethane, trifluoromethoxydifluoromethane or hexafluorocyclopropane, or a mixture of two or more thereof, in an amount of at least 75% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetraf
Refrigerant composition are disclosed which comprises: (a) pentafluoroethane, trifluoromethoxydifluoromethane or hexafluorocyclopropane, or a mixture of two or more thereof, in an amount of at least 75% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, trifluoromethoxypentafluoroethane, 1,1,1,2,3,3-heptafluoropropane or a mixture of two or more thereof, in an amount of from 10 to 20% by weight based on the weight of the composition and (c) an ethylenically unsaturated or saturated hydrocarbon, optionally containing one or more oxygen atoms, with a boiling point from −50° C. to +35° C., or a mixture thereof in an amount from 1% to 4% by weight based on the weight of the composition the weight ratio of component (a):component (b) being at least 4:1.
대표청구항
▼
The invention claimed is: 1. A nonflammable refrigerant composition consisting of: (a) pentafluoroethane in an amount of 83-90% based on the weight of the composition; (b) 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane or a mixture thereof in an amount of 7.5-15% by weight based on the weight
The invention claimed is: 1. A nonflammable refrigerant composition consisting of: (a) pentafluoroethane in an amount of 83-90% based on the weight of the composition; (b) 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane or a mixture thereof in an amount of 7.5-15% by weight based on the weight of the composition; and (c) isobutane in an amount of from 1-4% by weight based on the weight of the composition. 2. The composition according to claim 1, wherein the isobutane is an amount of 3-4% by weight based on the weight of the composition. 3. A refrigeration apparatus containing, as refrigerant, a composition as claimed in claim 1. 4. A nonflammable refrigerant composition consisting of: (a) pentafluoroethane in an amount of 80-90% based on the weight of the composition; (b) 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, or a mixture thereof in an amount of 7.5-15% by weight based on the weight of the composition; (c) isobutane in an amount of from 1-4% by weight based on the weight of the composition; and (d) an additional component comprising either a lubricant, an additive selected from the group consisting of extreme pressure, antiwear improvers, oxidation inhibitors, thermal stability improvers, corrosion inhibitors improvers, viscosity is index improvers, pour point depressants, detergents, anti-foaming agents, and viscosity adjusters; or mixtures of the lubricant and the additive. 5. A refrigeration apparatus containing, as refrigerant, a composition as claimed in claim 4. 6. The composition according to claim 4 comprising at least one lubricant selected from the group consisting of mineral oils, alkylbenzene lubricants, synthetic lubricants, and fluorinated oils and mixtures thereof. 7. A nonflammable refrigerant composition consisting of: (a) pentafluoroethane in an amount of 80-90% based on the weight of the composition; (b) 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, or a mixture thereof in an amount of 7.5-15% by weight based on the weight of the composition; (c) isobutane in an amount of from 1-4% by weight based on the weight of the composition; (d) an additional component comprising either a lubricant, an additive selected from the group consisting of extreme pressure, antiwear improvers, oxidation inhibitors, thermal stability improvers, corrosion inhibitors improvers, viscosity is index improvers, pour point depressants, detergents, anti-foaming agents, and viscosity adjusters; or mixtures of the lubricant and the additive; and (e) a hydrofluorocarbon in an amount not exceeding 5% by weight. 8. The nonflammable refrigerant composition of claim 7, wherein the hydrofluorocarbon is selected from the group consisting of trifluoromethane, difluoromethane and mixtures thereof. 9. The nonflammable composition according to claim 8 comprising at least one lubricant selected from the group consisting of mineral oils, alkylbenzene lubricants, synthetic lubricants, and fluorinated oils and mixtures thereof. 10. A refrigeration apparatus containing, as refrigerant, a composition as claimed in claim 7. 11. The composition according to claim 7 comprising at least one lubricant selected from the group consisting of mineral oils, alkylbenzene lubricants, synthetic lubricants, and fluorinated oils and mixtures thereof. 12. A nonflammable refrigerant composition consisting of: (a) pentafluoroethane in an amount of 80-90% based on the weight of the composition; (b) 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, or a mixture thereof in an amount of 7.5-15% by weight based on the weight of the composition; (c) isobutane in an amount of from 1-4% by weight based on the weight of the composition; (d) a hydrofluorocarbon selected from the group consisting of trifluoromethane, difluoromethane and mixtures thereof in an amount not exceeding 5% by weight.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.