Refrigerant compositions
AssigneeRhodia Inc.
InventorNeil Andre Roberts
Life of this patent
Estimating the term…
Abstract
Refrigerant compositions are disclosed which comprise: (a) pentafluoroethane, octafluoropropane, trifluoromethoxydifluoromethane or hexafluoro-cyclopropane, or a mixture of two or more thereof, in an amount of at least 35% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, trifluoromethoxypentafluoroethane, 1,1,2,3,3-heptafluoropropane or a mixture of two or more thereof, in an amount of at least 30% by weight based on the weight of the composition and (c) n-butane or isobutane, in an amount from 1% to less than 2.3% by weight based on the weight of the composition.
Claims24
A refrigerant composition which comprises:
- (a) pentafluoroethane, octafluoropropane, trifluoromethoxydifluoromethane or hexafluoro-cyclopropane, or a mixture of two or more thereof, in an amount of at least 35% based on the weight of the composition,
- (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, or trifluoromethoxypentafluoroethane, or a mixture of two or more thereof, in amount of at least 30% by weight based on the weight of the composition and
- (c) n-butane or isobutane, in amount from 1% to less than 2.3% by weight based on the weight of the composition, wherein that the total concentration of further component(s) does not exceed 30% by weight based on the weight of the composition.
Dependencies are inferred from the claim text.