IP Library › Patent Application 11746760
Patent Application
App. No. 11/746,760

REFRIGERANT COMPOSITIONS

Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US None
App. No.
11/746,760
Abstract

Refrigerant compositions are disclosed which comprise: (a) pentafluoroethane, octafluoropropane, trifluoromethoxydifluoromethane or nexafluoro-cyclopropane, or a mixture of two or more thereof, in an amount of at least about 35% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, 1,1-difluoroethane, trifluoromethoxypentafluoroethane, 1,1,1,2,3,3-heptafluoropropane or a mixture of two or more thereof, in an amount of at least bout 30% by weight based on the weight of the composition and (c) n-butane, in an amount from about 2.3 to about 4% by weight based on the weight of the composition.

Claims (19)

1 - 27 . (canceled)

28 . A refrigerant composition which consisting essentially of:

a. pentafluoroethane in an amount from 5 to 60% based on the weight of the composition,

b. at least on second component selected from the group consisting of 1,1,1,2,3,3,3-heptafluoropropane, 1,1,1,2,2,3,3-heptafluoropropane, or a mixture thereof, in an amount from 30 to 94% by weight based on the weight of the composition and

c. an unsubstituted hydrocarbon of the formula C n H m in which n is at least 4 and m is at least 2n−2, other than methyl propane, in an amount from 1 to 10% based on the weight of the composition.

29 . The composition according to claim 28 in which component (c) is present in an amount from 2 to 6% by weight based on the weight of the composition.

30 . The composition according to claim 29 in which component (c) is present in an amount from 3 to 4% by weight based on the weight of the composition.

31 . A composition according to claim 28 which comprises pentafluoroethane in an amount from 5 to 20% by weight based on the weight of the composition.

32 . The composition according to claim 28 which further consists essentially of an additional component selected from a lubricant, an additive, or a mixture thereof.

33 . The composition according to claim 32 , wherein the lubricant is further selected from the group consisting of mineral oils, alkylbenzene lubricants, synthetic lubricants, and fluorinated oils and mixtures thereof; and

an additive is selected from the group consisting of selected from the group consisting of extreme pressure, antiwear improvers, oxidation inhibitors, thermal stability improvers, corrosion inhibitors improvers, viscosity index improvers, pour point depressants, detergents, anti-foaming agents, and viscosity adjusters.

34 . A composition according to claim 1 in which component (c) is n-butane.

35 . A composition according to claim 34 which comprises: where in the component c) in an amount from about 2.3 to about 4% by weight based on the weight of the composition.

36 . A composition according to claim 35 in which component (c) is present in an amount from about 2.3 to 3.5% by weight based on the weight of the composition.

37 . A composition according to claim 28 in which component (a) is present in an amount from 35 to 60% by weight based on the weight of the composition.

38 . A composition according to claim 28 in which component (a) is present in an amount from 40 to 55% by weight based on the weight of the composition.

39 . A composition according to claim 28 in which component (a) is present in an amount from 45 to 52% by weight based on the weight of the composition.

40 . A composition according to claim 28 in which component (b) is present in an amount from 45 to 60% by weight based on the weight of the composition.

41 . A composition according to claim 28 in which component (b) is present in an amount from 47.5 to 55% by weight based on the weigh of the composition.