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US 9,175,201 B2Granted
Stabilized iodocarbon compositions
AssigneeHoneywell International Inc.
InventorsRajiv R. Singh, Haridasan K. Nair, Raymond H. Thomas, Lawrence A. Ford, David P. Wilson
Life of this patent
Estimating the term…
Abstract
Disclosed are compositions comprising at least one iodocarbon compound and preferably at least one stabilization agent. These compositions are generally useful as refrigerants for heating and cooling, as blowing agents, as aerosol propellants, as solvent composition, and as fire extinguishing and suppressing agents.
Claims18
A heat transfer composition comprising:
- (a) at least one iodocarbon;
- (b) at least one refrigerant compound other than said iodocarbon;
- (c) a first stabilizing compound selected from the group consisting of dienes having at least four carbon atoms;
- (d) a second stabilizing compound selected from the group consisting of:
- (1) diene-based compounds having at least two carbon-carbon double bonds and at least four carbon atoms, different from (c);
- (2) epoxy compounds selected from compounds according to Formulas (E1) and (E2):
- where
- R1 is an aliphatic radical having at least 3 carbon atoms;
- R2 is an aliphatic radical having 4 or 5 carbon atoms or a polycyclic aromatic radical;
- (3) phosphites according to formula P1 below:
- where each R is independently a phenyl radical or
- a carboxylate radical having at least 6 but less than 15 carbon atoms;
- (4) unhindered or mildly hindered phenols;
- and
- (5) combinations of any two or more of these,
- said stabilizer compound(s) being present in an amount effective to stabilize said at least one iodocarbon against degradation;
- and
- (e) 30 wt % to about 50 wt % of at least one lubricant.
15 more elements
A heat transfer composition comprising:
- (a) at least one iodocarbon;
- (b) at least one refrigerant compound other than said iodocarbon;
- (c) 30 wt % to about 50 wt % of at least one lubricant comprising polyalkyleneglycol (PAG);
- (d) a first stabilizing compound selected from the group consisting of dienes;
- and
- (e) a second stabilizing compound selected from the group consisting of diene-based compounds different from (d), epoxides, phosphates, phosphites, and combinations of two or more thereof.
3 more elements
A heat transfer composition comprising:
- (a) at least one iodocarbon;
- (b) at least one refrigerant compound other than said iodocarbon;
- (c) about 50 wt % to about 71 wt % of at least one lubricant comprising polyalkyleneglycol (PAG);
- (d) a first stabilizing compound selected from the group consisting of dienes;
- and
- (e) a second stabilizing compound selected from the group consisting of diene-based compounds different from (d), epoxides, phosphates, phosphites, and combinations of two or more thereof.
3 more elements
Dependencies are inferred from the claim text.