Heat transfer fluids and methods of using same
Assignee3M Innovative Properties Company
InventorWilliam M. Lamanna
Life of this patent
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Abstract
An apparatus for heat transfer includes a device and a mechanism for transferring heat to or from the device. The mechanism for transferring heat includes a working fluid that includes a hexafluoropropylene trimer having Structural Formula (1) The hexafluoropropylene trimer having Structural Formula (1) is present in the working fluid in an amount of at least 85% by weight, based on the total weight of hexafluoropropylene trimer in the working fluid.
Claims6
An apparatus for heat transfer comprising:
- a device;
- and
- a mechanism for transferring heat to or from the device, the mechanism comprising a working fluid comprising a hexafluoropropylene trimer having Structural Formula (1)
- wherein the hexafluoropropylene trimer having Structural Formula (1) is present in the working fluid in an amount of at least 85% by weight, based on the total weight of hexafluoropropylene trimer in the working fluid.
A method of transferring heat comprising:
- providing a device;
- and
- transferring heat to or from the device using a working fluid that comprises a hexafluoropropylene trimer having Structural Formula (1)
- wherein the hexafluoropropylene trimer having Structural Formula (1) is present in the working fluid in an amount of at least 85% by weight, based on the total weight of hexafluoropropylene trimer in the working fluid.
A method of making an isomerically pure hexafluoropropylene trimer, the method comprising:
- reacting hexafluoropropylene monomer with a catalyst, in the presence of a solvent, to form a crude fluorochemical reaction product comprising hexafluoropropylene trimer having Structural Formula (1)
- and;
- isolating the crude fluorochemical reaction product from the catalyst and solvent;
- wherein the step of reacting hexafluoropropylene monomer with a catalyst comprises continuously feeding the hexafluoropropylene monomer to a reaction mixture at a feed rate of less than 30% by weight per hour, based on the total weight of hexafluoropropylene monomer fed to the reaction mixture;
- wherein the step of reacting hexafluoropropylene monomer with a catalyst is carried out at a reaction temperature of at least 60° C.;
- wherein the hexafluoropropylene trimer having Structural Formula (1) is present in an amount of at least 70% by weight, based on the total weight of the isolated crude fluorochemical reaction product;
- and
- wherein the hexafluoropropylene trimer having Structural Formula (1) is present in an amount of at least at least 85% by weight, based on the total weight of the hexafluoropropylene trimer present in the isolated crude fluorochemical reaction product.
Dependencies are inferred from the claim text.