The present invention provides a class of halogen-containing synthetic base oils, and preparation method and use thereof. The synthetic base oils have introduced with halogen, especially fluorine, wherein the dipole motion of the halogen groups results in dipole interaction between the dipoles of other components and the base oil molecules of dipole-dipole and dipole-induced halogen (especially fluorine), and the interaction force is stronger and more localized than the dispersion force between the molecules of pure hydrocarbon synthetic oils, and thus the performance of the base oils is directly affected. It solved the problem of oil solubility of pure hydrocarbon synthetic oils, and also improved the properties of oxidation resistance and thermal stability.

The present invention provides a class of halogen-containing synthetic base oils, and preparation method and use thereof. The synthetic base oils have introduced with halogen, especially fluorine, wherein the dipole motion of the halogen groups results in dipole interaction between the dipoles of other components and the base oil molecules of dipole-dipole and dipole-induced halogen (especially fluorine), and the interaction force is stronger and more localized than the dispersion force between the molecules of pure hydrocarbon synthetic oils, and thus the performance of the base oils is directly affected. It solved the problem of oil solubility of pure hydrocarbon synthetic oils, and also improved the properties of oxidation resistance and thermal stability.

The present invention provides compounds of formula (I): wherein W is independently selected from the group consisting of H, F, Cl, Br and I; 10 X is independently selected from the group consisting of H, F, Cl, Br, I, CW.sub.3 and OR on the basis that at least one X is OR; R is independently selected from the group consisting of C(O) (CH.sub.2).sub.m(CF.sub.2).sub.nY and CW.sub.2C(CW.sub.2OC(O)(CH.sub.2)m(CF.sub.2)nY).sub.3; m is an integer from 0 to 2; 15 n is an integer from 2 to 8; Y is C(Z).sub.3; and Z is independently selected from the group consisting of H, F, Cl, Br and I. Such compounds may be utilised as lubricants, for example in heat transfer compositions.

The present invention provides compounds of formula (I): wherein W is independently selected from the group consisting of H, F, Cl, Br and I; 10 X is independently selected from the group consisting of H, F, Cl, Br, I, CW.sub.3 and OR on the basis that at least one X is OR; R is independently selected from the group consisting of C(O) (CH.sub.2).sub.m(CF.sub.2).sub.nY and CW.sub.2C(CW.sub.2OC(O)(CH.sub.2)m(CF.sub.2)nY).sub.3; m is an integer from 0 to 2; 15 n is an integer from 2 to 8; Y is C(Z).sub.3; and Z is independently selected from the group consisting of H, F, Cl, Br and I. Such compounds may be utilised as lubricants, for example in heat transfer compositions.

A single chemical composition comprising to clean and/or lubricate fluid encompassing systems and systems' components comprising of fluid conduit(s), and/or fluid reservoir(s), and/or valve(s), and/or device(s).

Fluid encompassing systems that dispense a fluid or fluids for in vitro and/or in vivo procedures and/or for consumption must be cleaned. A fluid encompassing system and this system's encompassing fluid are both susceptible to contamination

This invention's chemical composition performed routinely cleans the contamination of this system, which also helps maintain the chemical and physical properties for this system's encompassing fluid. This chemical composition also lubricates the surfaces of this system's components. Lubricating this system's components such as valves helps enhance the functioning of said system. This chemical composition also improves this system's fluid flow and helps eliminate odor and foul tasting contaminates from this system.

This chemical composition enhances fluid encompassing systems' operation and efficiency, which helps prolong the life span of these systems and said systems' components.

A single chemical composition comprising to clean and/or lubricate fluid encompassing systems and systems' components comprising of fluid conduit(s), and/or fluid reservoir(s), and/or valve(s), and/or device(s).

Fluid encompassing systems that dispense a fluid or fluids for in vitro and/or in vivo procedures and/or for consumption must be cleaned. A fluid encompassing system and this system's encompassing fluid are both susceptible to contamination

This invention's chemical composition performed routinely cleans the contamination of this system, which also helps maintain the chemical and physical properties for this system's encompassing fluid. This chemical composition also lubricates the surfaces of this system's components. Lubricating this system's components such as valves helps enhance the functioning of said system. This chemical composition also improves this system's fluid flow and helps eliminate odor and foul tasting contaminates from this system.

This chemical composition enhances fluid encompassing systems' operation and efficiency, which helps prolong the life span of these systems and said systems' components.

The present invention provides compounds of formula (I): wherein W is independently selected from the group consisting of H, F, Cl, Br and I; 10 X is independently selected from the group consisting of H, F, Cl, Br, I, CW.sub.3 and OR on the basis that at least one X is OR; R is independently selected from the group consisting of C(O) (CH.sub.2 ).sub.m(CF.sub.2 ).sub.nY and CW.sub.2C(CW.sub.2OC(O)(CH.sub.2 )m(CF.sub.2 )nY).sub.3; m is an integer from 0 to 2; 15 n is an integer from 2 to 8; Y is C(Z).sub.3; and Z is independently selected from the group consisting of H, F, Cl, Br and I. Such compounds may be utilised as lubricants, for example in heat transfer compositions.

The present invention provides compounds of formula (I): wherein W is independently selected from the group consisting of H, F, Cl, Br and I; 10 X is independently selected from the group consisting of H, F, Cl, Br, I, CW.sub.3 and OR on the basis that at least one X is OR; R is independently selected from the group consisting of C(O) (CH.sub.2 ).sub.m(CF.sub.2 ).sub.nY and CW.sub.2C(CW.sub.2OC(O)(CH.sub.2 )m(CF.sub.2 )nY).sub.3; m is an integer from 0 to 2; 15 n is an integer from 2 to 8; Y is C(Z).sub.3; and Z is independently selected from the group consisting of H, F, Cl, Br and I. Such compounds may be utilised as lubricants, for example in heat transfer compositions.

The present invention provides a polytetrafluoroethylene powder having high dispersibility in lubricants. The polytetrafluoroethylene powder includes polytetrafluoroethylene containing a tetrafluoroethylene unit alone or a tetrafluoroethylene unit and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene, and has a specific surface area of 32 m.sup.2/g or larger.

The present invention provides a polytetrafluoroethylene powder having high dispersibility in lubricants. The polytetrafluoroethylene powder includes polytetrafluoroethylene containing a tetrafluoroethylene unit alone or a tetrafluoroethylene unit and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene, and has a specific surface area of 32 m.sup.2/g or larger.