Fluorinated esters as lubricants for heat transfer fluids
AssigneeMexichem Fluor S.A. De C.V.
InventorsRobert Elliot Low, Andrew Paul Sharratt, Emma Jane Hodgson
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Abstract
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, CW3 and OR on the basis that at least one X is OR; R is independently selected from the group consisting of C(O) (CH2)m(CF2)nY and CW2C(CW2OC(O)(CH2)m(CF2)nY)3; m is an integer from 0 to 2; 15 n is an integer from 2 to 8; Y is C(Z)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.
Claims54
A heat transfer composition, comprising a heat transfer portion together with a lubricant portion comprising one or more compounds of formula (I):
- wherein
- W is independently selected from the group consisting of H, F, Cl, Br, and I;
- X is independently selected from the group consisting of H, F, Cl, Br, I, CW3, and OR on the basis that at least one X is OR;
- R is independently selected from the group consisting of C(O)(CH2)m(CF2)nY and CW2C(CW2OC(O)(CH2)m(CF2)nY)3;
- m is an integer from 0 to 2, provided that m is 1 or 2 if R is C(O)(CH2)m(CF2)nY;
- n is an integer from 2 to 8;
- Y is C(Z)3;
- and
- Z is independently selected from the group consisting of H, F, Cl, Br, and I.
A heat transfer composition, comprising a heat transfer portion together with a lubricant portion comprising one or more compounds of formula (I):
- wherein
- W is independently selected from the group consisting of H, F, Cl, Br, and I;
- all four of the X substituents are OR;
- R is independently selected from the group consisting of C(O)(CH2)m(CF2)nY and CW2C(CW2OC(O)(CH2)m(CF2)nY)3;
- m is an integer from 0 to 2;
- n is an integer from 2 to 8;
- Y is C(Z)3;
- and
- Z is independently selected from the group consisting of H, F, Cl, Br, and I.
A heat transfer composition, comprising a heat transfer portion together with a lubricant portion comprising one or more compounds of formula (I):
- wherein
- W is independently selected from the group consisting of H, F, Cl, Br, and I;
- X is independently selected from the group consisting of H, F, Cl, Br, I, CW3, and OR on the basis that at least one X is OR;
- R is independently selected from the group consisting of C(O)(CH2)m(CF2)nY and CW2C(CW2OC(O)(CH2)m(CF2)nY)3;
- m is an integer from 0 to 2;
- n is an integer from 2 to 8;
- Y is C(Z)3;
- Z is independently selected from the group consisting of H, F, Cl, Br, and I;
- and
- wherein one R substituent is CW2C(CW2OC(O)(CH2)m(CF2)nY)3.
A mechanical power generation device containing a composition according to claim.
A lubricant composition comprising a compound of formula (I) in a proportion of at least 10 wt % of the total weight of the lubricant:
- wherein
- W is independently selected from the group consisting of H, F, Cl, Br, and I;
- X is independently selected from the group consisting of H, F, Cl, Br, I, CW3, and OR on the basis that at least one X is OR;
- R is independently selected from the group consisting of C(O)(CH2)m(CF2)nY and CW2C(CW2OC(O)(CH2)m(CF2)nY)3;
- m is an integer from 0 to 2, provided that m is 1 or 2 if R is C(O)(CH2)m(CF2)nY;
- n is an integer from 2 to 8;
- Y is C(Z)3;
- and
- Z is independently selected from the group consisting of H, F, Cl, Br, and I.
Dependencies are inferred from the claim text.