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.
Claims75
A compound 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;
- and
- Z is independently selected from the group consisting of H, F, Cl, Br and I.
A compound according to any one of the preceding claims, wherein at least three of the X substituents are OR.
A compound according to any one of the preceding claims, wherein all four of the X substituents are OR.
A compound according to any one of the preceding claims, wherein R is C(O)(CH2)m(CF2)nY.
A compound according to any one of the preceding claims, wherein when m is 0 n is an integer from 5 to 8.
A compound according to any one of the preceding claims, wherein Y is independently selected from the group consisting of CF3 and CF2H.
A compound according to any one of the preceding claims, wherein W is H.
A lubricant composition comprising a compound according to any one of the preceding claims, preferably in a proportion of at least 10, 20, 30, 40, 50 wt % of the total weight of the lubricant.
A method of preparing a compound of formula (I) comprising reacting a compound of formula (A) with a compound of formula (B):
- 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 R, on the basis that at least one X is OR;
- R is independently selected from the group consisting of H and CW2C(CW2OH)3;
- m is an integer from 0 to 2;
- n is an integer from 2 to 8;
- V is OH, F, Cl, Br or I;
- Y is C(Z)3;
- and
- Z is independently selected from the group consisting of H, F, Cl, Br and I;
The use of a compound according to formula (I) as a lubricant, for example, in heat transfer applications.
Dependencies are inferred from the claim text.