Alkoxylated phosphate esters for lubricant compositions
The present invention concerns a composition suitable for working and shaping metals, in particular providing a lubricating effect, including polymers of the following formula: [R—O(—CH(CH 3 )—CH 2 O—) n (CH 2 —CH 2 O—) p —] 1+x P(═O)(OH) 2-x in which: R is a linear or branched, preferably linear, saturated or unsaturated hydrocarbon group, comprising between 8 and 12 carbon atoms; n is a number, which may or may not be an integer, between 6 and 20; p is a number, which may or may not be an integer, between 4 and 25; and x is a number between 0 and 1, and in particular between 0.1 and 0.9.
1. A lubricating formulation, comprising an emulsion and a polymer composition comprising polymers of formula (I) below:
[R—O(—CH(CH 3 )—CH 2 O—) n (CH 2 —CH 2 O—) p —] 1+x P(═O)(OH) 2-x (I)
wherein:
R is a linear or branched, saturated or unsaturated hydrocarbon-based group comprising from 8 to 12 carbon atoms
n is a number, integer or not, between 6.5 and 20
p is a number, integer or not, between 4 and 25
x is a number between 0 and 1
wherein the emulsion has an emulsion stability index greater than 95.
2. The lubricating formulation as claimed in claim 1 , wherein the R group is a saturated or monounsaturated alkyl group.
3. The lubricating formulation as claimed in claim 2 , wherein the polymers are polymers of following formula (la):
[CH 3 —(CH 2 ) 11 —O—(CH(CH 3 )—CH 2 O—) n (—CH 2 —CH 2 O—) p ] 1+x —P(═O)(OH) 2-x (Ia)
wherein n, p and x are as defined.
4. The lubricating formulation as claimed in claim 1 , wherein n is between 6.5 and 15.
5. The lubricating formulation as claimed in claim 1 , wherein p is between 4.5 and 20.
6. The lubricating formulation as claimed in claim 1 , wherein n is equal to 7.5 and p is equal to 5.
7. The lubricating formulation as claimed in claim 6 , wherein the polymers are polymers of following formula (Ib):
[CH 3 —(CH 2 ) 11 —O—(CH(CH 3 )—CH 2 O) 7.5 (—CH 2 —CH 2 O—) 5 ] 1+x —P(═O)(OH) 2-x (Ib)
wherein x is as defined.
8. The lubricating formulation according to claim 1 wherein the formulation is a lubricating formulation for cutting metals.
9. The lubricating formulation according to claim 1 wherein the formulation is a lubricating formulation for working or shaping aluminum.
10. The lubricating formulation according to claim 1 , wherein x is a number between 0.1 and 0.9.
11. The lubricating formulation according to claim 2 , wherein the R group is a linear, saturated or monounsaturated alkyl group.
12. The lubricating formulation according to claim 4 , wherein n is between 7 and 10.
13. The lubricating formulation according to claim 5 , wherein p is between 4.5 and 10.
14. The lubricating formulation according to claim 9 wherein the formulation is a lubricating formulation for cutting aluminum.
15. The lubricating formulation according to claim 1 , wherein 5% to 30% by mass of the polymer is incorporated in an oil to form a mixture.
16. The lubricating formulation according to claim 15 , wherein 5% to 15% of the mixture is mixed with 85% to 95% of water to form an emulsion.