Lubricity enhancing additives, a method for producing the same and use thereof

1. A water-miscible lubricity enhancing additive consisting of the product of an alkoxylation reaction between only an alkylene oxide and a blown native oil, wherein the blown native oil is a native oil polymerized only by blowing hot air through the native oil, and the product is water-miscible.

2. The lubricity enhancing additive of claim 1 , wherein:

the alkylene oxide is ethylene oxide, propylene oxide, 1,2-butylene oxide, 2,3-butylene oxide, 1,2-pentylene oxide, 2,3-pentylene oxide, 1,2-hexylene oxide, 3-methyl-1,2-pentylene oxide, 2,3-octylene oxide, 4-methyl-2,3-octylene oxide, 4-methyl-1,2-hexylene oxide and/or 3-methyl-1,2-butylene oxide; and

the native oil is babussa oil, cottonseed oil, borage oil, thistle oil, peanut oil, currant seed oil, hazelnut oil, herring oil, wood oil, jojoba oil, coconut oil, neatsfoot oil, bone oil, lard oil, liver oil, linseed oil, corn oil, almond oil, olive oil, palm oil, palm kernel oil, rapeseed oil, beef tallow, castor oil, sardine oil, mustard seed oil, soybean oil, sunflower oil, rhea butter, tail oil, grapeseed oil, whale oil, walnut oil, and/or refined and partially hydrogenated variants thereof.

3. The lubricity enhancing additive of claim 1 , wherein the lubricity enhancing additive is ethoxylated blown native oil.

4. The lubricity enhancing additive of claim 1 , wherein:

the alkylene oxide is ethylene oxide; and

the blown native oil is blown rapeseed oil.

5. The lubricity enhancing additive of claim 1 , wherein the lubricity enhancing additive is ethoxylated blown rapeseed oil.

6. The lubricity enhancing additive of claim 1 , wherein the blown native oil is polyhydroxylic and the alkoxylation reaction is done in the absence of further polyhydroxylic alcohols.

7. A method for producing the lubricity enhancing additive according to claim 1 , the method comprising alkoxylating only the blown native oil in the presence of a catalyst.

8. The method of claim 7 , wherein:

the alkylene oxide is ethylene oxide, propylene oxide, 1,2-butylene oxide, 2,3-butylene oxide, 1,2-pentylene oxide, 2,3-pentylene oxide, 1,2-hexylene oxide, 3-methyl-1,2-pentylene oxide, 2,3-octylene oxide, 4-methyl-2,3-octylene oxide, 4-methyl-1,2-hexylene oxide and/or 3-methyl-1,2-butylene oxide; and

the native oil is babussa oil, cottonseed oil, borage oil, thistle oil, peanut oil, currant seed oil, hazelnut oil, herring oil, wood oil, jojoba oil, coconut oil, neatsfoot oil, bone oil, lard oil, liver oil, linseed oil, corn oil, almond oil, olive oil, palm oil, palm kernel oil, rapeseed oil, beef tallow, castor oil, sardine oil, mustard seed oil, soybean oil, sunflower oil, shea butter, tall oil, grapeseed oil, whale oil, walnut oil, and/or refined and partially hydrogenated variants thereof.

9. The method of claim 8 , wherein the alkoxylation is done at a ratio of 30-50 wt % blown native oil to 70-50 wt % alkylene oxide at a temperature of 100 to 190° C., a pressure of 1 to 6 bar, and in the presence of a nucleophilic catalyst.

10. The method of claim 9 , wherein the nucleophilic catalyst is a selected from the group consisting of alcoholates, hydroxides and amines.

11. The method of claim 10 , wherein the catalyst is sodium methanolate.

12. The method of claim 11 , wherein the temperature is 160 to 180° C.

13. The method of claim 7 , wherein the blown native all is polyhydroxylic and the alkoxylation reaction is done in the absence of further polyhydroxylic alcohols.

14. The method of claim 13 , wherein:

the alkylene oxide is ethylene oxide; and

the blown native oil is blown rapeseed oil.

15. A water-miscible lubricant comprising the lubricity enhancing additive according to claim 1 .