Bio-based lubricants
AssigneeEthox Chemicals, LLC
InventorJames T Tanner
Life of this patent
Estimating the term…
Abstract
The invention provides biobased lubricants comprising the reaction product of a natural oil, fatty acid or derivative having unsaturation sites with a suitable substrate such as maleic anhydride that is capable of undergoing an “ene” or Diels Alder reaction with the natural oil to form an adduct; followed by a controlled non-aqueous neutralization with a suitable inorganic base such as lithium hydroxide.
Claims34
Natural oil based lubricants of formulas (i) and (ii)
- where R represents the additional carbon and functional moieties associated with a natural oil and where the natural oil or natural oil derivative contains greater than about 80 percent of unsaturated or conjugated unsaturated fatty acids and wherein said lubricant is the reaction product of said natural oil or natural oil derivative with a substrate capable of undergoing a Diels Alder reaction to form an adduct that is further reacted in a neutralization reaction with a lithium base to form an anhydrous gel.
A method for making lubricants based on natural oils and derivatives thereof comprising:
- (a) reacting the natural oil fatty acid or derivative a suitable substrate that is capable of undergoing a Diels Alder reaction with the natural oil to form an adduct;
- and
- (b) subjecting the product of step (a) to a controlled non-aqueous neutralization with a suitable inorganic base.
A natural oil based lubricant obtained by the process of:
- treating soy bean oil to a form conjugated soil bean oil comprising a conjugated diene;
- reacting said conjugated diene with an α, β-ethylenically unsaturated dicarboxy compound in a Diels-Alder cycloaddition reaction to form an anhydride ring;
- and
- opening said anhydride ring to form a fully or partially neutralized acid salt.
A natural oil based lubricant obtained by the process of:
- treating a natural oil to a form a conjugated natural oil comprising a conjugated diene;
- reacting said conjugated diene with an α, β-ethylenically unsaturated dicarboxy compound in a Diels-Alder cycloaddition reaction to form an anhydride ring;
- and
- opening said anhydride ring to form a fully or partially neutralized acid salt.
A method for making natural oil based lubricants comprising:
- forming a conjugated natural oil from a natural oil wherein said conjugated natural oil comprises a conjugated diene having a structure
- R1—CH═CH—CH═CH—R2
- wherein said R1 and R2 represent the additional moieties associated with said conjugated natural oil;
- reacting said conjugated diene with an α, β-ethylenically unsaturated dicarboxy compound to form a maleated natural oil comprising an anhydride ring having a structure:
- and
- opening said anhydride ring.
Dependencies are inferred from the claim text.