High performance biohydraulic fluid
AssigneeWashington State University
InventorThomas Q. Chastek
Life of this patent
Estimating the term…
Abstract
A biohydraulic fluid which has high performance attributes and which is environmentally acceptable includes trimethylolpropane (TMP) esterified to monounsaturated fatty acids of unsaturated vegetable oils or vegetable oil blends. The process for making the TMP esters can be accomplished in a manner similar to biodiesel production wherein methyl oleates obtained from reacting methanol with the vegetable oils or vegetable oil blends are reacted with TMP. Production of the TMP esters can be achieved without the use of catalysts.
Claims15
A biohydraulic fluid, comprising:
- 60% or more by weight of a synthetic trimethylol propane (TMP) esterified with monounsaturated fatty acid moieties of a first vegetable oil or mixture of vegetable oils, wherein said first vegetable oil or mixture of vegetable oils contains at least 70% monounsaturated fatty acids;
- and
- at least 20% or more by weight of a second vegetable oil or mixture of vegetable oils, wherein said first and second vegetable oil or mixture of vegetable oils may be the same or different.
A method for preparing a trimethylolpropane (TMP) base fluid for a lubricant, comprising the steps of:
- reacting an unsaturated vegetable oil with methanol to prepare a biodiesel containing methyloleates and other waste organics;
- separating glycerol from said biodiesel;
- and
- reacting said methyloleates in said biodiesel with TMP to produce a mixture containing TMP esters.
A method for preparing a biohydraulic fluid, comprising the steps of:
- preparing a trimethylolpropane (TMP) base fluid by
- reacting a first unsaturated vegetable oil or mixture of unsaturated vegetable oils with methanol to prepare a biodiesel containing methyloleates and other waste organics;
- separating glycerol from said biodiesel;
- reacting said methyloleates in said biodiesel with TMP to produce a mixture containing TMP esters;
- washing said mixture containing TMP esters;
- and
- separating water and biodiesel from said mixture containing TMP esters to produce a TMP base fluid;
- combining said TMP base fluid with a second unsaturated vegetable oil or mixture of unsaturated vegetable oils which may be the same or different from said first unsaturated vegetable oil or mixture of unsaturated vegetable oils;
- and
- adding one or more additives to a formulation of said TMB base fluid and said a second unsaturated vegetable oil or mixture of unsaturated vegetable oils.
Dependencies are inferred from the claim text.