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US 11,807,826 B2Granted
Lubricating base oils from esterified alkoxylated polyols using saturated long-chain fatty acids
AssigneeUniverstiy of South Carolina
InventorsZachary Hunt, Peter Gennaro, Jeffrey R. DiMaio, Benjamin Bergmann
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Abstract
The present disclosure relates to methods and compositions for making bio-based, biodegradable, and non-bioaccumulating lubricating base oils generated by esterifying alkoxylated polyols (average alkoxylation ≥3) with long-chain (≥C14) saturated and unsaturated fatty acids (FA) or fatty acids modified using industry recognized techniques.
Claims19
A synthetic ester comprising:
- at least one propoxylated or butoxylated polyol, wherein an average degree of propoxylation or butoxylation is ≥3;
- at least one fatty acid, wherein the at least one fatty acid is equal to or greater than C4;
- and
- wherein a hydroxyl value of the synthetic ester is less than 8 mg KOH/g.
1 more element
A method for forming a synthetic ester comprising:
- propoxylating or butoxylating at least one polyol backbone, wherein an average degree of propoxylation or butoxylation is from ≥3;
- esterifying the at least one propoxylated or butoxylated polyol backbone with at least one fatty acid, wherein the at least one fatty acid is equal to or greater than C4;
- and
- wherein the hydroxyl value of the synthetic ester is less than 8 mg KOH/g.
1 more element
Dependencies are inferred from the claim text.