Lactone oxazolines as oleaginous additives
AssigneeExxon Research & Engineering Co.
InventorsStanley J. Brois, Antonio Gutierrez
Life of this patent
Estimating the term…
Abstract
Lactone oxazoline reaction products of hydrocarbon substituted lactone carboxylic acids, for example, polybutyl lactone carboxylic acid, with 2,2-disubstituted-2-amino-1-alkanols, such as tris-(hydroxymethyl)aminomethane (THAM), and their derivatives are useful additives in oleaginous compositions, such as sludge dispersants for lubricating oil, or anti-rust agents for gasoline.
Claims3
A thiol substituted lactone acid obtained by reacting a molar proportion of a hydrocarbon-substituted C.sub.4 -C.sub.10 mono-unsaturated dicarboxylic acid anhydride with about one molar proportion of a functionalizing agent being a per acid oxidizing agent whereby an epoxide derivative is produced and thereafter reacting said product with an equimolar proportion of a thiol at a temperature of from about -20.degree. C. to 100.degree. C.
A thiyl substituted lactone acid, ester or amide represented by the formula:
- ##STR24## wherein R is selected from the group consisting of hydrogen and alkyl radicals containing from 1 to 400 carbons and T represents alkyl, aryl containing from 1 to 50 carbons, or 2-mercapto-benzathiazole and Q is selected from the group consisting of hydroxy, C.sub.1 -C.sub.10 alkoxy and dialkyl amino containing 2 to 10 carbons.
A sulfo lactone acid obtained by reacting a molar proportion of a hydrocarbon-substituted C.sub.4 -C.sub.10 mono-unsaturated dicarboxylic acid anhydride with about one molar proportion of chlorosulfonic acid as a thiylating agent at a temperature of -20.degree. C. to 100.degree. C. until functionalization is complete and said functionalized material is hydrated to the sulfo lactone acid.
Dependencies are inferred from the claim text.