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US 11,534,743 B2Granted
Acid composition for processing fatty acids
AssigneeArkema France
InventorsJean-Alex Laffitte, Bernard Monguillon, Vijay Srinivas
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Abstract
The invention relates to a composition comprising: at least one alkane-sulphonic acid R—SO3H wherein R represents a saturated, linear or branched, hydrocarbon chain comprising from 1 to 4 carbon atoms, which can or cannot be substituted by at least one halogen atom; sulphuric acid; and optionally at least one solvent; of which the proportions are defined in the description. The invention also relates to the use of the composition as a fatty acid esterification catalyst.
Claims16
A composition comprising:
- one or more alkane-sulphonic acids of formula R—SO3H wherein R represents a saturated, linear or branched, hydrocarbon chain comprising from 1 to 4 carbon atoms;
- sulphuric acid;
- and optionally at least one solvent;
- wherein:
- the proportion by weight of alkane-sulphonic acid in relation to the total weight of the alkane-sulphonic acid and sulphuric acid is comprised between 40% and 90%;
- the proportion by weight of sulphuric acid in relation to the total weight of the alkane-sulphonic acid and sulphuric acid is comprised between 10% and 60%;
- the proportion by weight of solvent relative to the total weight of the composition is comprised between 0% and 50%;
- and
- the one or more alkane-sulphonic acids comprises methane-sulphonic acid.
6 more elements
Dependencies are inferred from the claim text.