SYNERGISTIC BLENDS OF ANTI-AGGLOMERANT GAS HYDRATE INHIBITORS WITH QUATERNARY ALKYL AMMONIUM COMPOUNDS

摘要

The present disclosure relates to a gas hydrate inhibitor composition comprising from an amphiphile having a hydrophobic tail linked to a hydrophilic head group by a linking moiety, the amphiphile having the general formula (1) [R⁵−L−N(R¹)(R²)(R³)]⁺ X- (1) wherein each of R¹ and R² is independently an alkyl group having from 1 to 5 carbon atoms; or wherein the nitrogen atom and the R¹ and R² groups together form a substituted or unsubstituted heterocyclic group; R³ is present or not as hydrogen or an alkyl group having from 1 to 8 carbon atoms which optionally bears a hydroxy group or a carboxy group in the 2-position; L is a linking moiety comprising an optionally substituted hydrocarbyl group having at least 2 adjacent carbon atoms, at least one heteroatom selected from nitrogen and oxygen, and optionally one or more further heteroatoms; R⁵ is a hydrocarbyl group having from 6 to 22 carbon atoms; and X- is present as an anion when R³ is present; and from a cationic surfactant which is selected from di(C₈-C₁₈ alkyl)dimethyl ammonium salts.