Abstract: The present invention relates to compounds obtainable by esterification condensation of: A/ at least one alkoxylated fatty amine of formula (I), or of the product of partial or complete quaternization of said alkoxylated fatty amine of formula (I): in which R1, AO, B, n, m, s and y are as defined in the description, B/ with at least one dicarboxylic acid, or a derivative thereof, of formula (II) as follows: in which D and RA are as defined in the description, C/ with at least one (alkyl)alkanolamine derivative of formula (III) or of the product of partial or complete quaternization of said (alkyl)alkanolamine derivative of formula (III) as follows: in which A?O, u, u? and R7 are as defined in the description, and D/ with at least one fatty acid of formula (V) as follows: in which R11 is as defined in the description.

Abstract: The present invention relates to a composition comprising: at least one copolymer of which at least one of the repeating units comprises at least one amide function; and at least one polyether having a molecular weight (Mw) greater than 60 g.mol-1. The invention also relates to the use of said composition for delaying, or even preventing, the formation of gas hydrates, in particular in a method for extracting oil and/or gas and/or condensates, as well as to the method for delaying, or even preventing, the formation and/or agglomeration of gas hydrates, using a composition as defined above.

Abstract: A process is described for inhibiting and/or delaying and/or preventing the agglomeration of gas hydrates, comprising adding one or more compounds of formula (1) or salts thereof: wherein RR, OQ, Ra, R1, R2, SS, X?, t, x and y are defined in the specification and for the use of said compounds for formula (1) for inhibiting and/or delaying and/or preventing the agglomeration of gas hydrates.

Abstract: The present invention relates to a composition comprising: at least one co-polymer of which at least one of the repeating units comprises at least one amide function; and at least one polyether having a molecular weight (MW) greater than 60 g·mol?1. The invention also relates to the use of said composition for delaying, or even preventing, the formation of gas hydrates, in particular in a method for extracting oil and/or gas and/or condensates, as well as to the method for delaying, or even preventing, the formation and/or agglomeration of gas hydrates, using a composition as defined above.