Demulsifying and dehydrating formulations for heavy crude oils based on block copolymers bifunctionalized with amines

A formulation comprising at least one amine bifunctionalized block copolymer formula 5a or 5b at a concentration of 5 to 50% by weight, in a solvent having a boiling point of 35 to 200° C., wherein said amine bifunctionalized block copolymer has the formula 5a and 5b, and has an average molecular weight within the range between 800 and 4000 Daltons

• where:
• w and y are an independent integer in the range of 10 to 60 to provide an average molecular weight of 800 to 4000 Daltons;
• R1 and R2 are radicals independently selected from the group consisting of
• —H;
• —CH2(CH2)AH;
• —CEGJ;
• —CH2CHL(OH);
• —CH2(CH2)QOH;
• where A is an integer between 1 and 9,
• E, G and J are independently a radical selected from the group consisting of:
• —H, methyl, ethyl, n-propyl, iso-propyl, sec-butyl, iso-butyl, tert-butyl, n-butyl, phenyl, cyclohexyl, cyclopentyl,
• L is a radical selected from the group consisting of methyl or ethyl,
• Q is an integer between 1 and 5, T is selected from the group consisting of —H, methyl, ethyl, n-propyl, iso-propyl, sec-butyl, iso-butyl, tert-butyl, n-butyl, phenyl, cyclohexyl, cyclopentyl, NO2, Cl, F and Br,
• where:
• U is a number between 1 and 2,
• X is an atom selected from the group consisting of oxygen and nitrogen, when X is nitrogen then V is selected from the group consisting of -methyl, ethyl, n-propyl, iso-propyl, sec-butyl, iso-butyl, tert-butyl, n-butyl phenyl, cyclohexyl, cyclopentyl, and benzyl, and
• Z is selected from the group consisting of methyl, ethyl, n-propyl, iso-propyl, sec-butyl, iso-butyl, tert-butyl, n-butyl, phenyl, cyclohexyl, cyclopentyl, benzyl and hydroxyl.