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

An amine bifunctionalized block copolymer of the formula 5a and 5b, having a molecular weight within the average range between 800 and 4000 Daltons

• Where:
• w and y numbers are in the range of 10 to 60;
• R1 and R2 radicals are independently selected from the group consisting of —H;
• —CH2(CH2)AB;
• —CEGJ;
• —CH2CHLM;
• —CH2(CH2)QM;
• where A is a number between 1 and 9,
• Bis H,
• 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 represented by methyl or ethyl and M is a hydroxyl group,
• Q is a number 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, and
• where:
• U is a number between 1 and 2.
• X is represented by atoms of oxygen and nitrogen, when X is nitrogen then V is represented by, -methyl, ethyl, n-propyl, iso-propyl, sec-butyl, iso-butyl, tert-butyl, n-butyl phenyl, cyclohexyl, cyclopentyl, benzyl.
• Z is represented by methyl, ethyl, n-propyl, iso-propyl, sec-butyl, iso-butyl, tert-butyl, n-butyl, phenyl, cyclohexyl, cyclopentyl, benzyl or hydroxyl at any position of the 5 or 6 members' rings.