Copper electrolytic solution containing quaternary amine compound polymer with specific skeleton and organo-sulfur compound as additives, and electrolytic copper foil manufactured using the same

A method of manufacturing an electrolytic copper foil comprising the step of electrodepositing a copper foil on a rotating cathode drum from a copper electrolytic solution containing, as additives, an organo-sulfur compound expressed by the following general formula (4) or (5)

• X—R1—(S)n—R2—Y (4)
• R4—S—R3—SO3Z (5),
• wherein R1, R2 and R3 each independently are an alkylene group with 1-8 carbon atoms, R4 is a group selected from the group consisting of hydrogen,
• X is selected from the group consisting of hydrogen, a sulfonic acid group, a phosphoric acid group and an alkali metal salt group or ammonium salt group of sulfonic acid or phosphonic acid, Y is selected from the group consisting of a sulfonic acid group, a phosphonic acid group and an alkali metal salt group of sulfonic acid or phosphonic acid, Z is hydrogen or an alkali metal and n is 2 or 3, and a quaternary amine compound polymer obtained by homopolymerizing a compound expressed by the following general formula (2) or (3)
• wherein R1′ is hydrogen or an alkyl group with 1-5 carbon atoms, R2′ is an alkyl group with 1-5 carbon atoms, R3′ is an alkyl group with 1-5 carbon atoms, a benzyl group or an allyl group, X1 is Cl, Br or CH3SO4 and n1 is an integer of 1-5, or copolymerizing the compound of formula (2) or (3) with another compound having an unsaturated bond.