A process for preparing a coated metal substrate comprising the steps of: a) applying onto a metal substrate a coating formulation derived from an aqueous dispersion composition comprising: i) 1 to 15 weight percent, based on the weight of polymer solids in the dispersion, a fatty acid dispersant of 14 to 60 carbon atoms with an acid value in the range of 60 to 250; ii) from greater than 25 weight percent to less than 70 weight percent, based on the weight of polymer solids in the dispersion, an acid functionalized propylene-based copolymer with an acid value in the range of 0.5 to 20 and a melting point at or above 130 °C as determined by DSC; wherein, in the propylene-based copolymer, the repeating polymeric chain comprises at least 60 wt. % of structural units derived from propylene and from 0.1 to 40 wt. % of structural units derived from one or more alpha-olefin comonomers; iii) 15 to 60 weight percent, based on the weight of polymer solids in the dispersion, a non-functionalized propylene-co-alkene base copolymer, wherein the weight-to-weight ratio of the structural units of propylene to alkene is in the range of from 99.8:0.2; and wherein, in the polypropylene copolymer, the repeating polymeric chain comprises at least 60 wt. % of structural units derived from propylene and from 0.1 to 40 wt. % of structural units derived from one or more alpha-olefin comonomers; iv) 2 to 15 weight percent, based on the weight of polymer solids in the dispersion, a functionalized polyolefin wax with an acid value in the range of 25 to less than 60; and v) a neutralizing agent which is an organic base or volatile base having a boiling point of less than 250 °C; and b) curing the composition by heating or allowing the composition to set to produce a cured film having a thickness in the range of 1 μm to 20 μm. a) applying onto a metal substrate a coating formulation derived from an aqueous dispersion composition comprising: i) 1 to 15 weight percent, based on the weight of polymer solids in the dispersion, a fatty acid dispersant of 14 to 60 carbon atoms with an acid value in the range of 60 to 250; ii) from greater than 25 weight percent to less than 70 weight percent, based on the weight of polymer solids in the dispersion, an acid functionalized propylene-based copolymer with an acid value in the range of 0.5 to 20 and a melting point at or above 130 °C as determined by DSC; wherein, in the propylene-based copolymer, the repeating polymeric chain comprises at least 60 wt. % of structural units derived from propylene and from 0.1 to 40 wt. % of structural units derived from one or more alpha-olefin comonomers; iii) 15 to 60 weight percent, based on the weight of polymer solids in the dispersion, a non-functionalized propylene-co-alkene base copolymer, wherein the weight-to-weight ratio of the structural units of propylene to alkene is in the range of from 99.8:0.2; and wherein, in the polypropylene copolymer, the repeating polymeric chain comprises at least 60 wt. % of structural units derived from propylene and from 0.1 to 40 wt. % of structural units derived from one or more alpha-olefin comonomers; iv) 2 to 15 weight percent, based on the weight of polymer solids in the dispersion, a functionalized polyolefin wax with an acid value in the range of 25 to less than 60; and v) a neutralizing agent which is an organic base or volatile base having a boiling point of less than 250 °C; and i) 1 to 15 weight percent, based on the weight of polymer solids in the dispersion, a fatty acid dispersant of 14 to 60 carbon atoms with an acid value in the range of 60 to 250; ii) from greater than 25 weight percent to less than 70 weight percent, based on the weight of polymer solids in the dispersion, an acid functionalized propylene-based copolymer with an acid value in the range of 0.5 to 20 and a melting point at or above 130 °C as determined by DSC; wherein, in the propylene-based copolymer, the repeating polymeric chain comprises at least 60 wt. % of structural units derived from propylene and from 0.1 to 40 wt. % of structural units derived from one or more alpha-olefin comonomers; iii) 15 to 60 weight percent, based on the weight of polymer solids in the dispersion, a non-functionalized propylene-co-alkene base copolymer, wherein the weight-to-weight ratio of the structural units of propylene to alkene is in the range of from 99.8:0.2; and wherein, in the polypropylene copolymer, the repeating polymeric chain comprises at least 60 wt. % of structural units derived from propylene and from 0.1 to 40 wt. % of structural units derived from one or more alpha-olefin comonomers; iv) 2 to 15 weight percent, based on the weight of polymer solids in the dispersion, a functionalized polyolefin wax with an acid value in the range of 25 to less than 60; and v) a neutralizing agent which is an organic base or volatile base having a boiling point of less than 250 °C; and b) curing the composition by heating or allowing the composition to set to produce a cured film having a thickness in the range of 1 μm to 20 μm.