Abstract: A water-based coil coating without amine neutralization includes the following components in percent by weight: an amine-free waterborne resin: 88-93%, a crosslinking resin: 4-9%, a first auxiliary: 0.5%, a second auxiliary: 0.5%, a third auxiliary: 2.0%, and a diluent. A solid content in the water-based coil coating is greater than 40%. A solid content ratio of the amine-free waterborne resin to the crosslinking resin is in a range of 4-9. The water-based coil coating does not include amine neutralizing agents, not only possesses performance equivalent to or even exceeding that of oil-based coatings, but also greatly reduces VOC emissions, allowing for direct exhaust of tail gases. Wastewater treatment is extremely simple, and there is no pollution from ammonia nitrogen and nitrogen oxides. Downstream coating enterprises have a very high acceptance of the water-based coil coating without the amine neutralization.

Abstract: A water-based coil coating without amine neutralization includes the following components in percent by weight: an amine-free waterborne resin: 88-93%, a crosslinking resin: 4-9%, a first auxiliary: 0.5%, a second auxiliary: 0.5%, a third auxiliary: 2.0%, and a diluent. A solid content in the water-based coil coating is greater than 40%. A solid content ratio of the amine-free waterborne resin to the crosslinking resin is in a range of 4-9. The water-based coil coating does not include amine neutralizing agents, not only possesses performance equivalent to or even exceeding that of oil-based coatings, but also greatly reduces VOC emissions, allowing for direct exhaust of tail gases. Wastewater treatment is extremely simple, and there is no pollution from ammonia nitrogen and nitrogen oxides. Downstream coating enterprises have a very high acceptance of the water-based coil coating without the amine neutralization.