▎ 摘　　要

NOVELTY - Method comprises softening, removing iron, pre-tanning, neutralizing, tanning, oiling and post-processing, adding water, salt, diethylenetriamine, pentaacetic acid, N-benzoyl phenyl hydroxylamine, 2-hydroxy propionic acid and halogen-free hydrocarbon solvent degreasing agent, rotating, draining and water washing, adding water and acid enzyme in drum, rotating, adding sodium formate and sodium sulfate, pre-tanning, adding warm water in drum, montmorillonite, graphene, auxiliary tanning agent and protein filler, rotating, washing, neutralizing, adding sodium thiosulfate in drum, adding sodium formate, sodium bicarbonate, adding plant oil in drum, replacing tannin, acrylic resin tanning agent, synthetic tanning agent, emulsifying beef, tallow, rotating, allowing to stand, adding formic acid in drum, washing with water, oiling, adding warm water in drum, hoof beef oil, melamine, rotating, adding water, mildew preventive and cationic oil for water washing, discharging and allowing to stand. USE - The method is useful for preparing tanning shoe bottom leather. ADVANTAGE - The leather: has excellent waterproof performance and wear-resistant, and is environmentally-friendly (all claimed). DETAILED DESCRIPTION - Preparing tanning shoe bottom leather comprises softening, removing iron, pre-tanning, neutralizing, tanning, oiling and post-processing, adding water, salt, diethylenetriamine, pentaacetic acid, N-benzoyl phenyl hydroxylamine, 2-hydroxy propionic acid and halogen-free hydrocarbon solvent degreasing agent, rotating, draining and water washing, adding water and acid enzyme in drum, rotating, adding sodium formate and sodium sulfate, pre-tanning, adding warm water in drum, montmorillonite, graphene, auxiliary tanning agent and protein filler, rotating, washing by water, draining, neutralizing, adding sodium thiosulfate in drum, adding sodium formate, sodium bicarbonate, adding plant oil in drum, replacing tannin, acrylic resin tanning agent, synthetic tanning agent, emulsifying beef, tallow, rotating, allowing to stand, adding formic acid in drum, washing with water, oiling, adding warm water in drum, hoof beef oil, melamine, rotating, adding water, mildew preventive and cationic oil for water washing, discharging and allowing to stand.