Accessory ingredient capable of removing and avoiding generating hexavalent chromium in leather and preparation method of accessory ingredient

Abstract

The invention relates to an accessory ingredient capable of removing and avoiding generating hexavalent chromium in leather and a preparation method of the accessory ingredient, belonging to the technical field of chemical product manufacture. The accessory ingredient is mainly and technologically characterized by being prepared from raw materials including a reducing agent, an antioxidant, a dispersing agent, a masking agent and a pH value regulator. The reducing agent mainly comprises the following components: sodium sulfite, sodium hydrogen sulfite, sodium hyposulfate, sodium pyrosulfite and glucose; the antioxidant comprises the following components: sulfonated tannin extract, sulfited tannin extract, tea polyphenol, gallic acid, ellagic acid, vitamin C and vitamin E; the dispersing agent comprises the following components: an auxiliary naphthalene sulfonic acid synthetic tanning agent and an auxiliary phenolsulfonic acid synthetic tanning agent; the masking agent mainly comprises the following components: sodium formate, sodium acetate and sodium citrate; and the pH value regulator comprises the following components: citric acid and oxalic acid. The accessory ingredient is prepared through grinding, crushing and uniformly mixing. The accessory ingredient is few in raw material component, simpler in preparation method, free of pollution and capable of thoroughly removing and avoiding generating hexavalent chromium in leather.

Description

1. Technical field

[0001] The invention relates to the preparation of fine chemical products and the production of ecological leather, an auxiliary agent for removing hexavalent chromium in leather, in particular to an auxiliary agent capable of removing and preventing the formation of hexavalent chromium in leather and a preparation method, which belongs to chemical products field of manufacturing technology. 2. Background technology

[0002] Chromium usually exists in two forms of positive trivalent and positive hexavalent, and its valence state is different, and its impact on the environment and biological effects are also different. It is believed that trivalent chromium is a trace metal element necessary for the human body and organisms, while hexavalent chromium, which is more easily absorbed by the human body than trivalent chromium, is a carcinogen, and the toxicity of hexavalent chromium is more than 100 times greater than that of trivalent chromium.

[0003] In th...

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