What are the chemical raw materials used in leather processing?

① Raw skin treatment materials: Raw skin treatment includes chemical materials used for fresh skin preservation, dry skin preservation, soaking, degreasing, liming, pickling and hair removal.

(2) Tanning materials: Any chemical agent that can increase the shrinkage temperature of hides and make them into leather is called tanning agent.

(3) Dyeing: Dyeing is an important process in leather production. Dyeing can give leather a variety of bright and firm colors and improve the performance of leather.

④ Lubricating and fatliquoring materials: Leather fatliquoring is an important process in leather production. The chemical material used for leather fatliquoring is lubricating fatliquoring material, which is usually called fatliquoring agent.

⑤ Coating material: Leather is a processed product of various animal skins. In order to cover up the original defects of raw leather and enhance its durability, leather finishing materials were developed.

⑥ Functional finishing materials: Functional finishing materials are used to make up for the defects of leather after tanning and finishing or to improve and increase some characteristics.

⑦ Fur material: The fur production process includes preparation process, tanning process and finishing process.