First, the main raw material of white, gray rabbit fur, a variety of dyes, such as acyloxyethylaniline, gall powder, amino acid diphenol, washing powder, hydrogen peroxide, resorcinol, benzenediol, sulfite II Aminobenzene, coke catechol, 25% ammonia dichromic acid, sulfuric acid, salt, surfactants, turpentine and so on. Second, the production method of white or gray rabbit fur dyed black, first weighed potassium dichromate 3 ~ 5 grams / liter, sulfuric acid 1 gram / liter, salt 10 ~ -20 grams / liter, surfactant 1 gram / l; Formulated with a liquid active agent solution with a coefficient of 10, heated to 25°C to 28°C, soak the fur in a warming liquid for 3 to 4 hours, turn it around during the soaking process, remove and unscrew fur. The aqueous solution is then placed in a solution consisting of 10 g/l of sulfite and 10 to 20 g/l of salt. The temperature of the solution is maintained at 28°C to 35°C and soaked for 8 to 10 hours. . The soaked fur is rinsed with fresh water for 15-20 minutes at room temperature, and then placed in the dyeing jar immediately after being wrung out. Dyeing liquid in the tank: p-diaminobenzene 3 to 5 g/l, coke catechol 2 g/l, 25% ammonia 1 mg/l, washing powder 1 g/l. Thirty minutes after the fur was placed in the dyeing tank, 30% hydrogen peroxide (6 mg/L) was added to the solution. The temperature of the solution was maintained at 28° C.-35° C., dyeing for 3-6 hours, and the fur was frequently turned during the dyeing process. After dyeing, it is washed in an aqueous solution of 1 to 15 g/l washing powder. The temperature of the water is kept at 35°C, and it is continuously turned and then soaked in clean water for 30 minutes. Must be cleaned, if the diaminobenzene on the fur is not washed, it will damage human skin due to toxicity. The method of checking whether to wash is to take a piece of fur and put it in a small amount of water for washing. After 10 minutes, add a drop of 1% iron oxide. After 2 to 3 minutes, if blue green or green appears, the fur still needs to be cleaned once. After washing, weigh 10 g/L of yarn oil, 1 g/L of detergent powder, and 1 g/L of turpentine. Mix together and heat and stir until the temperature reaches 80°C and then cool to 45°C. The fur was soaked in the solution for 1 hour, and 40-60 g/L salt was added to the solution, often turning the fur. The total processing duration is 25 hours. After the dyeing, the fur is corrected. After drying the fur, rub it soft and comb the hair out. Third, the process activator soaking → dyeing → cleaning → salt leaching → renovation → drying → combing → finished products.
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