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  • What is the effect of pH on the levelling properties of nylon?

    2021-11-09

    When dyeing nylon fiber, when the pH value of the dyeing solution is relatively high, the dye is rarely dyed; when the pH value of the dyeing solution drops to a certain value, the dye starts to be dyed, and soon reaches saturation. Continue to reduce the pH value of the dyeing night , The dye uptak Read More

  • What are the comprehensive reasons for the production of colored flowers in dyeing?

    2021-10-05

    Unreasonable formulation of the process or improper operation produces color fretting;The process is unreasonable (for example, the temperature rises and falls too fast)Poor operation, knotting during dyeing, and power outage during dyeing;The temperature rises too fast and the heat preservation tim Read More

  • What is the composition of the substitute alkali for reactive dyes?

    2021-09-21

    The representative product of the substitute alkali for the phosphate system is Alkaflo developed by Sybron. The Morran patent provides a specific method for the substitute alkali for this system, and different raw materials can be used to prepare lye with different pH values. The main components of Read More

  • Which PH value is required for water in dyeing process?

    2021-02-08

    For reactive dyeing, when the pH value is 7-9, the color difference of the product is normal, indicating that the pH range has little effect on the color difference of the product, and the presence of a small amount of alkali will not change or destroy the chromogenic group of the reactive dye molec Read More

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