Posts

Showing posts with the label sequestering agent in textile processing

Scouring Agent in Textile

Image
Definition of scouring agent in textile Scouring in textile refers to a large number of auxiliaries with functions of emulsifying, penetrating, washing, dispersing and wetting in the scouring process before dyeing and printing, in order to remove oil stains and impurities from the textile fibers. The common scouring agents include sizing agent, lubricating agent, oil stains agent, alkali-resistant agent, mercerizing agent, wax removing agent, penetrating agent and so on. The required property of scouring agent varies depending on materials, fabric structure, stains and applications. Scouring agent is a non-toxic, tasteless, pollution-free white powder, soluble in water whose aqueous solution is alkaline, capable of cleaning, emulsification, dispersion, wetting, penetration and the pH buffering. It belongs to the inorganic alkali products, easily hygroscopic when placed in the air, sometimes there existing a little bit block, which is a normal phenomenon with no effect on quality. ...

Sequestering Agents

Image
  Definition of sequestering agent Sequestering agent, also known as chelating agent, is a complex forming auxiliary chemical with metals such as Iron, Copper, Nickel, Zinc and Magnesium that are present in water and affects the textile processing in many way.   Functions of sequestering agent in textile process 1. Applications of sequestering agent in textile industry 1) Desizing Adding sequestering agent into whatever kind of desizing agent can improve the efficiency of desizing. This is because it complexes metal ion that reacts with size, improving swelling capacity of size membrane and reactivity of  size and sequestering agent. Thus it is easy to be removed from fabrics.   2) Pretreatment Mainly use stabilizing agent for hydrogen peroxide bleaching to make hydrogen peroxide resolve smoothly and then improve usage rate of it; at the same time cause the fracture of fabric fiber and form holes. 3) Dyeing Water, glauber salt, sodium carbonate, sodium chloride and e...