Method for effectively preventing the generation of polyester dyed oligomers

There is a disturbing problem in the dyeing of polyester "white powder", the following aspects can be considered:

1. High temperature drainage, mechanical conditions can not be reached.

2. Oligomer remover, not easy to use.

3. Change the raw materials, this cost base can not take over.

4. Alkaline dyeing can meet the requirements of alkaline dyeing, and can make the dyeing liquid more than 10, and the application process is also mature.

5. Carrier staining. Can reduce the dyeing temperature, generally non-environmental carrier, the cost is not high, but the environmentally friendly type may cost more. For example, the dyed polyester product, the carrier one-step method, the cost is low, and the equipment does not need high temperature and high pressure.

6. Cleaning equipment to prevent contamination.

7. The washing of the dark product utilizes a reducing agent to wash not only the oligomer but also the floating color.

8. Adding a hydrophilic agent and a high-efficiency hand-carrying agent, the hydrophilic agent can have a hydrophilic and soft effect, and the high-efficiency breaking agent can be used as a leveling agent, but the use may be unsuitable.