What is the Dye migration of the leveling agent?

Dye migration is a process in which the leveling agent re-disperses the high dye concentration part of the dyed fabric into the dye bath, and then dyes the low dye concentration part. Dye migration is an important performance of the disperse dye repair agent. .

Regarding migration, the following methods are generally used for testing:

1. Experimental materials:

Dyed polyester fabric: red (Un-se Red 0.5%) + yellow (Un-se Yellow 0.8%) + blue (Un-se Blue 0.5%) + undyed polyester fabric each, four fabric sheets Edge stitching forms a set.

formula:

Levelling agent x g/L

pH 4.5-5

Bath ratio 1:20

2. Experimental technology:

Dyeing at 40°C, heating to 130°C for 30min, transfer dyeing for 60min, take out the cloth sample, wash with water and dry.

3. Result evaluation:

The closer the color of each color sample in the combination after migration, the better the migration effect.

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