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Why does Pale Shade Effect. appear? How to solve the problem?

Date:2016-03-29

Q: Why does Pale Shade Effect. appear? How to solve the problem?

A: Pale Shade. Effect is the situation that when some types of anionic retanning agents are applied, the dyestuffs have a poor uptake which leads to pale color of the leathers. Pale Shade. Effect may attribute to:

1.the anionic retanning agents applied are prone to produce Pale Shade;

2. the formulation is improper;

3. dosage of anionic retanning agents is too large. The followings can help solve the problem:
1. choose the anionic retanning agents with weaker Pale Shade effect;
2. try to optimize the retanning and dyeing formulations.

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