Titanium dioxide for synthetic leather production

Recommended choices in the field of synthetic leather
1. Scenarios where chloride-based titanium dioxide is preferred
High-end synthetic leather (such as automotive interiors, luxury packaging materials, and outdoor furniture leather):
If high weather resistance (UV resistance, anti-yellowing), high whiteness and glossiness are required, chloride-based rutile titanium dioxide is the first choice.

Light-colored/high-whiteness synthetic leather:
The blue phase whiteness of chloride-based titanium dioxide is better, which can reduce the amount of fluorescent brighteners.

Regions with strict environmental protection requirements (such as the European Union and North America):
The chloride process is more in line with REACH, RoHS and other regulatory requirements.

2. Scenarios where sulfuric acid-based titanium dioxide can be considered
Mid- and low-end synthetic leather (such as ordinary shoe materials and low-priced luggage):
When cost-sensitive, sulfuric acid-based titanium dioxide is more cost-effective.

Dark-colored or synthetic leather with low covering requirements:
If the amount of titanium dioxide added in the formula is small (such as <5%), sulfuric acid-based anatase titanium dioxide can be used.

Non-outdoor use:
For indoor furniture leather and other scenes that do not require high weather resistance, sulfuric acid products can meet the needs after surface treatment.

 Precautions
Dispersion optimization:
Sulfate-based titanium dioxide needs to be matched with more dispersants, otherwise it is easy to cause the surface of synthetic leather coating to be rough.

Process adaptability:
Chloride-based titanium dioxide is more suitable for dry PU leather (high-temperature calendering process).
Sulfate-based titanium dioxide can be used for wet PU leather (the effect of acid residue on the coagulation bath needs to be controlled).