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    Qingdao Hengda Chemical New Material Co., Ltd.

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    Room 2-302D, Hisense Wealth Valley, No. 88, Zhuzhou Road, Laoshan District, Qingdao, Shandong, China

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    Gaizhou Hengda Chemicals Co., Ltd.

    Shandong Hengda Silicon Material Technology Co., Ltd.

Knowledge

Improving Filler Dispersion in High-Solids Coatings

21 - May - 2025 HENGDA Group

Dispersion Mechanism

Bis(triethoxysilylpropyl) disulfide acts as a molecular dispersant through:

Hydrolysis-generated silanols anchoring to filler surfaces (TiO₂, SiO₂)

Disulfide (-S-S-) bonds providing steric stabilization

Organic chains compatibilizing with resin matrices

Formulation Optimization

Parameter Standard Formulation Silane-Optimized

Viscosity (KU) 95 62

TiO₂ Loading 28% 35%

Hiding Power (m²/L) 14.5 18.2

Production Benefit

A Sherwin-Williams industrial coating plant achieved 22% reduction in milling time and 15% cost savings per batch through this technology.


Improving Filler Dispersion in High-Solids Coatings