Formulation — Process Challenge

機能性フィラー・エクステンダー(塗料用)

エクステンダー・機能性フィラーは配合コストを削減し、隠蔽性・光沢・補強性を調整しつつ性能を維持—PVC対CPVCの管理が鍵となる
Updated Jun 2026
ソリューションアプローチ

RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.

Typical Formulation Workflow
1
System & Substrate Assessment
Define the binder system (waterborne, solventborne, UV, powder), substrate, cure, and the VOC, durability, and appearance targets.
2
Additive & Resin Selection
Match resins, pigments and fillers, dispersants, rheology modifiers, defoamers, or biocides to the formulation and compatibility window.
3
Lab Let-Down & Optimization
Dial in loading and addition order through lab let-downs, checking dispersion, rheology, film properties, and storage stability.
4
Application & Performance Testing
Validate on the real application method and substrate, tracking gloss, adhesion, sag, cure, and weathering before scale-up.
Recommended Chemistries (6)
Calcium Carbonate
CAS 471-34-1
無機フィラー・顔料
Primary extender pigment
Low-cost extender that builds volume solids and controls sheen, spacing TiO2 to improve hiding efficiency per dollar
融点:825–1339 °C (Decomposes)   沸点:Decomposes   密度:2.7 to 2.95
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Kaolin (china clay)
CAS 1332-58-7
無機フィラー・顔料
増粘 / レオロジー
Platy aluminosilicate extender that boosts dry hiding and holdout while partially replacing prime pigment
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Nepheline syenite
CAS 37244-96-5
無機フィラー・顔料
増粘 / レオロジー
Hard, low-oil-absorption mineral extender that raises solids and abrasion resistance with minimal viscosity penalty
Physical Description: 液体
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Talc
CAS 14807-96-6
無機フィラー・顔料
コンディショニング
Lamellar magnesium silicate that improves sag control, sanding, and film reinforcement as a functional extender
融点:927–982 °C   密度:2.7 to 2.8   Solubility: < 1 mg/mL at 21 °C
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Titanium Dioxide
CAS 13463-67-7
無機フィラー・顔料
Primary white pigment for opacity
High-refractive-index prime pigment providing the hiding power that extenders are spaced around to optimize cost
融点:1860 °C (decomposes)   沸点:2500–3000 °C at 760 mmHg   密度:3.9 to 4.2
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Mica
CAS 12001-26-2
無機フィラー・顔料
増粘 / レオロジー
Genuine low-cost lamellar extender pigment used precisely for filler-loading cost optimization: spaces/extends TiO2, reinforces film, reduces cracking and moisture permeability, and controls sheen at a fraction of TiO2/binder cost. Directly serves this exact use-case.
融点:1500 °C   密度:2.6 to 3.2   Solubility: Insoluble
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