Low-cost Silica Based Matte Hardener

TC-70 Matting Curing Agent

Typical properties

Appearance Very fine pale yellow powder [visual]

Chemical equivalent weight (g/eq) 92 [calc.]

Herein described to be typical properties and do not constitute specification limits.

Matting Agent for Polyester/TGIC powder coatings

Characteristics

1. It Can provides low gloss of ca.10% (60°), exceptional flow and good mechanical properties such as direct impact for 

PES/TGIC based exterior durable powder coatings.

2. Curing @ 200℃(metal temperature) are required for both better flow and impact properties.

Use method & levels

1. TC-70 with other components of the formula before extrusion.

2. The use level is 1-5% by total weight of formulation, depends on the gloss required.

3. Ca. 1.1-1.2 parts of TGIC per weight part of TC-70 based on their chemical equivalent weights. Varying their total

 concentrations of in the formulation can control different gloss levels of coating when both ratios were retained at above

 fixedness.

Package & Storage

1. Packaging with PE lined Kraft paper bags. Net weight 25kg per bag.
2. Store in temperature between 2-32℃ or cool dry place. Keep away from heat and fire.
3. Based on our experience the shelf life of TC-70 under above conditions is at least 2 years.
4. Advisement

● When formulating TC-70, the gloss of coating will be determined by its concentration and the selected polyester resins.

 It is important to select matched resins.

● The powder coating formulated by TC-70 have a bit yellowing tendency and poor wet-thermal resistance.

Anticorrosion Pigments, Inkjet Receptive Coating, Matting Agent