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Description:
Matt Hardener XG628 is made for outdoor powder coatings. It has good weather durability, and can be applied in TGIC/polymer system or other similar curing systems. Coatings formulated with XG628 can produce a gloss range from 8% to 40% @ 60 angle with good flow.
Technical data:
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Use level
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90-110 PHR (based on unreacted epoxy compound)
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Appearance
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Pale yellow powder
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Curing condition
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190℃/15min;200℃/12min
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Application:
1. In the formulation, the ratio of TGIC to polyester should be unbalanced to provide excess TGIC for reaction with XG628.
2. Polyester to react with TGIC may be divided into 3 ratios/type viz. 96:4 (AV: 20), 93/7 (AV: 35) and 90/10 (AV: 50). In low gloss coating based on XG628, we recommend either the 96/4 or 93/7 ratio.
3. The dosage of XG628 inthe range of 90-110 PHR is based on the excess TGIC. Benzoin or hydrogenated caster oil could be used to degas the film and improve the flow.
Suggested formulations:
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DSM P5201
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50.2wt%
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TGIC
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7.7wt%
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XG628
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3.8wt%
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R902
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20.6wt%
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BaSO4
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16.2wt%
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GLP588
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1 wt%
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Benzoin
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0.3wt%
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HCO
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0.2wt%
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Packaging:
Available in polyethylene-lined, multi-ply paper bags, N.W. 25KGS/Bag.
Storage and Handling:
Store in cool and dry place; keep away from fire; wash with water after operation.
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