MaxMatt-9L Matting Agent for Polyester/Epoxy Powder Coatings

MaxMatt-9L is a cost-effective, carboxylated-acrylic chemical matting agent designed for polyester/epoxy hybrid powder coatings.

It provides strong matting performance together with good storage stability, impact resistance, scratch resistance, and it is compatible with subsequent waterborne topcoat application.

Key Features:

• Excellent matting: minimum 3 GU @ 60°
• Mechanism: chemical-matte mechanism; recommended ratio matting agent : epoxy
  (EEW ~833 g/eq) = 1 : 3
• Appearance: flat and smooth film with high fullness, deep blackness, and stain resistance
• Storage stability: gel time 3 ′ 00 ″ – 3 ′ 30 ″ ; finished powder shows very good storage stability.
• Impact resistance: ±50Kg.cm, excellent delayed impact performance
• Scratch resistance: higher crosslink density yields greater hardness and scratch
  resistance than traditional chemical matting agents.
• Cost advantage: higher epoxy usage in the formula offers a notable cost benefit when epoxy prices are low.
• High pigment/filler loading: compared with high-m.p. X68-type agents, MaxMatt-9L’s higher resin content allows more pigment/filler without sacrificing appearance.
• Other: Waterborne topcoat compatibility
• Low cross-contamination when used alongside X68-type matting agents
• Color stability: outstanding color stability.
• Low sensitivity to oven temperature; minimal contamination to high-gloss powders baked in the same tunnel
• Adjustable gloss: tune gloss by adjusting MaxMatt-9L dosage and the corresponding epoxy consumption, with no loss of performance
• Mechanical properties & adhesion: excellent, ≥50 kg·cm (direct/reverse)
• Broadly compatible with polyester resins; particularly well-suited to 60/40
  polyester/epoxy matte hybrids
• Re-extrusion: supports re-extrusion of off-spec/expired powder

Reference Formulations (parts by weight):

＊Impact (±) indicates direct and reverse impact.

• Adjust epoxy dosage in each formulation to optimize mechanical properties.
• Adjust pigment/filler levels as needed; increasing filler generally aids matting—prefer matting-grade fillers, such as Natural BaSO4.
• The above formulation is for reference only. If a waterborne clearcoat will be applied, use a 50/50 polyester/epoxy hybrid.
• Avoid accelerators or catalytic pigments/fillers; they typically raise gloss and may
  impair leveling.

Typical Properties:

• Appearance: White or light-yellow powder
• Equivalent Weight (reference): ≈278

Application:

• Pre-mix and Co-extrusion [One-Shot]

Storage:

• Shelf life: at least 12 months、≤27 °C in a dry, moisture-proof environment.
  

Safety and Caution:

• Follow general safety practices for powder-coating additives.
• Unless otherwise noted, ZEHM products are manufactured without intentionally
  added heavy metals and without oxidizing or explosive substances.
• Use appropriate PPE to avoid ingestion, inhalation, or skin contact.