KOBOND™ 4013 — Reactive Polyester Adhesion Promoter

Product Overview

KOBOND™ 4013 is intended primarily for thermosetting coating systems and is compatible with melamine-crosslinked resins. It promotes adhesion to aluminum, zinc, stainless steel and electroplated surfaces. The supplied TDS also describes improvements in flexibility, impact resistance, water and salt-spray resistance, and color stability during baking.

Key Features

• Promotes adhesion to difficult metal substrates.
• Can improve flexibility and impact resistance.
• The TDS reports water- and salt-spray-resistance benefits without numerical test conditions.
• Compatible with melamine-crosslinked systems and supports color stability during baking.

Physical Properties

Selected values from the original TDS. Refer to that document for conditions and whether values are typical or specification limits.

Typical Applications

• Acrylic/melamine, alkyd/melamine and polyester/melamine baking coatings on metal substrates.
• Two-component polyurethane coatings on aluminum, zinc, stainless steel and electroplated surfaces.

Technical Considerations

The recommended dosage is 0.1–5.0% based on the total formulation. Determine the optimum addition level through laboratory trials. The TDS does not recommend this product for air-drying coating systems.

Reported properties are typical, not specifications. Keep tightly closed in a cool, dry, ventilated place. The stated unopened shelf life is 24 months from manufacture. Refer to the current SDS before handling.

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