ENTHONE 77
Harmonization Code : 3909.20.00.90 | Amino-resins, phenolic resins and polyurethanes, in primary forms : Melamine resins : Other

Main features
- Ambient or Heat-Cure Choice
- One-Hour Ink Pot Life
- Heat-Enhanced Adhesion Development
Product Description
ENTHONE Catalyst 77 is an adhesion-promoting catalyst component for ENTHONE M-Series and 50-Series epoxy marking inks. It supports room-temperature or heat cure, with an average catalyzed-ink pot life of 1 hour after induction. At room temperature, the ink cures in 5 to 7 days; maximum adhesion is achieved with heat cure at 65.6 to 93.3 deg C. Catalyst 77 is used within matched ENTHONE ink systems for permanent markings on semiconductor components, printed circuit boards, connectors, dials, glass, metal, and thermosetting plastics.
Key features
- Ambient or Heat Cure: Catalyst 77 supports room-temperature processing or controlled thermal cure.
- One-Hour Pot Life: The catalyzed ink has an average 1-hour working pot life after induction.
- Adhesion-Promoting Cure: Heat cure at 65.6 to 93.3 deg C develops maximum adhesion in the matched ink system.
Applications / Suitable for
- ENTHONE M-Series epoxy marking inks
- ENTHONE 50-Series epoxy marking inks
- Permanent semiconductor and circuit-board marking systems
TDS, SDS & Technical Documents
Technical Specifications
No specifications available.
Additional Information
As-supplied / before-processing properties
Typical catalyst and catalyzed-ink processing data. Final properties belong to the selected ink, color, catalyst ratio, and cure schedule.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Catalyst function | Adhesion-promoting | - | For ENTHONE M-Series and 50-Series epoxy marking inks |
| Cure mode | Room temperature or heat | - | Catalyst 77 |
| Average pot life | 1 | hr | Catalyzed ink; begins after induction period |
| Room-temperature cure | 5 to 7 | days | Catalyzed ink system |
| Maximum-adhesion heat cure | 65.6 to 93.3 | deg C | 150 to 200 deg F |





















