Applications

LOCTITE® HHD 3597 – Reactive polyurethane hot-melt adhesive for high-impact device assembly applications

  • Item Name: LOCTITE® HHD 3597

  • Manufacturer: Henkel

  • Technologies: Polyurethane Hot Melt

  • Color: Black Solid

  • Cure Type: Solidification and Moisture

  • Package Size: Contact to Techniq VN for details.

  • Shelf Life: Contact to Techniq VN for details

1. Product Overview

LOCTITE HHD 3597 is a one-component, black polyurethane hot-melt adhesive that cures by solidification and moisture. It provides high impact strength after full curing and is designed for device assembly applications. The adhesive offers rapid handling strength and develops final strength over 1–5 days depending on environmental conditions.


2. Applications

  • Device assembly

  • Structural bonding in electronic devices

Note: Not recommended for pure oxygen or oxygen-rich systems, nor for bonding with chlorine or strong oxidizers.

3. Typical Properties

Property Value
Technology Polyurethane Hot Melt
Appearance Black Solid
Solids Content 100%
Components One-part, requires no mixing
Viscosity (Brookfield RV DV-II, 100°C, mPa·s) 6,000
Density @ 25°C, g/cm³ 1.1
Open Time @ 25°C, minutes 1–2
Preheating Schedule 20–30 mins @ 100°C
Application Temperature, °C 90–110
Cure Mechanism Solidification and Moisture
Cured Strength Lap Shear Strength (Glass to SUS), ISO 4587: 8.5 N/mm² (1,230 psi)
Handling Strength High immediately after bonding
Full Cure 1–5 days, depending on conditions
Storage Temperature 5–25°C

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