Körapur® 784 is a two-component, solvent-free polyurethane adhesive designed for use in the building and automotive industries. The product is specifically used for bonding ABS, rigid PVC, GRP, steel, and aluminum without the need for any solvents in the reaction process.

Product Type: 2K (2 component) Adhesive, Reactive Adhesive

Compatible Substrates & Surfaces: Acrylonitrile Butadiene Styrene (ABS), Aluminum, Metal, Plastics, Polyvinyl Chloride (PVC), Steel

Chemical Family: Polyurethanes (PU), Urethanes

Features: Fast Setting, Good Toughness

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Features & Benefits

Labeling Claims
Ready-to-Use Product Features

Applications & Uses

Processing

Processing temperature: 15°C to 25°C

  • Preparation:

The surfaces must be clean, dry and free of grease. Metals must normally be pretreated and possibly sanded. Surfaces of glass fiber-reinforced plastics must also be sanded. Resin and hardener must be thoroughly mixed with a stirrer (approx. 400 revs/min) until the mixture shows a uniform color. Prepare tandem cartridge as instructed.

  • Bonding:

Apply adhesive evenly with a spatula or a doctor blade to the surfaces and join them. The thickness of the adhesive layer depends on the properties of the materials to be bonded. By different A-components, the pot life and the bond strengths can be varied. When using Körapur 784, the bond can be exposed to light strain after 12 hours. Final bond strength is reached after 24 hours. High temperatures will shorten the curing time, low temperatures will lengthen it.

A-component Pot life

Handling time after

Körapur 784/5 5 minutes 1-2 hours
Körapur 784/1 1 minute 15 minutes
  • Cleaning: Körasolv PU

Clean tools immediately after use. Cured adhesive can only be removed mechanically.

Properties

Component A
ValueUnitsTest Method / Conditions
Viscosity40000.0mPa·sBrookfield RVT
Density1.2g/cm³DIN 53 479
Component B
ValueUnitsTest Method / Conditions
Viscosity20000.0mPa·sBrookfield RVT
Density1.6g/cm³DIN 53 479
Technical Data
ValueUnitsTest Method / Conditions
Mixing Ratio (by weight)1:1.3--
Pot Life2023-05-01minKö-Standard 52 102
Shear Strength13.0N/mm²DIN EN 1465
Hardness65.0-DIN 53 505, Shore D

Safety & Health

Precautions

When processing Körapur 784 avoid direct skin contact with the uncured adhesive. Wear protective gloves. Hazardous fumes may form when the product is heated or sprayed.

Packaging & Availability

Packaging Type
Regional Availability
  • Asia Pacific (Excluding Russia)
  • Australia
  • Canada
  • China
  • Europe (Excluding Russia)
  • Japan
  • Korea
  • Latin America
  • Malaysia
  • North America
  • Philippines
  • USA
Packaging Information
  • 50 ml Tandem cartridge (2 pieces per packaging unit) with static mixer
  • 400 ml Tandem cartridge with static mixer

Storage & Handling

Shelf Life
12 Months
Storage Condition

Do not store below 10°C