Körapur® 689

Identification

Chemical Family

Polyurethanes (PU)

GBU

EA

RTU Product Type

2K (2 component) Coating,

Base Coat,

2K (2 component) Adhesive,

Reactive Adhesive

Categories

Markets → Automotive & Transportation → Applications → Transportation → Commercial

Markets → Building & Construction → Applications → Flooring & Surfaces → Floor Coatings

Technologies → Adhesives & Sealants → Product Families → Bonding Technology → 2K Liquid Reactive Adhesives

Technologies → Ready-to-Use Products → Product Families → Paints & Coatings → Base Coats & Undercoats

Application Information

Cure Method

Chemical Cure

Applications

Application Area

Containers,

Floor,

Truck,

Buses,

Caravans,

Refrigerated Vehicle,

Sealing Application

Application Method

Trowel,

Pour

Compatible Substrates & Surfaces

Wood,

Concrete,

Aluminum Alloys,

Carbon Fiber Reinforced Plastics (CFRP),

Alloy Steel,

Glass Fibre Reinforced Polymer (GFRP)

Applications & Uses

Processing Information

Preparation

• For some substrates the use of mechanical pretreatment and/or cleaner or primer is necessary to achieve good adhesion. Refer to the product properties section of this data sheet for special surface requirements and suitable adhesion promoters.

Processing

• Low temperatures can cause a temporary increase in viscosity resulting in reduced extrusion and slower curing rates.

Features

Ready-to-Use Product Features

Incidental Food Contact Acceptable

Features & Benefits

Labeling Claims

Plasticizer-free,

Solvent-free

Product Features

Particularly suitable for fresh service, meat, fish and deepfreeze vehicles (tested down to -30°C)

Packaging & Availability

Regional Availability

• Asia Pacific
• Europe
• North America
• Latin America
• India/MiddleEast/Africa (IMEA)

Properties

Processing Properties

	Value	Units	Test Method / Conditions
Density	1.4	g/cm³	DIN EN 542
Glass Transition Temperature	40	°C	DIN EN ISO 6721-1
Hardness	70	Shore D	DIN EN ISO 868
Mixing Ratio (Part A : Part B)	3.3 : 1	v%	-
Mixing Ratio (Part A : Part B)	4.0 : 1	wt %	-
Pot Life (at 23°C)	40	min	Kö-test method 100172
Processing Temperature	15 - 25	°C	-
Service Temperature	- 160 to 90	°C	-
Viscosity (at 20°C, Uncured Mixture)	2700	mPa·s	Kö-test method 100003

Component B

	Value	Units	Test Method / Conditions
Density	1.23	g/cm³	DIN EN 542
Isocyanate Content	31	%	-
Processing Temperature	15 - 25	°C	-
Storage Temperature	5 - 35	°C	-
Viscosity	150	mPa·s	Kö-test method 100000

Component A

	Value	Units	Test Method / Conditions
Density	1.5	g/cm³	DIN EN 542
Storage Temperature	10 - 25	°C	-
Viscosity (at 20°C)	12000	mPa·s	Kö-test method 100000

Storage & Handling

Storage Information

Körapur® 689 should be used within the shelf life specified on the packaging. The storage stability applies to material stored under appropriate conditions only (original unopened containers, recommended storage temperature).

Technical Details & Test Data

Processing Information

Suitable Substrates	Various aluminium alloys Various steel alloys Various composite materials (e.g. CFRP, GFRP) Concrete Wood Various other substrates
Consistency	Pourable
Surface Requirements	Clean Free of grease Free of dust, Dry
Application Method	Manual mixing and application With notched trowel Pouring
Product is free of	Solvents Plasticizers

• Cleaner for Tools Körasolv® PU

Hints

• Resistance against UV Radiation - Körapur® 689 is not UV-resistant, discolouration is possible.
• Moisture Sensitivity  - The adhesive must not be exposed to moisture before and during application.
• Supplementary Guidelines - For more detailed processing guidelines, please contact your local technical representative