- Adhesives
Desmocoll® 621/1
Predominantly linear, flexible hydroxyl polyurethane with a high crystallisation rate and low thermoplasticity. Good adhesion on PVC substrates. Suitable to formulate adhesives with a long tack life.
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About
Product Types
- PU resin
Material
- Adhesives
- Solventborne, Heat activated
General Characterization
Desmocoll 621/1 is a predominantly linear hydroxyl polyurethane.
Desmocoll 621/1 is a flexible polyurethane with a high rate of crystallization and low thermoplasticity. It has good adhesion on many flexible PVC substrates. Desmocoll 621/1 is characterized in particular by its long tack live after thermal activation.
Desmocoll 621/1 is a flexible polyurethane with a high rate of crystallization and low thermoplasticity. It has good adhesion on many flexible PVC substrates. Desmocoll 621/1 is characterized in particular by its long tack live after thermal activation.
Storage Conditions
Desmocoll 621/1 should be stored in tightly sealed original containers and protected from direct sunlight, moisture, heat, and foreign materials. Recommended storage temperature is 10º-25ºC.
Sampling
No data available
Packaging Type
No data available
Technical Properties & Datasheets
Characteristics
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| Hydroxyl content | % | < 0.1 | |
| Crystallization | h | approx. 2 | |
| Hot tack life | min. | approx. 8 | |
| Bondability of materials containing plasticizers | Very good | ||
| Density | g/ml | approx. 1.2 | |
| Minimum activation temperature | °C | approx. 55 | |
| Heat resistance | °C | approx. 70 |
Specifications
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| Solution viscosity , 15% inbutanone-2 (MEK)at 23°C, Haake | mPa∙s | 1,500 - 2,100 |
Downloads
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Technical Data Sheet
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Safety Data SheetNo direct download available, please visit www.productsafetyfirst.covestro.com
