Desmocoll® 621/1 by Covestro is a predominantly linear hydroxyl polyurethane. Used in the formulation of heat activated, solvent-borne adhesives for use on various materials like leather, rubber, textiles, wood, various plastics (including polyurethane elastomers), plastic films and aluminum foils. Offers benefits such as high rate of crystallization, low thermoplasticity, good adhesion on many flexible PVC substrates and long tack live after thermal activation. Desmocoll® 621/1 has a recommended storage temperature of 10-25 °C.
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Desmocoll® 621/1 properties
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| Properties | Value & unit | Test condition | Test method |
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| Activation Temperature | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Crystallization | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Density | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Heat Resistance | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Hot Tack Life | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Hydroxyl Content | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Viscosity | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Solubility Properties | Element | Condition | Method |
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