Desmocoll® 621/0 by Covestro is a linear, flexible hydroxyl polyurethane. Possesses high rate of crystallization, low thermoplasticity and long tack live after thermal activation. Has good adhesion on many flexible PVC substrates. Is soluble in butanone-2, acetone, acetone/toluene (2:1), and MEK/ethyl acetate (1:1). Desmocoll® 621/0 is suitable for the formulation of adhesives for use on various materials such as leather, rubber, textiles, wood, various plastics (including polyurethane elastomers), plastic films and aluminum foils.
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Desmocoll® 621/0 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 Time | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Density | 0.0 Visible After Login | Visible After Login | Visible After Login |
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| Hot Tack Life | 0.0 Visible After Login | Visible After Login | Visible After Login |
| Hydroxyl Value | 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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