Covestro Desmomelt® 540/2 Polyurethane

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Covestro Desmomelt® 540/2 Polyurethane
Categories:	Polymer; Thermoset; Polyurethane, TS
Material Notes:	Characterization: Desmomelt® 540/2 is a flexible polyurethane with a very high rate of crystallization and very low thermoplasticity. Extruded flat products made from this raw material (hot melt adhesive films and fleeces) are of high quality. Desmomelt® 540/2 has outstanding adhesion on a large number of materials. It has high initial bond strength and thermal stability. Properties / Applications Desmomelt® 540/2 is suitable for the manufacture of adhesive films and fleeces for bonding many different materials, e.g. leather, textiles, wood fibreboard, various plastics including polyurethane elastomers and flexible PVC. Information provided by Covestro
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Physical Properties	Original Value	Comments

Specific Gravity	1.20 g/cc	DIN 53 479
Viscosity	500 - 1000 cP	Solution viscosity, 15 % in butanone-2 (MEK) at 23 °C Haake RV 12/20 MV-DIN alternative Brookfield LVF; ISO 3219

Descriptive Properties
Content	<0.1	Hydroxyl, DIN 53 240
Crystallization	10 min	DIN 53 505
Heat resistance	80°C	ASTM D 816

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PCOVEST0681 / 202464

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