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Polyurethane (coatings, sealants, adhesives)Moisture in the PU system reacts with isocyanate, no matter in single-component or two-component polyurethane products, which produce amine and carbon di... All the atmospheric air contains a certain amount of water vapor. Now, imagine the atmosphere as a huge, slightly moist sponge. If we squeeze the sponge very hard, the absorbed water drops out. The... |
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