Baydur® 726 IBS

Baydur 726 IBS is a high-density polyurethane structural foam system used in the reaction injection molding (RIM) process. This system incorporates a specially engineered interactive blowing system (IBS) and is supplied as two reactive liquid components. Component A is a modified polymeric diphenylmethane diisocyanate (PMDI) prepolymer blend, and Component B is a formulated polyol system containing no CFC- or HCFC-blowing additives. Baydur 726 IBS system is used in applications requiring a UL94 flammability rating* of V-0 and/or 5VA for use in electronic, equipment housing, and appliance markets. The applications typically take advantage of the material's strength, excellent surface finish, and large-part capability. As with any product, use of the Baydur 726 IBS system in a given application must be tested (including field testing, etc.) in advance by the user to determine suitability.

Component A (PMDI isocyanate blend) will react with moisture and must be stored in tightly closed containers and protected from contamination with moisture and other foreign materials, which can adversely affect processing. It will react slowly with water to form polyureas and carbon dioxide gas, which may cause sealed containers to expand and rupture. Storage temperatures should be maintained between 17° and 30°C (62° and 86°F). Component B (polyol system) is hygroscopic and may absorb water. Containers must be kept closed and protected from moisture and foreign materials which can adversely affect processing. Recommended storage temperature is between 4° and 38°C (39° and 100°F). Note: Component B phase separates upon standing and must be mixed thoroughly via mechanical means prior to use.

*These items are provided as general information only. They are approximate values and are not part of the product specifications.