MDI Slabstock Foam-Flammability Performance without Added Flame Retardants

摘要

While flammability regulations are becoming more stringent, slabstock foam producers are coming under increasing pressure to eliminate halogenated flame retardants (FR) from their formulations. Although halogenated additives have been specifically targeted, any FR additive will contribute cost, and may degrade the performance of slabstock foam. In response to the emerging market need" for slabstock foam free of FR, BASF recently developed an innovative solution. LUPRANATE?280 Isocyanate is a versatile MDI product which can be formulated using typical ingredients to produce conventional, high resilience and viscoelastic slabstock foam. This paper provides examples across all three applications. Excellent processing and properties were achieved, especially for conventional foam where processing difficulties have been encountered in past work. Remarkably, California 117-compliance was accomplished without using FR additives. Formulation of LUPRANATE?280 Isocyanate with PLURACOL Balance? 50 offers the additional ecological advantage of renewable content in the formulation. A thermogravimetric analysis (TGA) study comparing MDI and TDI conventional foam is also included to gain some understanding of the flammability performance.