Does natural memory foam exist? Part 2
How can it be petroleum free when the definition of memory foam says it is a polyurethane.
How can something contain diphenyl diisocyanate and claim to be natural?
What is Methylene diphenyl diisocyanate?
Most often abbreviated as MDI, is an aromatic diisocyanate. It exists in three isomers, 2,2′-MDI, 2,4′-MDI, and 4,4′-MDI, but the 4,4′ isomer is most widely used. This isomer is also known as Pure MDI. MDI reacts with polyos in the manufacture of polyurethane. It is the most produced diisocyanate, accounting for 61.3% of the global market in the year 2000.
MDI is the least hazardous of the commonly available isocyanates but is not benign. Its very low vapour pressure reduces its hazards during handling compared to the other major isocyanates (TDI, HDI). However, it, like the other isocyanates, is an allergen and sensitizer. Persons developing sensitivity to isocyanates may have dangerous systemic reactions to extremely small exposures, including respiratory failure. Handling MDI requires strict engineering controls and personal protective equipment.
Now, does that sound like natural or organic?
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