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Isophorone diisocyanate
Isophorone diisocyanate (IPDI) is an organic compound in the class known as isocyanates. More specifically, it is an aliphatic diisocyanate. It is produced in relatively small quantities, accounting for (with hexamethylene diisocyanate) only 3.4% of the global diisocyanate market in the year 2000.[1] Aliphatic diisocyanates are used, not in the production of polyurethane foam, but in special applications, such as enamel coatings which are resistant to abrasion and degradation from ultraviolet light. These properties are particularly desirable in, for instance, the exterior paint applied to aircraft. Additional recommended knowledge
SynthesisThere are five steps to the synthesis of pure IPDI:[1]
ChemistryIPDI exists in two conformers, cis and trans. Their reactivities are similar. Each conformer is an asymmetrical molecule, and thus has isocyanate groups with different reactivities. The secondary isocyanate group is more reactive than the primary isocyanate group.[1] See alsoReferences |
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Isophorone_diisocyanate". A list of authors is available in Wikipedia. |