Hexamethylene diisocyanate
Hexamethylene diisocyanate (HDI) 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 isophorone diisocyanate) only 3.4% of the global diisocyanate market in the year 2000. Aliphatic diisocyanates are used 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.
Synthesis
There are two steps to the synthesis of pure HDI:
Chemistry
HDI is a symmetrical molecule and thus has two isocyanate groups of equal reactivity.
See also
References
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Imported Society
by: M.O.D.They came from the other side
In bunches at a time
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Some of them got money
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To take from our pockets
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Genocide
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Import, import, imported society
Import, import, imported society
Import, import, imported society
Import, import, imported society
Hindus and Ethiopians
You know they're all the same
A huck a buck of Indians
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