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Etymology

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poly- +‎ isocyanurate

Noun

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polyisocyanurate (plural polyisocyanurates)

  1. (organic chemistry) A form of polyurethane polymer, based on cyanuric acid, formed from a polyhydroxy alcohol and a diisocyanate; it forms foams that are used for thermal insulation

Synonyms

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  • PIR (abbreviation)