出典:Wiktionary
出典:『Wiktionary』 (2026/02/01 21:07 UTC 版)
polyurethane (plural polyurethanes)
polyurethane (third-person singular simple present polyurethanes, present participle polyurethaning, simple past and past participle polyurethaned)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/07 18:55 UTC 版)
A polyurethane (PUR and PU) is any polymer composed of a chain of organic units joined by carbamate (urethane) links. Polyurethane polymers are formed through step-growth polymerization, by reacting a monomer (with at least two isocyanate functional groups) with another monomer (with at least two hydroxyl or alcohol groups) in the presence of a catalyst.
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polyurethane foam made from polyurethane
a synthetic fiber made of polymides, called nylon
5葉の.
5‐foliate