出典:Wiktionary
出典:『Wiktionary』 (2016/12/23 05:25 UTC 版)
polyurea (複数形 polyureas)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/14 14:35 UTC 版)
Polyurea is a type of elastomer that is derived from the reaction product of an isocyanate component and a synthetic resin blend component through step-growth polymerization. The isocyanate can be aromatic or aliphatic in nature. It can be monomer, polymer, or any variant reaction of isocyanates, quasi-prepolymer or a prepolymer. The prepolymer, or quasi-prepolymer, can be made of an amine-terminated polymer resin, or a hydroxyl-terminated polymer resin.
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