Polyurethane isocyanate reacts with urethane and urea groups
Carbamate and urea groups still contain activity Hydrogen can continue to react with isocyanate groups to form cross-linking bonds. The activity of urethane group and urea group is lower than that of …
Polyurethane reacts with water
Production of microporouspolyurethane Elastomers often use water as a foaming agent. In addition, trace amounts of water are inevitably present in polyols such as polyester and polyether and other raw…
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