The article focuses on the crystalline thermoplastic polyurethanes (TPU) allow a high degree of control in formulating reactive hot-melt (RHM) adhesives. It mentions that RHMs are moisture-curing adhesives that display a fast molecular weight increase when reacted with water from ambient humidity or from free electrons in the bonded substrates; and also mentions the addition of a crystalline TPU during the synthesis process of an RHM adhesive provide final bond strength improvement.
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