Polyurethane Adhesives

Authored by: Dennis G. Lay , Paul Cranley , Antonio Pizzi

Handbook of Adhesive Technology

Print publication date:  December  2017
Online publication date:  December  2017

Print ISBN: 9781498736442
eBook ISBN: 9781315120942
Adobe ISBN:

10.1201/9781315120942-11

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Abstract

The chemistry and main applications of polyurethane adhesives are described. Polymer morphology, raw materials used, prepolymer formation, and surface preparation for best results are also described. Both two-component and one- component polyurethane adhesives are presented. More recent applications, for example, hybrid adhesives such as polyurethane epoxies, reactive hot-melts, and pressure-sensitive adhesives are presented and discussed. The chapter also concentrates on biobased/biosourced polyurethane adhesives. In this latter category are described (i) polyurethanes prepared from isocyanates by reacting with biosourced polyols using a conventional polyurethane chemistry approach, and (ii) nonisocyanate polyurethanes. The preparation of these latter ones, based on a rather unconventional urethane-formation chemistry, is described for totally synthetic, part synthetic/part biosourced, and totally biosourced urethanes.

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