| 摘要 |
<p>Polyurethane dispersions are described that are resistant to water and alcohol, exhibit a long pot life, and produce a hard, high gloss finish without the need for a curing step, and which are suitable as coatings and/or adhesives for wood, concrete, natural and synthetic fibers, plastic films etc. Such a composition comprises a polymerized blend of a first component consisting essentially of a mixture solely of aromatic diisocyanates or of one or more aromatic diisocyanates with one or more aliphatic diisocyanates; a second component consisting essentially of one or more polyhydroxyl compounds; and a polyhydroxyl compound containing a carboxyl moiety.</p> |
