Retroreflective article containing a polyether polyurethane binder layer

摘要

A retroreflective article 10 includes retroreflective elements 12 partially embedded in a binder layer 14 that comprises a polyurethane polymer. The polyurethane polymer is a reaction product of (i) a polyether polyol having a number average molecular weight of at least 2,000 and (ii) a polyisocyanate. A retroreflective article that employs a binder layer of this kind demonstrates extraordinary laundering durability under harsh wash conditions.