| 摘要 |
<p>A class of cross-linked fluorinated polyurethanes, which can be used for protecting and reinforcing coatings on films, sheets, laminates and similar thin structures made of cellulose, graphite, mica, kaolin, leather etc. as well as for adhesive and reinforcing material in multy-layer structures made of films, sheets, laminates and similar thin structures made of graphite, mica, kaolin, etc. These polyurethanes can be obtained starting from the following components: (A) a polyisocyanate consisting of a perfluoropolyether chain bound to the -NCO terminal groups through an aromatic or cycloaliphatic radical; and (B) a polyol consisting of a perfluoropolyether chain bound to the -OH terminal groups through an aromatic or cycloaliphatic radical. s</p> |
