Patent ID: 8030430

Claim:
A chemical composition comprising one or more urethane oligomers of at least two polymerized units, wherein said oligomers comprise the reaction product of: (a) one or more polyfunctional isocyanate compounds, (b) one or more polyols, (c) one or more monoalcohols selected from the group consisting of fluorocarbon monoalcohols, optionally substituted long-chain hydrocarbon monoalcohols, and mixtures thereof, (d) one or more silanes of the following formula: X—R 1 —Si—(Y) 3 wherein X is an isocyanate reactive group selected from —NH 2 , —SH, —OH, or —NRH, where R is selected from the group consisting of phenyl, straight and branched aliphatic, alicyclic, and aliphatic ester groups, R 1 is an alkylene, heteroalkylene, aralkylene, or heteroaralkylene group, and each Y is independently a hydroxyl, a hydrolyzable moiety selected from the group consisting of alkoxy, acyloxy, heteroalkyoxy, heteroacyloxy, halo, and oxime, or a non-hydrolyzable moiety selected from the group consisting of phenyl, alicyclic, straight-chain aliphatic, and branched-chain aliphatic, wherein at least one Y is a hydrolyzable moiety, and (e) one or more stabilizers selected from the group consisting of UV absorbers comprising one or more isocyanate-reactive groups and HALS comprising one or more isocyanate-reactive groups.