Urethane polyol precursors for coating compositions

Details Urethane polyol precursors for coating compositions Urethane polyol precursors for coating compositions

2011-05-03

2011-05-03

Tran, Thao T. (Department: 1787)

Stock material or miscellaneous articles

Composite

Of polyamidoester

C428S425500, C528S045000, C528S049000, C528S065000

Reexamination Certificate

active

07935422

ABSTRACT:
Unsymmetrical polyurethane polyol prepolymers are disclosed for use in the formation of coating compositions. The prepolymers are prepared as a reaction product of a diisocyanate with a short chain aliphatic dial and a long chain polymeric diol. The prepolymers are intended as the first component for reaction with a second component polyisocyanate in a two-component coating composition. The coating compositions exhibit excellent abrasion resistance and weatherability, and are particularly useful as coatings for polymeric window transparencies.

REFERENCES:
patent: 4034017 (1977-07-01), Chang et al.
patent: 4403085 (1983-09-01), Christenson et al.
patent: 5939188 (1999-08-01), Moncur et al.

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