| abstract |
Disclosed are polyurethanes and compositions, coatings, articles and methods of making the same made from polyurethanes. The present invention relates to the reaction of a component comprising (a) (i) about 1 equivalent of at least one polyisocyanate; and (ii) about 0.3 to about 0.4 equivalent of butanediol or pentanediol. An isocyanate functional urethane prepolymer comprising the product; (b) from about 0.3 to about 0.7 equivalents of trimethylolpropane; and (c) up to about 0.4 equivalents of butanediol or pentanediol. A polyurethane comprising a reaction product of components, wherein the reaction product component is essentially free of polyester polyols and polyether polyols; compositions prepared therefrom, coatings, articles, and methods of making the same To do. [Selection] Figure 1 |