| abstract |
The present invention relates to a polyurethane dispersion comprising a polyurethane prepolymer prepared by reacting an isocyanate reactive molecule with a polyisocyanate excess of bis (isocyanatomethyl) cyclohexane and a product prepared therefrom. Preferably, such isocyanates are trans-1,4-bis (isocyanatomethyl) cyclohexane (i) or cis-1,3-bis (isocyanatomethyl) cyclohexane, trans-1,3- Two or more isomeric mixtures of bis (isocyanatomethyl) cyclohexane, cis-1,4-bis (isocyanatomethyl) cyclohexane and trans-1,4-bis (isocyanatomethyl) cyclohexane and (ii), wherein the isomeric mixture comprises at least about 5% by weight of trans-1,4-bis (isocyanatomethyl) cyclohexane. |