| abstract |
Disclosed is a polyurethane polymer dispersion excellent in strength characteristics, heat resistance, low temperature flexibility and weather resistance. The present invention is a polyurethane dispersion and a product produced therefrom, the dispersion containing an excess of polyisocyanate and a polyurethane prepolymer produced from the reaction of isocyanate and reactive molecules, The polyisocyanate is (i) trans-1,4-bis (isocyanatomethyl) cyclohexane or (ii) cis-1,3-bis (isocyanatomethyl) cyclohexane, trans-1,3-bis (isocyanatomethyl) cyclohexane A mixture of two or more isomers of cis-1,4-bis (isocyanatomethyl) cyclohexane and trans-1,4-bis (isocyanatomethyl) cyclohexane (at least about 5% by weight of said trans-1, 4-bis (isocyanatomethyl) cyclohexane) That. [Selection] Figure 1 |