| abstract |
PROBLEM TO BE SOLVED: To provide a blocked polyisocyanate based on nonane triisocyanate useful in a solvent-type coating composition. The above-mentioned problem is a reaction product of (a) nonane triisocyanate, (b) pyrazole blocking agent, and (c) diol or polyol, comprising (i) component (a) and component (c) In which the equivalent ratio of isocyanate to hydroxy is 1: 0.15 to 1: 0.6, and (ii) the equivalent ratio of isocyanate groups to blocking groups is 1: 0.4 to 1: 0.85 This is solved by a blocked polyisocyanate comprising the product. [Selection figure] None |