| 摘要 |
PROBLEM TO BE SOLVED: To obtain a microcapsule showing good leakage resistance and low in the viscosity of a capsule dispersion by providing a wall made of a reaction product of an aliphatic polyisocyanate containing a buiret group and a guanidine compd. or a wall containing the reaction product. SOLUTION: A usable guanidine compd. is a compd. represented by formula I [wherein X is a group represented by formula II, Y is H, NC, H2 N, HO or a group represented by formula II] and salts thereof with an acid, and polyisocyanate to be used is aliphatic polysocyanate containing an aliphatic biuret group and may be, for example, a hexamethylenediisocyanate olygomer having a biuret group. Isocyanate containing, for example, 18-25wt.% of an NCO group containing a compd. represented by formula IV (wherein (n) is an integer of 1-10) in high content in a solventless form is especially advantageous. |
