| 摘要 |
The microcapsule is prepared by adding and heating, then reacting, at dilute acidity condition, the emulsifying product (A) in the water solution comprising the melamine-formaldehyde precondensate or melamin- urea formaldehyde precondensate prepd. in alkali water solution, to form the isolating layer around the microfarticles and to stabilize the isolating layer in the alkali condition. The emulsifying product (A) is prepd. by dispersing and emulsifyign as the noncontinuous particles of the hydrophobic dye soln. in the acidic water soln. of the styrene-maleic anhydride copolymer, polycarbonate naphthalene sulfonate- formaline polycondensate.
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