| 摘要 |
<p>Process comprises (a) forming a suspension in an aq. emulsion of (I), an isocyanate and an acyl halide, with at least one of the isocyanate and acyl halide being polyfunctional; and (b) adding an amine to the emulsion, in an amt. such that less than 1000 ppm (based on total wt.) of the amine is unreacted, to produce microcapsules of (I) with a shell of polyamide-polyurea.</p> |
