By surrounding small droplets with a coating, one can obtain micrometer-size capsules (microcapsules), and combine multiple properties into a single system. This technology has allowed the design of advanced and functional materials. Amino resins are composed principally of urea and/or melamine and formaldehyde, and exhibit advantages as wall-forming materials, such as high mechanical strength and chemical resistance. In this review, a general description of the encapsulation process by in situ polymerization of amino resins is given. Characterization methods, and the influence of the physical and design parameters are discussed. A mechanistic description and some of the promising avenues of research are also presented.

中文翻译：

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通过氨基树脂原位聚合进行微囊化

通过用涂层包裹小液滴，可以获得微米级的胶囊（微胶囊），并将多种特性组合到一个系统中。这项技术允许设计先进的功能材料。氨基树脂主要由尿素和/或三聚氰胺和甲醛组成，并显示出作为壁形成材料的优点，例如高机械强度和耐化学性。在这篇综述中，给出了通过氨基树脂的原位聚合进行包封过程的一般描述。讨论了表征方法以及物理参数和设计参数的影响。还介绍了机理描述和一些有希望的研究途径。