| 摘要 |
PROBLEM TO BE SOLVED: To provide light formed polyurethane whose thickness is made almost equal in which the height (coat thinness) of a form can be easily adjusted even when this polyurethane is molded by open mold without damaging the original characteristics (moisture-proofness, water resistance, insulating performance, and impact absorbency or the like) of the polyurethane, and a method for manufacturing electronic components coated with the formed polyurethane, and a printed circuit board coated with the formed polyurethane. SOLUTION: This formed polyurethane whose forming magnification ranges from 1.1 to 2.5 times in an independent air-bubble type is, desirably, formed as the molded body of polyurethane compositions including a micro-balloon constituted by including forming agent in the hollow of a hollow sphere.
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