HIGH-ASPECT-RATIO MAGNESIUM HYDROXIDE

摘要

The purpose of the present invention is to provide magnesium hydroxide with a high aspect ratio, a manufacturing method therefor, and a resin composition containing said magnesium hydroxide. Said manufacturing method, whereby magnesium hydroxide with a major axis (width) of at least 0.5 µm and an aspect ratio of at least 10 is manufactured, includes the following steps: a step (A) wherein an alkali is added to and coprecipitated with a mixed aqueous solution, which consists of a water-soluble magnesium salt and a monovalent organic acid or salt thereof, or a step (B) wherein an aqueous solution of an alkali is added to and coprecipitated with an aqueous solution of a water-soluble magnesium salt and then a monovalent organic acid or salt thereof is added; and (C) a step wherein the obtained slurry is hydrothermally treated at at least 100°C.