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US 12,162,776 B2Granted
Method of producing magnesium hydroxide
OwnerKonstantinos G. Gatos, Pantelis Baxevanidis-Taros +2inventors
InventorsKonstantinos G. Gatos, Pantelis Baxevanidis-Taros, Filippos Boukas, Emmanouel Tsontakis
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Abstract
The current invention relates to a process for producing magnesium hydroxide. Said magnesium hydroxide is suitable for mixing with polymers and for inducing flame retardant properties in polymeric compounds. According to aspects of the invention a magnesium oxide containing material is hydrated at high temperatures and pressures. The hydroxide containing material can be further dried and milled.
Claims8
A method of producing a magnesium hydroxide containing material, comprising:
- hydrating a magnesium oxide containing material at a temperature between 120° C. and 350° C. to produce the magnesium hydroxide containing material, wherein the magnesium oxide containing material presents a specific surface of more than 0.1 m2/gr and less than 25 m2/gr;
- drying the magnesium hydroxide containing material;
- and
- milling the magnesium containing material,
- wherein the dried magnesium hydroxide containing material further comprises particles with a d50 of more than 0.5 μm and less than 35 μm and the dried magnesium hydroxide containing material comprising particles presenting a specific surface of more than 1 m2/gr and less than 20 m2/gr.
2 more elements
Dependencies are inferred from the claim text.