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US 5,710,309 AGranted
Process for producing tris (tribromoneopentyl) phosphate
AssigneeDai-Ichi Kogyo Seiyaku Co., Ltd.
InventorsSetsuo Nishibori, Hideaki Ohnishi
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AssigneeDai-Ichi Kogyo Seiyaku Co., Ltd.
InventorsSetsuo Nishibori, Hideaki Ohnishi
Estimating the term…
The invention relates to a process for producing tris(tribromoneopentyl) phosphate (TTBNPP), which is of value as a flame retardant. The process comprises reacting tribromoneopentyl alcohol with a phosphorus oxyhalide in the presence of anhydrous aluminum chloride as catalyst in an organic solvent to give tris(tribromoneopentyl) phosphate characterized in that a basic magnesium salt is added to the reaction mixture at the completion of the reaction. Compared with the conventional production technology, the process of the invention is conducive to high production safety and insures a high yield and a high recovery rate through a simplified procedure.
A process for producing tris(tribromoneopentyl) phosphate comprising reacting tribromoneopentyl alcohol with phosphorus oxyhalide in the presence of anhydrous aluminum chloride catalyst in an organic solvent characterized in that a basic magnesium salt is added to the reaction mixture at completion of the reaction.
Dependencies are inferred from the claim text.