Journal of the Society of Inorganic Materials, Japan
Online ISSN : 2185-4378
ISSN-L : 1345-3769
V型ポリリン酸アンモニウムの合成プロセスの開発
鈴木 宏和桜井 誠渡邉 誠
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2002 年 9 巻 297 号 p. 84-90

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Ammonium polyphosphate (APP) form V was prepared by heating process from the system of ammonium orthophosphate-urea. APP form V with a high purity was obtained by controlling the partial pressure of ammonia gas and humidity in the atmosphere of the reaction furnace. The form V APP was hardly soluble in water and had a very small average particle size of about 3-4μm and can be employed as an useful flame retardant for organic materials.

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