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Polyamide powder formed by particles having a gypsum rose structure and process for preparing such powder
Polyamide powder formed by particles having a gypsum rose structure and process for preparing such powder
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机译:由具有石膏玫瑰结构的颗粒形成的聚酰胺粉末及其制备方法
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摘要
A polyamide powder consisting essentially of elementary porous particles having a "gypsum rose" structure and a process for preparing a polyamide powder comprising polymerizing by anionic polymerization lactam in a solvent medium in the presence of a catalyst, an activator, and at least one amide; one of which is N,N'-alkylene bisamide; said polymerization being initiated with said lactam and said amide used in an amount such that the solvent is in the supersaturated state at the polymerization initiation temperature.
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