【発明の名称】「砂漠のバラ」構造を有する粒子から成るポリアミド粉末とその製造方法

Title:

【発明の名称】「砂漠のバラ」構造を有する粒子から成るポリアミド粉末とその製造方法

Document Type and Number:

Japanese Patent JP3065320

Kind Code:

B2

Abstract:

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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Inventors:

Jean-Claude Eirele
Roland Guerlain

Application Number:

JP19976988A

Publication Date:

July 17, 2000

Filing Date:

August 10, 1988

Export Citation:

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Assignee:

Elf Atochem Society Anonymous

International Classes:

A61K8/88; A61K8/00; A61K9/14; A61K47/34; A61Q1/00; A61Q1/12; C08G69/18; C08G69/20; C08J3/14; C08J9/28; (IPC1-7): C08G69/18

Domestic Patent References:

JP6254735A
JP63186739A

Attorney, Agent or Firm:

Takashi Koshiba

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