发明申请
US20080249237A1 Process for Producing Ultrafine Powders Based on Polyamides, Ultrafine Polyamide Powders and Their Use
有权

基本信息:
- 专利标题: Process for Producing Ultrafine Powders Based on Polyamides, Ultrafine Polyamide Powders and Their Use
- 专利标题(中):基于聚酰胺,超细聚酰胺粉末生产超细粉的方法及其应用
- 申请号:US12089998 申请日:2006-10-12
- 公开(公告)号:US20080249237A1 公开(公告)日:2008-10-09
- 发明人: Harald Hager , Franz-Erich Baumann , Wolfgang Lortz , Christoph Batz-Sohn
- 申请人: Harald Hager , Franz-Erich Baumann , Wolfgang Lortz , Christoph Batz-Sohn
- 申请人地址: DE Essen
- 专利权人: EVONIK DEGUSSA Gmbh
- 当前专利权人: EVONIK DEGUSSA Gmbh
- 当前专利权人地址: DE Essen
- 优先权: DE102005053071.0 20051104
- 国际申请: PCT/EP2006/067308 WO 20061012
- 主分类号: C08L77/06
- IPC分类号: C08L77/06 ; C08G69/26 ; B29C45/00 ; B29C47/00 ; B29C49/00
摘要:
Process for preparing ultrafine powders based on polyamides by contacting polyamides having a relative solution viscosity ηrel in the range from 1.5 to 2.0, measured in 0.5% m-cresol solution at 25° C., with an alcoholic medium in the presence of inorganic particles under the action of pressure and/or temperature to generate an at least partial solution, and then precipitating the polyamide from the at least partial solution, characterized in that a suspension of the inorganic particles suspended in the alcoholic medium is used. The resulting ultrafine polyamide powders have a specific BET surface area in the range of 5-100 m2/g; a fineness d50 of less than 70 μm; an apparent density AD in the range from 250 to 1000 g/l; and a particle content of 0.1 to 80% by weight of inorganic particles based on the total weight of the polyamide powder. They are equally suitable for coatings and for mouldings and components with improved mechanical properties.
摘要(中):
通过使具有相对溶液粘度和相对粘度的聚酰胺在25℃下在0.5%间甲酚溶液中测量的1.5至2.0的范围内与醇混合来制备基于聚酰胺的超细粉末的方法 介质在无机颗粒存在下在压力和/或温度的作用下产生至少部分溶液,然后从至少部分溶液中沉淀聚酰胺,其特征在于悬浮在醇介质中的无机颗粒的悬浮液 用来。 得到的超细聚酰胺粉末的比BET比表面积为5-100m 2 / g; 细度d <50%小于70μm; 在250〜1000g / l范围内的表观密度AD; 和基于聚酰胺粉末的总重量的无机颗粒的0.1〜80重量%的颗粒含量。 它们同样适用于具有改善的机械性能的涂料和模制品和组分。
公开/授权文献:
IPC结构图谱:
C | 化学;冶金 |
--C08 | 有机高分子化合物;其制备或化学加工;以其为基料的组合物 |
----C08L | 高分子化合物的组合物 |
------C08L77/00 | 由在主链中形成羧酸酰胺键合反应得到的聚酰胺的组合物;这些聚合物的衍生物的组合物 |
--------C08L77/06 | .由多元胺与多元羧酸得到的聚酰胺 |