发明授权
- 专利标题: Preparation of polymer powders
- 专利标题(中): 聚合物粉末的制备
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申请号: US10556681申请日: 2004-05-10
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公开(公告)号: US07547741B2公开(公告)日: 2009-06-16
- 发明人: Joachim Pakusch , Markus Koppers , Wolfgang Gaschler , Heinrich Sack , Juergen Schmidt-Thuemmes , Hans-Juergen Denu
- 申请人: Joachim Pakusch , Markus Koppers , Wolfgang Gaschler , Heinrich Sack , Juergen Schmidt-Thuemmes , Hans-Juergen Denu
- 申请人地址: DE Ludwigshafen
- 专利权人: BASF Aktiengesellschaft
- 当前专利权人: BASF Aktiengesellschaft
- 当前专利权人地址: DE Ludwigshafen
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 优先权: DE10322787 20030519
- 国际申请: PCT/EP2004/004959 WO 20040510
- 国际公布: WO2004/101657 WO 20041125
- 主分类号: C08L33/24
- IPC分类号: C08L33/24 ; C08F6/24 ; C04B14/06
摘要:
A process for preparing a polymer powder by evaporating the volatile constituents from an aqueous dispersion of a film-forming polymer P, wherein prior to the evaporation of the volatile constituents the aqueous polymer dispersion still comprises drying assistants T, present in an amount of from 0.1 to 80% by weight, based on the polymer P of the dispersion, and there being used as drying assistant T polyvinylformamide. The polyvinylformamide used preferably has a K value (KW), determined by the method of Fikentscher in accordance with DIN 53726, of from 5 to 50.
公开/授权文献
- US20070004834A1 Method for the production of polymer powders 公开/授权日:2007-01-04