- 专利标题： Process for preparing a polymer powder
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申请号： US17271342申请日： 2019-08-07
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公开(公告)号： US11084908B1公开(公告)日： 2021-08-10
- 发明人: Peter Niepoth , Verena Melk , Andrea Engel
- 申请人： Evonik Operations GmbH
- 申请人地址： DE Essen
- 专利权人： Evonik Operations GmbH
- 当前专利权人： Evonik Operations GmbH
- 当前专利权人地址： DE Essen
- 代理机构： Grüneberg and Myers PLLC
- 优先权： EP18191923 20180831
- 国际申请： PCT/EP2019/071168 WO 20190807
- 国际公布： WO2020/043448 WO 20200305
- 主分类号： C08J3/12
- IPC分类号： C08J3/12 ; F26B5/04 ; F26B3/30 ; F26B5/06
摘要：
A process prepares a polymer powder, with a D50 particle size from 40 to 200 μm and a Hausner factor of 1.25 or less, by freeze drying and subsequent loosening up of an aqueous polymer dispersion containing 15 to 50% by weight of a polymer. The polymer is polymerized from 10 to 30% by weight of methyl methacrylate, 50 to 70% by weight of methyl acrylate, and 5 to 15% by weight of methacrylic acid.
公开/授权文献
- US20210238369A1 Process for preparing a polymer powder 公开/授权日：2021-08-05
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