发明授权
US08304517B2 Method for producing granulated carboxyl group-containing polymer particle and granulated carboxyl group-containing polymer particle
有权
含有颗粒状含羧基的聚合物粒子和含有粒状的含羧基的聚合物粒子的制造方法
- 专利标题： Method for producing granulated carboxyl group-containing polymer particle and granulated carboxyl group-containing polymer particle
- 专利标题（中）： 含有颗粒状含羧基的聚合物粒子和含有粒状的含羧基的聚合物粒子的制造方法
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申请号： US12663650申请日： 2008-06-09
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公开(公告)号： US08304517B2公开(公告)日： 2012-11-06
- 发明人: Yuichiro Morimitsu , Masatoyo Yoshinaka , Shinji Kobayashi
- 申请人： Yuichiro Morimitsu , Masatoyo Yoshinaka , Shinji Kobayashi
- 申请人地址： JP Hyogo
- 专利权人： Sumitomo Seika Chemicals Co., Ltd.
- 当前专利权人： Sumitomo Seika Chemicals Co., Ltd.
- 当前专利权人地址： JP Hyogo
- 代理机构： Hamre, Schumann, Mueller & Larson, P.C.
- 优先权： JP2007-160831 20070619
- 国际申请： PCT/JP2008/060534 WO 20080609
- 国际公布： WO2008/156003 WO 20081224
- 主分类号： C08F6/00
- IPC分类号： C08F6/00 ; C08G64/00
摘要：
An object of the present invention is to provide a method for easily producing granular carboxyl group-containing polymer particles that have a high bulk density and readily swell in water. The present invention provides a method for producing granular carboxyl group-containing polymer particles, which includes: producing carboxyl group-containing polymer particles; preparing an aggregate of the carboxyl group-containing polymer particles by allowing the carboxyl group-containing polymer particles to absorb an polar organic solvent to a liquid content of 5 to 25% by mass; and drying the aggregate of the carboxyl group-containing polymer particles and then grinding the dried aggregate.
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