| 发明名称 |
VINYLPYRROLIDONE-BASED POLYMER POWDER AND ITS MANUFACTURING PROCESS |
| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a vinylpyrrolidone-based polymer powder with a low content of a metal and a process for manufacturing the powder. <P>SOLUTION: The vinylpyrrolidone based polymer powder has a K value determined by the Fikentscher method of less than 50 and comprises not more than 10 mass% of particles with a particle size of not more than 106μm and not more than 5 ppm of metals. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
| 申请公布号 |
JP2008120982(A) |
申请公布日期 |
2008.05.29 |
| 申请号 |
JP20060309663 |
申请日期 |
2006.11.15 |
| 申请人 |
NIPPON SHOKUBAI CO LTD;DAI ICHI KOGYO SEIYAKU CO LTD |
发明人 |
OKAMURA KAZUHIRO;INAOKA SUSUMU;FUJISE KEIICHI |
| 分类号 |
C08J3/12;B29B13/06;B29B13/10;B29K29/00 |
主分类号 |
C08J3/12 |
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