发明名称 |
Methods for making polymers from N-vinyl acetamide monomer |
摘要 |
The present invention is directed to precipitation polymerization processes for the manufacture of essentially non-crosslinked polymers prepared from N-vinyl acetamide monomer which exhibit reduced levels of residual non-polymerizable contaminants, particularly residual acetamide, the processes including the steps of contacting the N-vinyl acetamide monomer with a polymerization medium containing a diluent selected from ethyl acetate and acetone and a free-radical initiator, under conditions effective to polymerize the N-vinyl acetamide monomer, thereby forming a precipitate of the polymer in the polymerization medium; and isolating the precipitated polymer from the polymerization medium.
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申请公布号 |
US6538088(B1) |
申请公布日期 |
2003.03.25 |
申请号 |
US19990259163 |
申请日期 |
1999.02.26 |
申请人 |
NATIONAL STARCH AND CHEMICAL INVESTMENT HOLDING CORPORATION |
发明人 |
LEBLANC JEAN-PIERRE;CHANDRAN RAMA S. |
分类号 |
C08F6/00;C08F6/12;C08F26/02;(IPC1-7):C08J26/00 |
主分类号 |
C08F6/00 |
代理机构 |
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