| 摘要 |
Processes are provided for producing cationic or nonionic poly(meth)acrylamide having a reduced level of (meth)acrylamide monomer contamination. In the process poly(meth)acrylamide is provided at a pH of from 2.5 to 5.0 and which is contaminated with (meth)acrylamide monomer at a level of at least 200 ppm and is then contacted with an acrylamidase enzyme without substantial pH adjustment and the acrylamidase enzyme reduces the level of residual (meth)acrylamide monomer to below 100 ppm. |
