| 摘要 |
<p>A b s t r a c t The invention relates to the use of at least partly water-soluble polymers having weight average molecular weights of 2,000 to 500,000, prepared by reaction of polymers containing carboxyl, ester and/or anhydride groups with amino alcohols and/or diamines, for the removal of printing inks from printed wastepaper and/or recycling water in the paper making industry. 17</p> |
