<p>Process for de-inking old papers in the presence of at least partly water-soluble polymers and/or copolymers with mean molecular weights between 2000 and 500 000 obtained by polymerization or by copolymerization of monomers containing amino groups with unsaturated acid derivatives.</p>
申请公布号
FI912248(A0)
申请公布日期
1991.05.09
申请号
FI19910002248
申请日期
1991.05.09
申请人
HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN
发明人
FISCHER, HERBERT;HORNFECK, KLAUS;SCHIEFERSTEIN, LUDWIG