| 摘要 |
<p>PCT No. PCT/EP90/00024 Sec. 371 Date Jul. 12, 1991 Sec. 102(e) Date Jul. 12, 1991 PCT Filed Jan. 5, 1990 PCT Pub. No. WO90/08220 PCT Pub. Date Jul. 26, 1990.The invention relates to a process for the flotation of fillers from deinked wastepaper in the presence of organic phosphoric acid esters. The flotation of the fillers occurs after deinking the wastepaper by flotation.</p> |
