abstract |
PCT No. PCT/EP97/04545 Sec. 371 Date Mar. 11, 1999 Sec. 102(e) Date Mar. 11, 1999 PCT Filed Aug. 21, 1997 PCT Pub. No. WO98/11145 PCT Pub. Date Mar. 19, 1998An insoluble, only slight swellable, polymer having modified amino groups, which contain units of the formulae: or both (I) and (II), wherein R1, R2, R3 and Me are as defined herein. |