| abstract |
PCT No. PCT/KR94/00097 Sec. 371 Date Jan. 19, 1996 Sec. 102(e) Date Jan. 19, 1996 PCT Filed Jul. 20, 1994 PCT Pub. No. WO95/03450 PCT Pub. Date Feb. 2, 1995The present invention relates to retention aids for papermaking, in particular which comprise cationic multiarmed star-like polymers of formula (I): (D)y-(A)+547 B-(CH2)n-(E)p-(F)q+548 x(I) as an effective component to improve the retention of fines fraction by structural characteristics of multiarmed polymer chains connected with one starting point on the compound. In formula (I), A is <IMAGE> <IMAGE> <IMAGE> or <IMAGE> B is -O- or -COO-; D is -OH; E is <IMAGE> F is <IMAGE> wherein, R1-R11 are independently hydrogen or alkyl; Ra-Rd are independently hydrogen or alkyl; X-is <IMAGE> x is an integer selected from 3 to 24; y is an integer selected from 0 to 21; n is an integer selected from 3 to 6; p is an integer selected from 300 to 4000; and q is an integer selected from 0 to 1000. |