公开(公告)号：DE3626662C1

公开(公告)日：1987-12-10

申请号：DE3626662

申请日：1986-08-07

Applicant: DEGUSSA

Inventor： STOBER REINHARD DR ,  KOHN ELLEN ,  BISCHOFF DIETMAR

IPC: C08F8/30 ,  C08F8/00 ,  C08F8/32 ,  C08F8/44 ,  D21H17/36

公开(公告)号：ES2052510T3

公开(公告)日：1994-07-16

申请号：ES87106169

申请日：1987-04-28

Applicant: DEGUSSA

Inventor： STOBER REINHARD DR ,  KOHN ELLEN ,  BISCHOFF DIETMAR

IPC: C08F8/30 ,  C08F8/00 ,  C08F8/32 ,  C08F8/44 ,  D21H17/36

公开(公告)号：DE3782111D1

公开(公告)日：1992-11-12

申请号：DE3782111

申请日：1987-04-28

Applicant: DEGUSSA

Inventor： STOBER REINHARD DR ,  KOHN ELLEN ,  BISCHOFF DIETMAR

IPC: C08F8/30 ,  C08F8/00 ,  C08F8/32 ,  C08F8/44 ,  D21H17/36

Abstract: Cationised polyvinyl alcohol (PVA) is produced by A) as known reacting N contg. alkylidene epoxides with PVA in presence of B) 11-30 wt.% water, referred to total reaction mixt. and 1-4 wt.% alkali or alkaline earth metal hydroxide or alkaline earth metal oxide, referred to PVA. The reaction is pref. carried out at 5-75 deg. C. The epoxides pref. have formula Q-(CH2)n-NR2 or Q-(CH2)2-N(+)R3.X(-) where Q is an epoxy gp; n is 1, 2 or 3, each R is independently 1-18C alkyl; 1 R can be benzyl or -C2H4OH; X is Cl, Br, SO4 or acetate. The reaction mixt. also contains 0.02-2.0 wt.%, referred to mixt., finely divided hydrophilic and/or hydrophobic silicic acid. Thereaction mixt. is esp. homogenised for 10-1,500 sec using intensive stirring.

公开(公告)号：AT81347T

公开(公告)日：1992-10-15

申请号：AT87106169

申请日：1987-04-28

Applicant: DEGUSSA

Inventor： STOBER REINHARD DR ,  KOHN ELLEN ,  BISCHOFF DIETMAR

IPC: C08F8/30 ,  C08F8/00 ,  C08F8/32 ,  C08F8/44 ,  D21H17/36