公开(公告)号：DE3917632A1

公开(公告)日：1990-12-06

申请号：DE3917632

申请日：1989-05-31

Applicant: DEGUSSA

Inventor： FISCHER WOLFGANG ,  BISCHOFF DIETMAR ,  HUSS MICHAEL ,  STOBER REINHARD DR ,  ROESSLER GERT DR

IPC: C08B31/12 ,  D21H17/28 ,  D21H17/29

Abstract: Process for the preparation of a cationic starch having a controlled viscosity, in which, in one process step, the starch is homogenised in the presence of 10 to 35 % by weight of water and preferably 0.01 to 2.00 % by weight of a finely divided silica and/or silicate (based in each case on the total amount of the mixture) with an alkaline oxide, hydroxide, silicate or aluminate or a mixture thereof, an alkylene epoxide and a peroxy compound or a mixture of at least two peroxy compounds, and is then boiled down at the desired time.

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