公开(公告)号：FI66399B

公开(公告)日：1984-06-29

申请号：FI803318

申请日：1980-10-22

Applicant: DEGUSSA

Inventor： FISCHER WOLFGANG ,  LANGER MANFRED ,  POHL GERHARD

IPC: C08B31/12

Abstract: The known process for the production of cationic starch ethers by the reaction of starch with cationic etherifying agents in the presence of water in an alkaline medium is improved by reacting the starch at a temperature of about 50 DEG to 120 DEG C. with an alkylidene epoxide which has a tertiary amino group or quaternary ammonium group in a medium which contains about 10 to 35 weight percent water and about 0.2 to 2.0 weight percent calcium hydroxide or calcium oxide. There are produced in short reaction times yields not previously attainable.

公开(公告)号：FI103798B1

公开(公告)日：1999-09-30

申请号：FI902525

申请日：1990-05-22

Applicant: DEGUSSA

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

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：AT99701T

公开(公告)日：1994-01-15

申请号：AT88110448

申请日：1988-06-30

Applicant: DEGUSSA

Inventor： STOBER REINHARD DR ,  FISCHER WOLFGANG ,  HUSS MICHAEL ,  PIETER REIMUND DR

IPC: C08B31/12 ,  D21H17/28

公开(公告)号：FI902525A0

公开(公告)日：1990-05-22

申请号：FI902525

申请日：1990-05-22

Applicant: DEGUSSA

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

IPC: C08B31/12 ,  D21H17/28 ,  D21H17/29 ,  C08B

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：AU593322B2

公开(公告)日：1990-02-08

申请号：AU6850687

申请日：1987-02-04

Applicant: DEGUSSA

Inventor： STOBER REINHARD DR ,  FISCHER WOLFGANG ,  HUSS MICHAEL

IPC: C08B37/00 ,  C08B37/14 ,  C07H1/00

Abstract: A process for the dry cationization of galactomannans by reaction with alkylidene epoxides in an alkaline medium in the presence of water at 5 DEG to 60 DEG C. and in the presence of finely divided, hydrophilic silicic acid.

公开(公告)号：ZA885105B

公开(公告)日：1989-03-29

申请号：ZA885105

申请日：1988-07-14

Applicant: DEGUSSA

Inventor： STOBER REINHARD ,  REINHARD STOBER ,  FISCHER WOLFGANG ,  WOLFGANG FISCHER ,  PIETER MICHAEL HUSS REIMUND ,  MICHAEL HUSS REIMUND PIETER

IPC: C08B37/00 ,  C08B37/14 ,  D21H17/24 ,  C08B

Abstract: The process entails reaction with alkylene epoxides in alkaline medium in the presence of water at 5 to 60 DEG C and in the presence of a finely divided hydrophilic silica.

公开(公告)号：ZA885070B

公开(公告)日：1989-03-29

申请号：ZA885070

申请日：1988-07-13

Applicant: DEGUSSA

Inventor： STOBER REINHARD ,  REINHARD STOBER ,  FISCHER WOLFGANG ,  WOLFGANG FISCHER ,  HUSS MICHAEL ,  MICHAEL HUSS ,  PIETER RAIMUND ,  RAIMUND PIETER

IPC: C08B31/12 ,  D21H17/28 ,  C08B

Abstract: The process entails reaction with alkylene epoxides in alkaline medium in the presence of water.

公开(公告)号：ZA87717B

公开(公告)日：1987-09-30

申请号：ZA87717

申请日：1987-01-30

Applicant: DEGUSSA

Inventor： STOBER REINHARD ,  FISCHER WOLFGANG ,  HUSS MICHAEL

IPC: C08B37/00 ,  C08B37/14 ,  C08B

Abstract: A process for the dry cationization of galactomannans by reaction with alkylidene epoxides in an alkaline medium in the presence of water at 5 DEG to 60 DEG C. and in the presence of finely divided, hydrophilic silicic acid.

公开(公告)号：AU6850687A

公开(公告)日：1987-08-20

申请号：AU6850687

申请日：1987-02-04

Applicant: DEGUSSA

Inventor： STOBER REINHARD ,  FISCHER WOLFGANG ,  HUSS MICHAEL

IPC: C08B37/00 ,  C08B37/14 ,  C07H1/00

Abstract: A process for the dry cationization of galactomannans by reaction with alkylidene epoxides in an alkaline medium in the presence of water at 5 DEG to 60 DEG C. and in the presence of finely divided, hydrophilic silicic acid.

公开(公告)号：FI870250A0

公开(公告)日：1987-01-21

申请号：FI870250

申请日：1987-01-21

Applicant: DEGUSSA

Inventor： STOBER REINHARD ,  FISCHER WOLFGANG ,  HUSS MICHAEL ,  UDLUFT KLAUS

IPC: C08B31/12 ,  D21H17/28 ,  C08B

Abstract: A dry process for preparation of cationic starch ethers by reaction of starch with alkylidene epoxides in the presence of water in an alkaline medium at a temperature of 5 DEG to 40 DEG C. in the presence of a finely divided silica.