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公开(公告)号：ES2044833T3
公开(公告)日：1994-01-16
申请号：ES86116805
申请日：1986-12-03
Applicant: DEGUSSA
Inventor： STOBER REINHARD DR , FISCHER WOLFGANG , HUSS MICHAEL , UDLUFT KLAUS DR
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.
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公开(公告)号：DE3689261D1
公开(公告)日：1993-12-09
申请号：DE3689261
申请日：1986-12-03
Applicant: DEGUSSA
Inventor： STOBER REINHARD DR , FISCHER WOLFGANG , HUSS MICHAEL , UDLUFT KLAUS DR
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.
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公开(公告)号：DE3688740D1
公开(公告)日：1993-08-26
申请号：DE3688740
申请日：1986-12-03
Applicant: DEGUSSA
Inventor： STOBER REINHARD DR , FISCHER WOLFGANG , HUSS MICHAEL
Abstract: In a new process for the dry cationisation of galactomannans by reaction with alkylidene epoxides in alkaline medium in the presence of water, the reaction is carried out at 5-60 deg.C in the presence of a finely divided silicic acid. Powdery mixts. contg. 10-50 wt.% hydrophilic silicic acid and 50-90 wt.% calcium oxide or hydroxide are new and claimed.
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公开(公告)号：DE4002404A1
公开(公告)日：1991-08-01
申请号：DE4002404
申请日：1990-01-27
Applicant: DEGUSSA
Inventor： WERLE PETER DR , TRAGESER MARTIN , STOBER REINHARD DR
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公开(公告)号：DE3820969A1
公开(公告)日：1989-12-28
申请号：DE3820969
申请日：1988-06-22
Applicant: DEGUSSA
Inventor： HELLWIG GEORG DR , STOBER REINHARD DR , KLATTE CHRISTOPH , DESCHLER ULRICH DR , WOLFF SIEGFRIED DR , GOERL UDO DR
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Patent Agency Ranking
公开(公告)号：DE3726984A1
公开(公告)日：1989-02-23
申请号：DE3726984
申请日：1987-08-13
Applicant: DEGUSSA
Inventor： STOBER REINHARD DR , FISCHER WOLFGANG , HUSS MICHAEL , PIETER REIMUND DR
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.
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公开(公告)号：DE3726427A1
公开(公告)日：1989-02-16
申请号：DE3726427
申请日：1987-08-08
Applicant: DEGUSSA
Inventor： STOBER REINHARD DR , FISCHER WOLFGANG , HUSS MICHAEL , PIETER REIMUND DR
Abstract: The process entails reaction with alkylene epoxides in alkaline medium in the presence of water.
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公开(公告)号：HU227776B1
公开(公告)日：2012-02-28
申请号：HU0203554
申请日：2002-10-17
Applicant: EVONIK DEGUSSA GMBH
Inventor： GOERL UDO DR , STOBER REINHARD DR , SCHMITT MATTHIAS
IPC: C08J3/09 , C08J3/12 , C08J3/16 , C08J3/215 , C08K3/00 , C08K3/34 , C08K3/36 , C08K5/00 , C08K9/06 , C08L7/00 , C08L15/00 , C08L21/00 , C08L21/02
Abstract: Preparation of silicate and/or oxygenic filler-containing rubber powder or granulate, based on aqueous rubber emulsion or latex, involves suspension of silicate and/or filler, polysiloxane hydrophobizing agent and nonionic surfactant in water, adjustment of the pH to 2.5-7, separation of the deposited rubber powder from the solid particles, and drying the powdered or granulated product to a moisture content of less than 3%. A process for preparation of silicate and/or oxygenic filler-containing rubber powder or granulate based on aqueous rubber emulsion or latexes involves: (a) suspension of a silicate and/or oxygenic filler, polysiloxane hydrophobizing agent(s) (in amount 0.5-7% relative to the filler) and nonionic surfactant(s) (in amount 0.1-2% relative to the filler) at 10-60 degrees C in water, giving a suspension of density 0.5-5%, (b) addition of the rubber latex emulsion to the filler suspension with stirring, (c) adjustment of the pH of the aqueous mixture with an acid, preferably sulfuric acid or aluminum sulfate to a pH of 2.5-7, (d) separation of the deposited rubber powder from the process water by, for example, solid/liquid separation of the solid particles, (e) molding of the filter cake, and (f) drying of the powdered or granulated product to an end moisture content of less than 3%.
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公开(公告)号：DE50306835D1
公开(公告)日：2007-05-03
申请号：DE50306835
申请日：2003-10-15
Applicant: DEGUSSA
Inventor： SCHMITT MATTHIAS , GOERL UDO DR , STOBER REINHARD DR
Abstract: Continuous production of filled rubber granules comprises introducing an aqueous filler composition and a rubber latex through separate inlets into a reactor with a high-speed stirrer and coagulating the latex by lowering the pH and/or adding a water-soluble Group IIa, IIb, IIIa or VIII metal salt.
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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
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