公开(公告)号：DE59808427D1

公开(公告)日：2003-06-26

申请号：DE59808427

申请日：1998-10-08

Applicant: DEGUSSA

Inventor： GOEBEL DR ,  LORTZ DR ,  STOERGER REINER ,  WITTMANN PROF ,  GERDES ANDREAS

IPC: C04B24/42 ,  C04B103/65

Abstract: Homogeneously waterproofed concrete is produced by adding an aqueous emulsion containing a hydrolysable alkoxysilane compound and optionally condensation products thereof to the fresh concrete mix containing water, inorganic and possibly organic components and then allowing the mix to harden. A process for the production of bulk-waterproofed concrete, in which a water-containing mixture of known inorganic components and possibly small amounts of organic components is treated during (or possibly after) its production with an aqueous emulsion containing an organo-silicon compound of formula (I) and optionally condensation products thereof, and then allowed to harden. R, R1 = optionally branched 1-3C alkyl; R3 = 1-20C (preferably 1-10C) alkyl or phenyl; a = 0 or 1; b = 1 or 2; c = 1-18; X = H, Cl, Br, I, NH2, SCN, CN, N3, NHR, N(R)2, N(R)3 or aryl (especially phenyl) if b = 1, or alkenyl (especially 1-6C alkenyl) if b = 2, or Sx (with x = 1-6) if b = 2 and c = 1-6, or any group if b = 2 and c = 1-12 (preferably 1-6) . An Independent claim is also included for concrete mixtures containing known inorganic and possibly organic components plus an aqueous emulsion as above.

公开(公告)号：DE59707913D1

公开(公告)日：2002-09-12

申请号：DE59707913

申请日：1997-10-28

Applicant: DEGUSSA

Inventor： BALDUF DR ,  WIELAND DR ,  LORTZ DR ,  POHLISCH DR ,  GOEBEL DR ,  GRETHE HORST

IPC: C07F7/18

Abstract: A continuous process for the production of gamma -aminopropyl- trialkoxysilane and mixtures of primary and secondary aminosilanes comprises: (a) mixing gamma -chloropropyl- trialkoxysilane with ammonia in a desired ratio of reactants; (b) heating the mixture to the reaction temperature; (c) allowing the reaction to proceed in a pressure reactor with a sufficient residence time for complete conversion, during which the reaction mixture may pass through several temperature zones; (d) subsequently cooling the reaction mixture and if necessary adding an organic solvent as extraction agent; (e) separating the product gamma -amino trialkoxysilane or mixtures of primary and secondary aminosilanes from the resulting two-phase mixture, optionally by extraction; and (f) recycling the ammoniacal phase to the reactor either at stage the mixing or reaction stage.

公开(公告)号：DE50106775D1

公开(公告)日：2005-08-25

申请号：DE50106775

申请日：2001-12-21

Applicant: DEGUSSA

Inventor： MANGOLD DR ,  LORTZ DR ,  BATZ-SOHN DR ,  PERLET GABRIELE ,  WILL WERNER

IPC: A61K8/18 ,  A61K8/25 ,  A61Q1/02 ,  C01B33/141 ,  C01B33/18 ,  C03C17/25 ,  C09C1/68 ,  C09G1/02 ,  C09K3/14 ,  D21H19/40 ,  H01L21/304 ,  H01L21/306

Abstract: A pyrogenic process is used to prepare alkali-doped silica particles. Particles produced by this process exhibit homogeneous doping, reduced agglomeration, greater stability and higher removal rates. Aqueous dispersions containing alkali-doped pyrogenic silica with average particle size less than 100 nm are used for polishing surfaces (CMP).

公开(公告)号：DE59911267D1

公开(公告)日：2005-01-20

申请号：DE59911267

申请日：1999-09-10

Applicant: DEGUSSA

Inventor： STUEBBE ANDREAS ,  GOEBEL DR ,  LORTZ DR ,  GLAUM DR

IPC: C09D11/00 ,  C09D11/02 ,  C09D11/16 ,  C09D11/38 ,  C09D17/00

Abstract: A colorant mixture containing at least one silane is new. An Independent claim is included for preparation of the mixture by addition of an organosilane emulsion and optionally a hydrophobic SiO2 mixture prepared by the pyrogen method to a tensid surfactant containing aqueous pigment mixture.

公开(公告)号：DE50300055D1

公开(公告)日：2004-09-23

申请号：DE50300055

申请日：2003-01-28

Applicant: DEGUSSA

Inventor： BATZ-SOHN DR ,  SCHARFE THOMAS ,  LORTZ DR

IPC: B41M5/00 ,  B01J13/00 ,  B05D5/04 ,  B41M5/50 ,  B41M5/52 ,  C09C1/00 ,  C09C1/28 ,  C09D7/12 ,  C09D17/00 ,  C09D201/00

Abstract: The stable, aqueous dispersion has between 20 and 80 Gew.-per cent related to the total quantity of the dispersion, metal and/or metalloid oxide powder present in the form of aggregates of primary particles. The powder has at least two types of powder with the same sign of surface charge for a given pH value and a zeta potential causing an electrostatic repulsion between the particles greater than the van der Waals attraction of the powder. The stable, aqueous dispersion has between 20 and 80 Gew.-per cent related to the total quantity of the dispersion, metal and/or metalloid oxide powder present in the form of aggregates of primary particles in the dispersion, where the mean diameter of the aggregate is between 10 and 300 nm and the mean diameter of the primary particles is between 5 and 50 nm. The powder has at least two types of powder with the same sign of surface charge for a given pH value and a zeta potential causing an electrostatic repulsion between the particles greater than the van der Waals attraction of the powder. AN Independent claim is also included for the following: a brushing-on color and a recording medium.

公开(公告)号：DE59907927D1

公开(公告)日：2004-01-15

申请号：DE59907927

申请日：1999-10-26

Applicant: DEGUSSA

Inventor： LUGINSLAND DR ,  KRAFCZYK DR ,  LORTZ DR

IPC: B60C1/00 ,  B29D30/06 ,  B60C11/00 ,  C08G77/28 ,  C08G77/392 ,  C08G77/50 ,  C08L9/00 ,  C08L21/00 ,  C08L83/08 ,  C08L83/14

Abstract: Sulfur-functional polyorganosiloxanes containing side-chain groups which can bond with silicic acid (preferably alkoxy or haloalkoxy) and side-chain groups which can bond with elastomers, preferably mercapto, thiocyanato, disulfide or polysulfide groups. Sulfur-functional polyorganosiloxanes of formula (I), R -R = H, 1-4C alkyl, alkoxy, haloalkyl or haloalkoxy, phenyl, aryl or aralkyl; W = a group which can bond to silicic acid, preferably 1-4C alkoxy or haloalkoxy; Y = alkyl, haloalkyl, phenyl, aryl or aralkyl; Z = a 0-6C alkylidene group; A = a group which can form bonds with at least one elastomer in a rubber mixture, i.e. mercapto or thiocyanato if q = 1, or disulfide or polysulfide (Sx) if q = 2; x = 2-10; (k+m+n+p) = 3 or more; k = n = 0 (optionally). Independent claims are also included for (a) a process for the production of (I) by reacting compounds of formula (IV) with compounds of formula MSH, MSCN or M2Sx, or with M2S and sulfur, in an alcohol W-H at 20-150 degrees C under normal pressure, optionally with a catalyst, using compounds in which X = halogen; M = a metal ion; (b) rubber mixtures containing (I); (c) a process for the production of rubber mixtures by using (I) and other filler(s) in addition to rubber; (d) molded products obtained from these rubber mixtures.