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    41.
    发明专利
    未知

    公开(公告)号：DE10317066A1

    公开(公告)日：2004-11-11

    申请号：DE10317066

    申请日：2003-04-14

    Applicant: DEGUSSA

    Inventor： LORTZ WOLFGANG ,  BATZ-SOHN CHRISTOPH ,  PERLET GABRIELE ,  WILL WERNER ,  SCHNEIDER GERRIT

    IPC: C01B13/14 ,  C01B33/141 ,  C01F7/02 ,  C03C1/00 ,  C09G1/02 ,  C09K3/14 ,  C01G1/02 ,  C01B33/14

    Abstract: Process for the production of an aqueous dispersion of pyrogenically produced metal oxide and metalloid oxide powders with a BET surface area of between 5 and 600 m2/g, with a metal oxide or metalloid oxide content in the dispersion of between 5 and 25 wt. %, comprising the following steps: water, which is optionally adjusted to pH values of between 2 and 4 by adding acids, is circulated from a receiving vessel via a rotor/stator machine, and metal oxide or metalloid oxide powder is introduced, using a feed device, into the shear zone between the slots in the rotor teeth and the stator slots, continuously or discontinuously and with the rotor/stator machine running, in a quantity such that a predispersion with a solids content of between 20 and 40 wt. % results, and, after all the metal oxide powder or metalloid oxide powder has been added, the feed device closes and shearing continues in such a way that the shear rate is in the range of between 10000 and 40000 s-1, and then, by dilution, the predispersion is adjusted to the desired solids content of the dispersion while maintaining the dispersing conditions.

    43.
    发明专利
    未知

    公开(公告)号：DE10256267A1

    公开(公告)日：2004-06-24

    申请号：DE10256267

    申请日：2002-12-03

    Applicant: DEGUSSA

    Inventor： BATZ-SOHN CHRISTOPH ,  SCHARFE THOMAS ,  LORTZ WOLFGANG

    IPC: B41M5/52 ,  C09C1/30 ,  C09D1/02 ,  C09D5/02 ,  C09D11/02 ,  G03F7/075

    Abstract: Stable, aqueous dispersion containing powders A and B,-wherein powder A is an amorphous silicon dioxide powder having an average particle diameter of 0.05 to 0.7 mum and a BET surface aa of 5 to 50 m 2 /g, and-wherein powder B is a metal oxide or non-metal oxide powder consisting of aggregates of intergrown primary particles and displays a primary particle size of 5 to 50 nm and a BET surface area of 50 to 400 m 2 /g. Coating slip to form an ink-absorptive coating using the dispersion and at least one hydrophilic binder. Absorptive medium using the coating slip and a support.

    DISPERSION, COATING COMPOSITION AND RECORDING MEDIUM
    45.
    发明专利
    DISPERSION, COATING COMPOSITION AND RECORDING MEDIUM 未知

    公开(公告)号：CA2422979A1

    公开(公告)日：2003-09-22

    申请号：CA2422979

    申请日：2003-03-21

    Applicant: DEGUSSA

    Inventor： SCHARFE THOMAS ,  LORTZ WOLFGANG ,  BATZ-SOHN CHRISTOPH

    IPC: B41M5/00 ,  B01J13/00 ,  B05D5/04 ,  B41M5/50 ,  B41M5/52 ,  C09C1/00 ,  C09C1/28 ,  C09D7/12 ,  C09D17/00 ,  C09D201/00 ,  B01F17/54 ,  B41J2/01

    Abstract: Stable, aqueous dispersion containing between 20 and 80 wt.% of metal oxide and/or non-metal oxide powders, which are present in the dispersion in the form of aggregates of primary particles, whereby the average diameter of the aggregates is between 10 nm and 300 nm and the average diameter of the primary particles is between 5 and 50 nm, characterised in that the powders comprise at least two types of powder, whereby the powder types at a given pH of the dispersion display the same surface charge sign and have a zeta potential that gives rise to an electrostatic repulsion between the particles that is greater than the van der Waals attraction between the powders and the average diameters of the primary particles differ by a factor of at least 1.5 between two powder types and in the dispersion the average aggregate diameter of the second and additional powder types displays 60 to 150% of the size of the first powder type and each powder type is present in the dispersion in a quantity of at least 1 wt.%. Coating composition produced with this dispersion and containing at least one hydrophilic binder. An recording medium containing this coating composition.

    46.
    发明专利
    未知

    公开(公告)号：DE10045269A1

    公开(公告)日：2002-03-28

    申请号：DE10045269

    申请日：2000-09-13

    Applicant: DEGUSSA

    Inventor： KRAFCZYK ROLAND ,  DESCHLER ULRICH ,  MICHEL RUDOLF ,  BATZ-SOHN CHRISTOPH

    IPC: C07F7/18

    Abstract: Production of yellow bis-(3-(triethoxysilyl)-propyl)polysulfane (average sulfur chain length less than 4 and iodine color number no greater than 10 mg iodine/100 ml) comprises mixing neutral chloropropyltriethoxysilane with chloropropyltrichlorosilane and reaction with sodium sulfide and sulfur, disodium tetrasulfide and Nas2S or disodium trisulfide and Na2S in ethanol. A process for the production of yellow bis-(3-(triethoxysilyl)-propyl)polysulfone having an average sulfur chain length of less than 4 and an iodine color number of no greater than 10 mg iodine/100 ml comprises mixing neutral chloropropyltriethoxysilane with chloropropyltrichlorosilane followed by reaction with sodium sulfide (Na2S) and sulfur, disodium tetrasulfide (N2S4) and Nas2S or disodium trisulfide (Na2S3) and Na2S in ethanol.

    METHOD OF OBTAINING YELLOW BIS(3-[POLYTRIETHOXYSILYL]PROPYL)SULPHANE
    47.
    发明专利
    METHOD OF OBTAINING YELLOW BIS(3-[POLYTRIETHOXYSILYL]PROPYL)SULPHANE 未知

    公开(公告)号：PL349619A1

    公开(公告)日：2002-03-25

    申请号：PL34961901

    申请日：2001-09-12

    Applicant: DEGUSSA

    Inventor： KRAFCZYK ROLAND ,  DESCHLER ULRICH ,  MICHEL RUDOLF ,  BATZ-SOHN CHRISTOPH

    IPC: C07F7/18

    Abstract: Production of yellow bis-(3-(triethoxysilyl)-propyl)polysulfane (average sulfur chain length less than 4 and iodine color number no greater than 10 mg iodine/100 ml) comprises mixing neutral chloropropyltriethoxysilane with chloropropyltrichlorosilane and reaction with sodium sulfide and sulfur, disodium tetrasulfide and Nas2S or disodium trisulfide and Na2S in ethanol. A process for the production of yellow bis-(3-(triethoxysilyl)-propyl)polysulfone having an average sulfur chain length of less than 4 and an iodine color number of no greater than 10 mg iodine/100 ml comprises mixing neutral chloropropyltriethoxysilane with chloropropyltrichlorosilane followed by reaction with sodium sulfide (Na2S) and sulfur, disodium tetrasulfide (N2S4) and Nas2S or disodium trisulfide (Na2S3) and Na2S in ethanol.

    Process for joining two solid bodies and the resulting structural element
    48.
    发明专利
    Process for joining two solid bodies and the resulting structural element 未知

    公开(公告)号：SG73637A1

    公开(公告)日：2000-06-20

    申请号：SG1999001952

    申请日：1999-04-27

    Applicant: DEGUSSA

    Inventor： BATZ-SOHN CHRISTOPH ,  KRAUTER GERTRUD ,  GOSELE ULRICH

    IPC: C09J5/04 ,  C04B37/00 ,  C08L83/04 ,  C09J5/02 ,  C09J5/06 ,  H01L21/58

    Abstract: Bonding smooth surfaces of 2 solids together using organo-silicon compound comprises providing both surfaces with a mono-molecular film of a bis(trialkoxysilyl)alkyldi- to hexa-sulfane (I) and bringing the surfaces together. Bonding the smooth surface of 2 solids together using organo-silicon compounds comprises providing both surfaces with a mono-molecular film of a bis(trialkoxysilyl)alkyl di- to hexa-sulfane of formula (I) and bringing the surfaces together. Sy((CH2)xSi(OR)3)2 (I) R = methyl, ethyl or propyl x = 1 - 4 y = 2 - 6 An Independent claim is also included for a composite structure comprising 2 solids bonded in this way.

    SULFANYL SILANES, PROCESS FOR THEIR MANUFACTURE AND THEIR USE
    49.
    发明专利
    SULFANYL SILANES, PROCESS FOR THEIR MANUFACTURE AND THEIR USE 未知

    公开(公告)号：SK122999A3

    公开(公告)日：2000-06-12

    申请号：SK122999

    申请日：1999-09-10

    Applicant: DEGUSSA

    Inventor： BATZ-SOHN CHRISTOPH ,  LUGINSLAND HANS-DETLEF

    IPC: C07F7/02 ,  C07F7/18 ,  C08K3/36 ,  C08K5/54 ,  C08K5/548 ,  C08L21/00

    Abstract: A rubber mixture containing rubber, filler, especially precipitated silicic acid and optionally other rubber adjuvants, and at least one sulfanyl silane, in quantity 0.1-15 preferably 5-10 wt. %, relative to the amount of oxygenic filler is new. The sulfanyl silane has the formula (I): X X X Si-A-S-SiR R R (I) R -R each = H, 1-8C alkyl, 1-8C alkoxy, 1-4C haloalkyl, aryl, 7-16C aralkyl, halogen, A-S-SiR R R , R -R each = H, 1-16C alkyl, 1-16C alkoxy, 1-16C haloalkyl. aryl, 7-16C aralkyl, halogen, X X X -A-S, A = 1-16C alkyl, linear or branched, optionally substituted with 1-4C alkyl, 1-4C alkoxy, halogen, nitrile, 1-4C haloalkyl, NO2, 1-4C thioalkyl, NR R , -A-S-SiR R R , or X X X -A-, aryl, or 7-16C aralkyl. Independent claims are included for: (1) Preparation of sulfanyl silanes of formula (I) by reaction of a corresponding mercaptosilane X1X2X3Si-alkyl-SH with chlorosilanes Cl-SiR1R2R3 in the presence of an adjuvant, e.g. triethylamine or other amine in an organic solvent, e.g. an alkane, and boiling of the mixture to complete the reaction. The solvent is then distilled off, and the solid hydrochloride of the adjuvant base is filtered off; and (2) a rubber mixture containing oxygenic filler, especially precipitated silicic acid, and optionally other rubber adjuvants, and at least one sulfanyl silane in amount 0.1-15 wt. % relative to the amount of oxygenic filler.

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