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    34.
    发明专利
    未知

    公开(公告)号：BR9904372A

    公开(公告)日：2000-09-26

    申请号：BR9904372

    申请日：1999-09-28

    Applicant: DEGUSSA

    Inventor： BATZ-SOHN CHRISTOPH DR ,  LUGINSLAND HANS-DETLEF DR

    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.

    38.
    发明专利
    未知

    公开(公告)号：DE50207995D1

    公开(公告)日：2006-10-12

    申请号：DE50207995

    申请日：2002-11-27

    Applicant: DEGUSSA

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

    IPC: B41J2/01 ,  C09D17/00 ,  B41M5/00 ,  B41M5/50 ,  B41M5/52 ,  C08K3/22 ,  C08K3/34 ,  C08L101/02 ,  C09C1/30 ,  C09C3/00 ,  C09D11/037 ,  D21H19/36 ,  D21H19/38

    Abstract: In dispersions of mixed oxide particles containing silicon dioxide and cationic polymer, the amount of cationic polymer can be 25% decreased by doping the silicon dioxide with 0.25 wt.% aluminum oxide without affecting the positive surface charge on the particles. A stable aqueous dispersion contains flame-hydrolytically prepared mixed oxide particles containing silicon dioxide and aluminum oxide or titanium dioxide, with a BET (Brunauer Emmett Teller) surface area between 5 and 600 m2/g, which shows a negative zeta potential, and a dissolved cationic polymer of weight average mol. wt. less than 100,000 g/mole, the dispersion having a positive zeta potential. Independent claims are also included for the following: (1) a process for preparation of the dispersion involving predispersion and final dispersion, where before predispersion the cationic polymer is included in an aqueous medium or is added during dispersion, or the mixed oxide particles and cationic polymer are added alternately; (2) a brushing on paint for formation of an ink acceptance layer using the dispersion and at least one hydrophilic binder; (3) a process for preparation of the brushing on paint by addition of the dispersion to a solution of hydrophilic binder, optionally with addition of other additives, followed by dilution to the required ratio of mixed oxide and binder and the desired total solids content; (4) an ink take up medium using a brushing on paint; and (5) a method for preparation of the ink take up medium involving application of the brushing on paint to a carrier and drying.

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