82.
    发明专利
    未知

    公开(公告)号:DE19844607A1

    公开(公告)日:2000-03-30

    申请号:DE19844607

    申请日:1998-09-29

    Applicant: DEGUSSA

    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.

    New oligomeric organosilicon compounds, their use in rubber mixtures and for the production of shaped articles.

    公开(公告)号:ZA994299B

    公开(公告)日:2000-01-10

    申请号:ZA994299

    申请日:1999-06-30

    Applicant: DEGUSSA

    Abstract: Oligomeric organosilicon compounds consisting of ethylene-polysulfane chains in which each ethylene unit is substituted with one triorganosilylalkyl group. Oligomeric organosilicon compounds of formula (I): R -R = H, 1-4C alkyl, alkoxy, haloalkyl or haloalkoxy, phenyl, aryl or aralkyl; Z = 0-6C alkylidene which may be attached to either of the two carbon atoms, with the free valency taken up by hydrogen; x = 1-6; n = 1-150. Independent claims are also included for: (a) a process for the production of (I) by reacting compounds of formula (II) with compounds of formula MSH or M2Sy, or with M2S and sulfur,at 20-150 degrees C and normal pressure or at up to 6 bar, optionally in presence of solvent and/or catalysts; (b) oligomeric organosilicon compounds (I) obtained by this process; (c) rubber mixtures containing (I); (d) a process for the production of rubber mixtures using rubber, other filler(s) and compounds (I); and (e) molded products obtained from these rubber mixtures. X = halogen; M = a metal ion; y = 2-6 (statistical average) The full definitions are given in the DEFINITION (Full Definitions) Field.

    84.
    发明专利
    未知

    公开(公告)号:DE19825793C1

    公开(公告)日:2000-01-05

    申请号:DE19825793

    申请日:1998-06-10

    Applicant: DEGUSSA

    Abstract: Preparation of 3-functionalized propylsilanes (I) comprises addition of allyl compounds (II) to silanes (III) at 0-200 degrees C and 800 mbar to 6 bar in the presence of a platinum catalyst that has ligand(s) containing sulfur. Preparation of 3-functionalized propylsilanes (I) comprises addition of allyl compounds of formula (II) to silanes of formula (III) at 0-200 degrees C and 800 mbar to 6 bar in the presence of a platinum (Pt) catalyst (IV) that has ligand(s) containing sulfur: X = chlorine (Cl), bromine (Br), iodine (I), fluorine (F), cyano (CN), thiocyanato (SCN), mercapto (SH), organylthio (SR), hydroxyl (OH), amino (NRR ) or organyloxy (OR); R, R = 1-6 carbon (C) alkyl or 3-7 C aryl; R , R , R = hydrogen (H), halogen, 1- C (halo)alkyl, 3-6 C allyl, 1-4 C alkoxy, phenyl, aryl or aralkyl. An Independent claim is also included for the use of (IV) in this addition reaction.

    Preparación para producir materiales refractarios

    公开(公告)号:ES2542995T3

    公开(公告)日:2015-08-13

    申请号:ES07820341

    申请日:2007-09-19

    Abstract: Preparación para producción de materiales refractarios, caracterizada por que comprende - un componente refractario particulado que tiene un diámetro medio de partícula de > 0,3 μm y - 0,1 a 3% en peso de un aglomerante particulado muy finamente que tiene un diámetro medio de partícula de 10 nm a 0,3 μm seleccionado del grupo constituido por óxido de aluminio, dióxido de titanio, dióxido de circonio y/u óxidos mixtos de los óxidos arriba mencionados, - 0 a 5% en peso de un aglomerante inorgánico, - 0 a 5% en peso de un aglomerante de fraguado hidráulico, - 0 a 5% en peso de un aglomerante orgánico, exento de sílice, - 3 a 15% en peso de agua, en donde - la proporción del componente refractario particulado es igual a 100 y los porcentajes de los materiales adicionales en la preparación están basados en el componente particulado, en donde el aglomerante particulado muy finamente es un aglomerante particulado producido pirogénicamente.

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