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    Mixtures of organo-polysulfanes and process for the preparation of rubber mixtures containing them
    11.
    发明专利
    Mixtures of organo-polysulfanes and process for the preparation of rubber mixtures containing them 未知

    公开(公告)号：SK283278B6

    公开(公告)日：2003-05-02

    申请号：SK96797

    申请日：1997-07-16

    Applicant: DEGUSSA

    Inventor： GORL UDO ,  LAMBERTZ HORST

    IPC: C08L19/00 ,  B60C1/00 ,  C07F7/08 ,  C07F7/18 ,  C08G77/48 ,  C08K5/548 ,  C08L7/00 ,  C08L21/00 ,  C08L83/08 ,  C08K5/54

    Abstract: Organosilane polysulphide mixture containing silicate filler A mixture (I) of organosilane polysulphides (II) of formula (RO)3Si(CH2)xS-Sz-S(CH2)xSi(OR)3 (1) is new. The mixture contains 20 wt. % or less (1) when z = 2 - 6 and less than 80 wt. % (1) when z = 0. In (1), R = 1-8C alkyl, preferably 1-3C alkyl; x = 1 - 8; and z = 0 - 6. Also claimed are (i) preparation of sulphur, sulphur donor and accelerator vulcanised rubber mixtures containing one or more natural or man-made rubber, silicate, fillers, optionally carbon black and other components, the rubber, fillers, carbon black, optionally plasticiser, anti- oxidants, activators and (I) being mixed at 160 - 200 degrees C for 3 - 15 minutes followed by the addition of vulcanisation agents at 60 - 120 degrees C and mixing for a further 2 - 10 minutes to yield sheet or strips; (ii) tyre tread compounds with a high silicic acid content containing 4 - 10 parts weight (pts. wt.) (I) to 100 pts. wt. filler.

    14.
    发明专利
    未知

    公开(公告)号：BR9100561A

    公开(公告)日：1991-10-29

    申请号：BR9100561

    申请日：1991-02-08

    Applicant: DEGUSSA

    Inventor： WOLFF SIEGFRIED ,  GORL UDO ,  DEUSSER HANS

    IPC: C08K9/00 ,  C08K9/06 ,  C08L21/00 ,  C09C1/30 ,  C09C3/12 ,  C08K5/54 ,  C08L7/02

    Abstract: Surface modification of natural or synthetic oxidic or silicate fillers (I) comprises using one or more organosilicon cpds. of formula: (R'n(RO)3-nSi-(Alc)m-(Ar)p)q(B) (I). In (I), B = -SCN (when q = 1) or -Sx- (when q = 2); R and R' = 1-4C alkyl, phenyl in which every R and R' is identical or different, R = 1-4C-alkyl-1-4C-alkoxy gp.; n = 0, 1 or 2; alc = bivalent, linear or branched 1-6C hydrocarbon; m = 0 or 1; Ar = 6-12C arylene gp.; p = 0 or 1 (p+m does not equal 0); x = 2-8. The novelty is that: (a) at least one organosilicon cpd. is intensively mixed with the filler at temps. less than 60 deg.C in a concn. of up to 3.5 x 10 power (-6) mol. trialkoxysilyl gps. on a square meter of filler surface; (b) followed by hydrophobising the homogenised mixt. in a preheated mixer, tempered bed or another suitable heated reaction vessel at temps. larger than 60 deg.C.

    20.
    发明专利
    未知

    公开(公告)号：ITTO920713D0

    公开(公告)日：1992-08-26

    申请号：ITTO920713

    申请日：1992-08-26

    Applicant: DEGUSSA

    Inventor： WOLFF SIEGFRIED ,  GORL UDO

    IPC: C08J3/24 ,  C08K5/00 ,  C08K5/36 ,  C08K5/39 ,  C08K5/40 ,  C08K5/548 ,  C08K5/58 ,  C08L21/00

    Abstract: In a process for the production of vulcanizable moulding compounds consisting of one or more natural or synthetic rubbers or polymers the quantity of accelerators from the class of thiurams and/or dithiocarbamates is reduced to half the quantity originally required through the use of 3-thiocyanatopropyl trialkoxy silanes.

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