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    21.
    发明专利
    未知

    公开(公告)号：ES2081544T3

    公开(公告)日：1996-03-16

    申请号：ES92118584

    申请日：1992-10-30

    Applicant: DEGUSSA

    Inventor： WOLFF SIEGFRIED DR ,  PANENKA RAINER DR ,  HADDEMAN MARINUS ,  NAKAHAMA HIDENARI

    IPC: C08J3/24 ,  C08K3/04 ,  C08K3/34 ,  C08K3/36 ,  C08K5/5419 ,  C08K5/548 ,  C08J3/20 ,  C08K9/06 ,  C08L23/00 ,  C08L23/16 ,  C08K5/54

    Abstract: The rubber mixtures of this invention contain a non-conjugated ethylene-propylene-diene rubber or a blend of a non-conjugated ethylene-propylene-diene rubber with a diene rubber, a specific alkoxy silane compound and an amorphous silicic acid having a specific surface area of between 5 and 100 m /g (BET adsorption). The vulcanisates according to the invention are prepared by vulcanisation of these rubber mixtures. The rubber mixtures of this invention have excellent dynamic properties and excellent mechanical properties, dynamic fatigue resistance and heat-aging resistance. They furthermore allow the preparation of vulcanisates having the same properties.

    22.
    发明专利
    未知

    公开(公告)号：AT125559T

    公开(公告)日：1995-08-15

    申请号：AT92121026

    申请日：1992-12-10

    Applicant: DEGUSSA

    Inventor： MEIER KARL ,  GOERL UDO DR ,  WOLFF SIEGFRIED DR

    IPC: C08J5/10 ,  C08K3/36 ,  C08K5/13 ,  C08K13/02 ,  C09C1/30

    Abstract: The invention relates to blends of resorcinol and silica which are employed as adhesion promoter for improving the adhesion between textile or metallic strengthening supports and rubber or plastics and have a greatly restricted sublimation behaviour with respect to resorcinol.

    23.
    发明专利
    未知

    公开(公告)号：ES2071852T3

    公开(公告)日：1995-07-01

    申请号：ES91103070

    申请日：1991-03-01

    Applicant: DEGUSSA

    Inventor： WOLFF SIEGFRIED DR ,  GORL UDO DR ,  MEIER KARL

    IPC: C08J3/20 ,  C08K9/00 ,  C08K9/04 ,  C08L21/00 ,  C09C1/30 ,  C09C3/04 ,  C09J109/00 ,  C09J121/00

    Abstract: A method of granulating resorcinol/silica mixtures which comprises transporting a mixture of resorcinol and precipitated silica by conveyor worms to two pressing rollers whose shafts are attached vertically above one another and whose contact pressure can be varied, compacting said mixture between said rollers, breaking up the compacted mixture with a cake breaker to obtain a granulate with minimum grain size and separating the remaining dusty portion of said mixture. The mixtures can be added to vulcanizable rubber to provide improved adhesion to rubber reinforcements.

    26.
    发明专利
    未知

    公开(公告)号：DE59003893D1

    公开(公告)日：1994-01-27

    申请号：DE59003893

    申请日：1990-12-24

    Applicant: DEGUSSA

    Inventor： WOLFF SIEGFRIED DR ,  GOERL UDO DR ,  DEUSSER HANS DR

    IPC: C08K9/00 ,  C08K9/06 ,  C08L21/00 ,  C09C1/30 ,  C09C3/12

    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.

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