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    41.
    发明专利
    未知

    公开(公告)号：DE19609619A1

    公开(公告)日：1997-09-18

    申请号：DE19609619

    申请日：1996-03-12

    Applicant: DEGUSSA

    Inventor： BARTHEL THOMAS ,  GOERL UDO DR ,  PARKHOUSE ALAN ,  EICHENAUER KURT

    IPC: C08K3/34 ,  C08K9/06 ,  C08L21/00 ,  C09C1/28 ,  C09C1/30 ,  C09C3/00 ,  C09C3/12 ,  C08J3/24

    Abstract: Low-dusting, readily-dispersible granules (I) based on precipitated silicate fillers (II) modified with organosilicon compounds of formula ÄR n(R-(CH2)iO)3-nSi-(CH2)y-(CH2)zÜqB (III), in which B = -SCN, -SH, -Cl, -NH2 (if q = 1) or -Sx- (if q = 2); R = H or 1-4C alkyl; R = 1-4C alkyl; n = 0, 1 or 2; y = 0-19; z, i = 1; x = 2-8; and in which the degree of reaction of the alkoxy groups is expressed as the ratio of integrated C-NMR signals as follows: when R is not H, (CH2)i/(CH2)z = not more than 0.4 for q = 2 or not more than 0.15 for q = 1; when R = H, ÄR-(CH2)iÜ/(CH2)z = not more than 0.4 for q = 2 or not more than 0.15 for q = 1. Also claimed is (i) a process for the production of (I), and (ii) vulcanised rubber mixtures containing (I).

    46.
    发明专利
    未知

    公开(公告)号：DE59105359D1

    公开(公告)日：1995-06-08

    申请号：DE59105359

    申请日：1991-03-01

    Applicant: DEGUSSA

    Inventor： WOLFF SIEGFRIED DR ,  GOERL 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.

    48.
    发明专利
    未知

    公开(公告)号：DK0442143T3

    公开(公告)日：1994-04-18

    申请号：DK90125475

    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.

    49.
    发明专利
    未知

    公开(公告)号：DE4013258A1

    公开(公告)日：1991-10-31

    申请号：DE4013258

    申请日：1990-04-26

    Applicant: DEGUSSA

    Inventor： WOLFF SIEGFRIED DR ,  GOERL 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.

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