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Patent Agency Ranking
公开(公告)号：DE59703332D1
公开(公告)日：2001-05-17
申请号：DE59703332
申请日：1997-02-13
Applicant: DEGUSSA
Inventor： BARTHEL THOMAS , GOERL DR , PARKHOUSE ALAN , EICHENAUER KURT
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).
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公开(公告)号：DE59708357D1
公开(公告)日：2002-11-07
申请号：DE59708357
申请日：1997-07-02
Applicant: DEGUSSA
Inventor： GOERL DR , LAMBERTZ HORST
Abstract: The invention relates to the organic silanpolysulphane mixture of the general formula (RO)3 Si (CH2)xS-Sz-S(CH2)xSi (ОR)3 (I) where R – linear or branched C1-8 alkyl, in particular C1-3 alkyl X – the whole number 1-8 z – the whole number 0-6; the total organic silanpolysulphane with z=0 or z=1 representing at least 80 mass % in the mixture providing that the fraction with z=0 is below 80% while the fraction with z equal 2 through 6 does not exceed 20%. The invention relates also to the rubber compositions on the basis of these mixtures in particular for the tracks of the tire protectors.
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公开(公告)号：DE50205335D1
公开(公告)日：2006-01-26
申请号：DE50205335
申请日：2002-08-27
Applicant: DEGUSSA
Inventor： GOERL DR , SCHMITT MATTHIAS , STOBER DR
IPC: C08J3/16 , C08J3/12 , C08J3/215 , C08K3/36 , C08K9/06 , C08L21/00 , C08L21/02 , C09C1/30 , C09C3/12
Abstract: Preparation of silicate and/or oxygenic filler-containing rubber powder or granulate, based on aqueous rubber emulsion or latex, involves suspension of silicate and/or filler, polysiloxane hydrophobizing agent and nonionic surfactant in water, adjustment of the pH to 2.5-7, separation of the deposited rubber powder from the solid particles, and drying the powdered or granulated product to a moisture content of less than 3%. A process for preparation of silicate and/or oxygenic filler-containing rubber powder or granulate based on aqueous rubber emulsion or latexes involves: (a) suspension of a silicate and/or oxygenic filler, polysiloxane hydrophobizing agent(s) (in amount 0.5-7% relative to the filler) and nonionic surfactant(s) (in amount 0.1-2% relative to the filler) at 10-60 degrees C in water, giving a suspension of density 0.5-5%, (b) addition of the rubber latex emulsion to the filler suspension with stirring, (c) adjustment of the pH of the aqueous mixture with an acid, preferably sulfuric acid or aluminum sulfate to a pH of 2.5-7, (d) separation of the deposited rubber powder from the process water by, for example, solid/liquid separation of the solid particles, (e) molding of the filter cake, and (f) drying of the powdered or granulated product to an end moisture content of less than 3%.
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公开(公告)号：DE59610840D1
公开(公告)日：2004-01-15
申请号：DE59610840
申请日：1996-04-23
Applicant: DEGUSSA
Inventor： DESCHLER DR , GOEBEL DR , GOERL DR , LAMBERTZ HORST
Abstract: Mixts. of organosilane cpds. of formula (I) and (II) are claimed (M): Ä(RO)3Si(CH2)3SxÜ2 (I) and Ä(R'O)3Si(CH2)y-CH3 (II), where R, R' = 1-8C alkyl (same or different); x = 1-4; and y = 1-19; in amts. of 40-95 wt% (I) and 5-60 wt% (II). Also claimed are vulcanisable moulding materials and rubber mixts. contg. 10-250 pts. silicate filler and 0-150 pts. carbon black to 100 pts. rubber, plus 0.1-20 pts. mixt. (M) to 100 pts. silicate filler.
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公开(公告)号：DE59710402D1
公开(公告)日：2003-08-14
申请号：DE59710402
申请日：1997-05-14
Applicant: DEGUSSA , RHG ROHSTOFFHANDELSGESELLSCHAF
Inventor： GOERL DR , LAMBERTZ HORST , PARKHOUSE ALAN
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