| 摘要 |
<p>Pyrogenically produced silanized silica (I) having physical and chemical data such as grindometer value of less than 20 mu m and tamper density of 25-35 g/l, is new. Independent claims are included for: **LISTN**the preparation of (I); and #a silicone rubber mass comprising 0.5-60 wt.% of pyrogenically produced silanized silica and 40-99.5 wt.% of organo polysiloxane of formula (ZnSi(R)3-n-O-[Si(R)2O]x-Si(R)3-n-Z1n).**/LISTN** **MAR**R = alkyl, alkoxy-, aryl-, oxime-, acetoxy- or 1-50C-alkyl (optionally substituted with O, S, F, Cl, Br, I or polystyrene-, polyvinylacetate-, poly(meth)acrylate- or polacrylnitrile residue with 40-10000 repeating units); #Z = OH, Cl, Br, acetoxy, amino, aminoxy, oxime, alkoxy-amido, alkenyloxy, acryloxy or phosphate, where the organic residue consists of 2-20C; #Z1 = oxime, alkoxy, acetoxy, amino or amido; #n = 1-3; and #X = 100-15000.**/MAR**</p> |
