| abstract |
Functionalized granulated silicic acid, characterized in that - the pore volume of Hg (<4 μm) is more than 0.80 ml / g, - the dQ3 value> = 10% is more than 400 μm, - the dQ3 value> = 90% is less than 3000 μm, - the proportion of the d50 value without ultrasound action with respect to the d50 value after 3 min of ultrasound action is <4.00, the measurement being made on a fraction of particles from 400 to 500 μm with The LS 230 laser diffraction apparatus from Beckman Coulter, measuring range 0.04-2000 μm and Small Volume Module Plus liquid module, 120 ml from Beckman Coulter with integrated ultrasonic finger, Vibra Cell VCX 130 ultrasonic processor Sonics signature with CV 181 ultrasonic converter and 6 mm ultrasonic tip in the case of 100% amplitude in a mixture of ethanol / water, volumetric ratio 1: 1, and being - the C content a 1.0- 15.0% by weight, and this contains the functional groups Si (CH2) m-R ', (R ") xSi (CH2) m-R', Si (C H2) mR 'or (R ") xSi (CH2) m-R', with m> = 0, 1 - 20, R '> = -NH2, -NH-CH2-CH2-NH2, -N- (CH2- CH2-NH2) 2, -NH-CO-N-CO- (CH2) 5, -NH-COO-CH3, -NH-COO-CH2- CH3, -NH- (CH2) 3Si (OR) 3, -NH - (CH2) 3-CH3 or -NH-CH2-CH2-NH-CH2-CH2-NH2, R "> = alkyl, cycloalkyl, x> = 1 or 2. |