TH36884B - Silica precipitated - Google Patents

Abstract

DC60 precipitated silica has the following physico-chemical parameters: BET surface area (DIN 66131) 400-600 m/g DBP index (DIN 53601) in g/100g 300-360 Compact density (DIN 53194) 70 -140 g/L, Grindometer value (ISO 1524) 15-50 µm. Size distribution index I < 1.0 measured with Malvern instrument. Size distribution index I = d90-d10. The fraction 2d50. This precipitated silica was prepared by crushing. The lyca is precipitated according to DE-A 3144299 in a crusher with a A countercurrent fluidized shaded bed granulator or granulator prior to this grinding method may be added to the emulsion of cypolyethylene as well The precipitated silica has the following physico-chemical parameters: BET surface area (DIN 66131) 351-600 m2/g DBP index (DIN 53601) 300-360% Carbon content 1-8 % Compact density (DIN 53194) 70-140 g/L, Grindometer (ISO 1524) 15-50 µm. Size distribution index I < 1.0. This precipitated silica may be used as a surface covering in lacquer systems. r Precipitated silica has the following physico-chemical parameters: BET surface area (DIN 66131) 400-600 m2/g DBP index (DIN 53601) in g/100g 300-360 Compact density (DIN 53194) 70- 140 g/l Grindometer value (ISO 1524) 15-50 um Size distribution index I < 1.0 measured with Malvern instrument Size distribution index I = d90-d10 2d50 This precipitated silica was prepared by crushing silica. Precipitated according to DE-A 3144299 in a crusher equipped with A countercurrent fluidized shaded bed granulator or granulator prior to this grinding method may be added to the emulsion of cypolyethylene as well This precipitated silica has the following physico-chemical parameters: BET surface area (DIN 66131) 351-600 m2/g DBP index (DIN 53601) 300-360% Carbon content 1-8 % Compact density (DIN 53194) 70-140 g/l, grincometer value (ISO 1524) 15-50 um, size distribution index I < 1.0. This precipitated silica may be used as a surface covering in lactate systems. the

Claims (3)

Claims (all) which will not appear on the classifieds page : 1. Precipitated Silica It is characterized by physico-chemical parameters as follows: BET surface area (DIN 66131) 400-600 m2/g DBP index (DIN 53601) in g/100g 300-360 Compact density (DIN 53194) 70- 140 g/l Grindometer value (ISO 1524) 15-50 um Size distribution index I < 1.0 measured with Malvern instrument Size distribution index I = d90-d10 2d50 2. Methods for preparing precipitated silica with physico-chemical claims are as follows: BET surface area (DIN 66131) 351-600 m2/g DBP index (DIN 53601) 300-360% Carbon content 1-8% content Dense, compact (DIN 53194) 70-140 g/L Grinchometer value (ISO 1524) 15-50 um Size distribution index I < 1.0 measured with Malvem. Size distribution index I = d90-d10 2d50 by clause. Claims 1, which is characterized by precipitating silica with the following physico-chemical data: BET surface area according to DIN 66131 400-600 m2/g DBP index according to DIN 53601 340-380 g/100 g Density Compacted according to DIN 53194 180-220 g/L "ALPINE" seam residue > 63 Um 25-60% by weight, crushed using a grinder with a classifier or a fluidized grinder. countercurrent bed 3. The use of precipitated silica according to claim 1 as a surface covering in the coating system.