TH34284A - Silica precipitated - Google Patents

Abstract

DC60 precipitated silica has the following chemical-physics parameters: BET surface area (DIN 66131) 400-600 square meters / g, DBP index (DIN 53601) in g / 100 g 300-360 compact density (DIN 53194) 70. -140 g / l Grindometer value (ISO 1524) 15-50 microns. Size distribution index I <1.0 measured with the Malvern instrument. Size distribution index I = d90-d10 part 2d50. This precipitated silica was prepared by grinding. Silica precipitated according to DE-A 3144299 in a grinder with self Separate type or counter-flow fluidized bed crusher before this grinding method may be added to the emulsion of Polyethylene into it. Then this precipitated silica had the following chemical-physics parameters: BET surface area (DIN 66131) 351-600 square meter / g, DBP index (DIN 53601) 300-360%, carbon content 1-8%, compact density (DIN 53194) 70-140 g / l Grindometer value (ISO 1524) 15-50 μm Size Distribution Index I <1.0 silica precipitated silica may be utilized as a masking agent in lactate systems. Tor Precipitated silicas have the following chemical-physics parameters: BET surface area (DIN 66131) 400-600 m 2 / g DBP index (DIN 53601) in g / 100 g 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 silicification. Precipitation according to DE-A 3144299 in a grinder with body Separate type or counter-flow fluidized bed crusher before this grinding method may be added to the emulsion of Polyethylene into it. And this precipitated silica has the following chemical-physics parameters: BET surface area (DIN 66131) 351-600 m 2 / 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 masking agent in lactate systems. Terre

Claims (3)

Disclaimers (all) that will not appear on the advertisement page: 1. Silica Precipitated It is characterized by chemical-physics parameters as follows: BET surface area (DIN 66131) 400-600 m 2 / g DBP index (DIN 53601) in g / 100 g 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. Process for preparing precipitated silicas with chemical-physics claims as follows: BET surface area (DIN 66131) 351-600 m 2 / 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 measured with Malvem instrument Size distribution index I = d90-d10 2d50 according to Clause 1, which is characterized by precipitation silicas with the following chemical-physical data: BET surface area according to DIN 66131 400-600 m 2 / g, DBP index according to DIN 53601 340-380 g / 100 g. Dense compact according to DIN 53194 180-220 g / l "ALPINE" seaweed reside> 63 Um 25-60% by weight is crushed using a classifier or fluid crusher. Discharge bed counter flow 3. The use of silica precipitated according to claim 1 as a masking agent in the coating system.