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Carrier based on granules produced from pyrogenically prepared silicon dioxides

A technology of silica and pyrolysis, applied in the direction of silica, silica, dissolution, etc., can solve the problems of poor fluidity of loaded materials, expensive cleaning, high water content, etc.

Inactive Publication Date: 2006-09-20
EVONIK DEGUSSA GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Disadvantages of the above-mentioned silica particles used as supports are their high water content, too low purity and poor fluidity of the supported substances
The use of silicates, silica sols, or silicates as starting compounds often yields products that are not pure enough for their intended intended use as they contain large amounts of salt and require expensive cleaning

Method used

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  • Carrier based on granules produced from pyrogenically prepared silicon dioxides
  • Carrier based on granules produced from pyrogenically prepared silicon dioxides
  • Carrier based on granules produced from pyrogenically prepared silicon dioxides

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[1147] Preparation of particles based on silica prepared by pyrolysis

[1148] Silica AEROSIL 300 prepared by a pyrolysis method commercially available from Degussa AG was used as the raw material compound.

[1149] The silica prepared by pyrolysis is completely dispersed in demineralized water. The dispersion device used here is based on the rotor / stator principle. The resulting suspension is spray dried. The resulting products are separated by filters or cyclones. The spray particles are heated in a muffle furnace.

[1150] The preparation parameters are shown in Table 1.

[1151] Raw material SiO 2

Embodiment

[1153] 1. Raw materials

[1154] 1.1 Model liquid

[1155] According to the field of use of the present invention, vitamin E acetate, silicone oil, paraffin oil and eucalyptus oil are used as model liquids. For example, vitamin E acetate is used in animal and human nutrition, and eucalyptus oil is used as a fragrance or fragrance.

[1156] Example

Products

product name

manufacturer

1

Vitamin E Acetate

BASF

2

Silicone oil

Silicon Fluid 345

Dow Corning

3

Paraffin oil

Paraffinl dünnflüssig

Merk

4

Eucalyptus oil

Oleum Eucalypti

80-85%

Caelo

[1157] Silica

Loss on drying

(Wt%)

Burning weightlessness

(Wt%)

SiO 2 Content

(Wt%)

Tilt angle

(°)

Bulk density

(g / l)

Example 1-4

AEROPERL  300 / 30

(Degussa)

1.7

2.1

99.9

34.97

232.8

Comparative example 1...

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PUM

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Abstract

The invention relates to the use of granules produced from pyrogenically prepared silicon dioxides as carriers for substances chosen from the group consisting of foodstuffs additives, such as dyestuffs, antioxidants, preservatives, emulsifiers, gelling agents, thickeners and binders, stabilizers, alkalis, acids, salts, antilumping agents, flavour intensifiers, sweeteners, aromas, feedstuffs additives, chemical intermediates and plant protection agents.

Description

Technical field [0001] The present invention relates to the use of particles of pyrogenic silica as a carrier. In addition to various other functions, the particles also serve as food additives such as dyes, antioxidants, preservatives, emulsifiers, gelling agents, thickeners and binders, stabilizers, alkalis, acids, and salts. , Anti-caking agents, flavoring agents, sweeteners, spices, feed additives, chemical intermediates and plant protection agents such as herbicides, insecticides, fungicides and other substances as carriers. Background technique [0002] The use of spherical silica particles as a carrier, such as a carrier for feed additives is well known (Sipernat 22, Bulletin Pigments No. 31, "Synthetic Silica as a Flow Acid and Carrier Substance" Degussa AG). [0003] The disadvantages of the aforementioned silica particles used as carriers are their high water content, low purity, and poor fluidity of the loaded material. When silicate, silica sol,...

Claims

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Application Information

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IPC IPC(8): C01B33/18B01J20/10C09C1/30C09K23/54
CPCC01P2006/12C01P2006/14C09C1/3081C01P2006/10C01P2006/11C01P2004/61B01J20/103
Inventor 彼得·诺伊格鲍尔斯特芬·哈森察尔克劳斯·彼得·德雷克塞尔于尔根·迈尔
Owner EVONIK DEGUSSA GMBH
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