Additives and functional fillers

In addition to our core markets (plastics, rubber, paints, coatings, lubricants, life sciences: pharma, nutrition, cosmetics) we supply many other industries:

  • Agrochemical industry
  • Automotive industry
  • Chemical industry
  • Dental industry
  • Electronics industry
  • Beverage industry
  • Foundry and refractory industry
  • Glass and ceramics industry
  • Leather and textile industry
  • Metallurgy
  • Paper and pulp industry

and many more.

Here we are partners for the supply of various raw materials such as additives and additive preparations, industrial minerals, processing aids, process chemicals, polymer raw materials, ingredients, functional fillers and more.

For more information, call us at +49 40 44197-0, send us an E-Mail or use our inquiry form.

Detailed information on some selected raw materials:

We supply you with thermoplastic materials in powder form. These specialities are modified thermoplastics with particle sizes of less than 100 μm, which are employed in various applications like laser sintering for the generative production of plastic parts.

Learn more!

We supply you with thermoplastic materials in powder form. These specialities are modified thermoplastics with particle sizes of less than 100 μm, which are employed in various applications like electrostatic powder coating of metals.

Learn more!

Diatomaceous earth, also known as Kieselgur, consists of the very fine silicon skeleton of dead diatoms. Because of its natural structure, diatomaceous earth has a very large surface, is chemically inert and has a very high absorption capacity. We offer natural diatomaceous earth whose content of crystalline silica is < 0.1%, calcined diatomaceous earth and flux-calcined diatomaceous earth (fluxing agent: sodium carbonate). We also have high-purity diatomaceous earth in our product portfolio which complies with USP/NF requirements.

Our diatomaceous earth mainly comes from deposits in the USA, Mexico and Spain.

Applications:

Life science applications

Our coarse-grained diatomaceous earth grades are very well suited for the use as peeling particles in creams. The grades tested in accordance with USP/NF are the ideal filling material for food supplements, particularly tablet pressing, because of their high SiO2 content of 89-99%.

Dental impression material

Because of its high water absorption capacity of approximately 200 g/l, our diatomaceous earth products guarantee rapid mixing behaviour of the impression mass and short setting phases.

Paper industry

Diatomaceous earth products with a very high Blue Light Reflectance of approximately 95, high water absorption capacity of > 200 g/l and a surface (BET) of around 2 m²/g are extremely well suited for the use as functional fillers, among other things for the production of decorating paper.

Insecticides

The sharp-edged diatom structures cut their way through the exoskeleton of, for instance, ants which then dry out. Our natural diatomaceous earth grades with a crystalline silica content of < 0.1% are safe for children and pets, too.

Catalyst carriers

Our natural, uncalcined diatomaceous earth products with a low specific content of Al2O3 and Fe2O3 are extremely well suited for the use as catalyst carriers, for instance for nickel, cobalt, copper, sulphuric acid and also for the food industry (fat catalysts).

Refractory industry

Our heat-resistant, very light diatomaceous earth grades with an apparent density of approximately 120-140 g/l are ideal functional fillers for the production of refractory materials, heat insulating boards and fireproof boards.

Centrifugal casting

By means of defined particle distribution with an average size of approximately 8 µ, our readily calcinated diatomaceous earth grades are excellent inert materials for centrifugal casting.

Your contact: Nicola Hintze, Tel.: +49 40 44197-334, Nicola.Hintze@lehvoss.de

Perlite is a volcanic obsidian rock that contains 2-5% bound water. Chemically speaking, it is an aluminium silicate which is almost as inert as silicic acid. When heated, perlite expands into very light, cellular, spherical particles. In expanded, unmilled form perlite has proven its worth as an insulation material, for instance, for tanks. Because of its thermal and acoustic insulation properties, it is a popular light, inert filler in the building material industry. In milled form perlite is primarily used as a carrier, among other things, for pesticides.

Our perlite grades are mainly produced in France, Spain and Italy from Turkish ore. Applications are:

Plaster and mortar

Because of their low apparent density of approx. 55 g/l and their excellent thermal and acoustic insulation properties, our expanded unmilled perlite grades are ideally suited as aggregates for plaster and mortar, and as extenders and absorption agents.

Carrier material for crop protection agents

Given their high absorption capacity of > 200 % by weight, our inert perlite grades are excellent carrier materials for insecticides, fungicides and fertilisers.

Your contact: Nicola Hintze, Tel.: +49 40 44197-334, Nicola.Hintze@lehvoss.de

Our calcium silicate is produced from diatomaceous earth in the USA. It is an adsorptive, synthetic silicate with an SiO2:CaO ratio of approximately 1:3. Applications are:

Dry liquid

Thanks to their very high absorption capacity (water absorption: approximately 550 % by weight, oil absorption: approximately 450 % by weight), together with a very large surface (BET) of approximately 120 m²/g our calcium silicates are excellent functional fillers, for instance for the tyre industry, particularly as melamine resin carriers.

Life science

Our calcium silicate tested in accordance with USP/NF is ideally suited as an anti-blocking agent for instance in powder and eye shadow.

Your contact: Nicola Hintze, Tel.: +49 40 44197-334, Nicola.Hintze@lehvoss.de

Micropearl are spherical, organic microbeads which can be expanded under the influence of heat into very low density flexible hollow spheres. The shell of the spheres consists of a thermoplastic copolymer into which a short-chain hydrocarbon is encapsulated. Depending on process conditions, different grades are available with expansions in the range of 100 - 250 °C. The thermally expansible hollow microspheres are used as a physical blowing agent wherever low density and high compressibility/flexibility are essential. Matting and anti-slip properties further enhance the performance spectrum of this interesting product class.

Your contact: Christian Pfichner, Tel.: +49 40 44197-479, chp@lehvoss.de