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Dive into the research topics where Mario Heinemann is active.

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Featured researches published by Mario Heinemann.


Chemical Engineering & Technology | 1998

Particle Sizes of Fumed Silica

Herbert Barthel; Mario Heinemann; Michael Stintz; Benno Wessely

Fumed silica is a synthetic amorphous silicon dioxide produced by burning silicon tetrachloride in an oxygen-hydrogen flame. Surface areas range from 50-400 m 2 /g. Using particle sizing techniques, fumed silica shows micron sized particles leading to surface areas markedly lower than expected. Fumed silica appears as a fluffy solid with bulk densities down to 0.03 g/cm 3 , being invariant over the wide range of surface areas. Attempts to relate the variation of the surface area directly to the performance of fumed silica in technical applications, such as its thickening efficiency in fluids, mainly fail and remain ambiguous.


Archive | 1995

Process for the silylation of inorganic oxides

Herbert Barthel; Mario Heinemann; Franz Herrmann; August Altenbuchner


Archive | 2002

Low-silanol silica

Herbert Barthel; Mario Heinemann; Franz Grünwald; Helmut Maginot; Ute Völkel


Archive | 1988

Process for preparing highly dispersed metal oxides whose surfaces are modified by an ammonium-functional organopolysiloxane as a positive chargeable controlling agent for toners

Mario Heinemann; Johann Bindl; Johann Doppelberger; Hans Peter Dr. Dipl.-Chem. Scherm


Archive | 1998

Silicon dioxide which bears partially or fully silylated polysilicic acid chains on its surface

Herbert Barthel; Mario Heinemann


Archive | 2002

Solids surface-modified with amino groups

Herbert Barthel; Mario Heinemann; Bernd Pachaly; Andreas Bauer; Oliver Schaefer


Journal of Colloid and Interface Science | 1996

Characterization of Silylated Silicas by Inverse Gas Chromatography: Modelization of the Poly(dimethylsiloxane) Monomer Unit/Surface Interactions Using Poly(dimethylsiloxane) Oligomers as Probes

Abdelhalim Khalfi; E. Papirer; H. Balard; Herbert Barthel; Mario Heinemann


Archive | 2002

Silica with homogeneous layer of silylating agent

Herbert Barthel; Mario Heinemann; August Altenbuchner


Archive | 2001

Silylated silica with low levels of silicon-bonded hydroxy groups useful in toners, developers, charge control agents and flow improvers for powder systems and in crosslinkable polymer and resin compositions

Herbert Barthel; Mario Heinemann; Franz Gruenwald; Ute Voelkel; Helmut Maginot


Archive | 2004

Dispersion which contains at least 2 types of particles

Herbert Barthel; Johann Doppelberger; Mario Heinemann; Torsten Gottschalk-Gaudig; Stephan Loskot; Ute Voelkel

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