Process for producing briquetted and pressed granular material and use thereof
AssigneeBayer Aktiengesellschaft
InventorsGünter Linde, Olaf Schmidt-Park, Manfred Eitel, Lothar Steiling
Life of this patent
Estimating the term…
Abstract
The present invention relates to a process for producing briquetted and pressed granular material and the use thereof for coloring building materials, such as concrete and asphalt, and organic media, such as paint systems, plastics and colored pastes.
Claims23
A process for producing granular material from inorganic pigments and auxiliary substances, comprising the steps of
- a) mechanically mixing one or more inorganic pigment powders with one or more auxiliary substances promoting processability wherein the amount of one or more auxiliary substances is up to 10 wt % referred to the pigment used,
- b) subjecting this mixture to a compacting step to produce a compacted product,
- c) comminuting the compacted product to produce a comminuted product,
- d) dividing the comminuted product into two or more fractions,
- e) removing a first fraction of particles as product and recycling the other fraction or at least one of the other fractions back into the process.
A process for producing granular material from inorganic pigments and auxiliary substances, comprising the steps of
- a) mechanically mixing one or more inorganic pigment powders with one or more auxiliary substances promoting processability to produce a cohesive, viscous, non-slurry homogeneous mixture,
- b) subjecting this mixture to a compacting step to produce a compacted product,
- c) comminuting the compacted product to produce a comminuted product,
- d) dividing the comminuted product into two or more fractions,
- e) removing a first fraction of particles as product and recycling the other fraction or at least one of the other fractions back into the process.
A process for producing granular material from inorganic pigments and auxiliary substances, comprising the steps of
- a) mechanically mixing one or more inorganic pigment powders with one or more auxiliary substances promoting processability wherein the amount of one or more auxiliary substances selected from a group consisting of salts selected from among the phosphates, silicates, aluminates, borates;
- polysaccharides and cellulose derivatives, oils from biological cultivation, refined petroleum oils, alkylphenols, glycols, polyethers, polygylcols, polyglycol derivatives, protein fatty acid condensation products, alkylbenzenesulphonates, alkylnaphthalenesulphonates, lignosulphonates, sulphated polyglycol ethers, melamine formaldehyde condensates, gluconic acid, and polyhydroxy compounds is up to 10 wt% referred to the pigments used,
- b) subjecting the mixture to a compacting to produce a compacted product,
- c) comminuting the compacted product to produce a comminuted product,
- d) dividing the comminuted product into two or more fractions, and
- e) removing a first fraction of particles as product and recycling the other fraction or at least one of the other fractions back into the process.
Dependencies are inferred from the claim text.