Patent ID: 9447283
Filing Date: 2016-09-20
CPC Classification: B02C,C01B,C01P,C08K,C09C

Claim Text:
1. A method for producing a compound comprising a pseudolaminar silicate, which is at least one clay of the palygorskite-sepiolite group, wherein the method comprises at least the following steps: defibrillating the microfiber bundles of the at least one clay into individualized microfibers with an average size smaller than 15 microns by means of a mechanical treatment which comprises dispersing the pseudolaminar silicate in water and wet-grinding the dispersion using a device selected from: subjecting the clay to a classification process in order to separate the fraction of clay into aggregates of individualized fibers; dispersing the individualized fibers of the defibrillated clay in an organic or inorganic liquid solvent, until a stable clay gel is formed; adding to the dispersion at least one modifying agent of the clay surface; removing the solvent from the clay dispersion by means of a solid-liquid separation method and/or a drying separation method; and deagglomerating the final compound until a powdered product is obtained.