PROCESS FOR THE PREPARATION OF A TREATED MINERAL FILLER PRODUCT, THE OBTAINED MINERAL FILLER PRODUCT AND ITS USES

• Main Authors: PATRICK A.C. GANE, RENE BURKHALTER, MATTHIAS BURI
• Format: Patent
• Language: English; Spanish
• Published: 30.10.2009
• Subjects: ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; PREPARATION OF CARBON BLACK; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The present invention relates to the domain of mineral filler treatment processes. The process for the preparation of a treated mineral filler product comprises the following steps: (a) treating at least one dry mineral filler with at least one Group II or Group III salt of a C8 to C24 aliphatic monocarboxylic acid to produce an intermediate mineral filler product; followed by (b) treating the intermediate mineral filler product of step (a) with at least one C8 to C24 aliphatic monocarboxylic acid to produce a treated mineral filler product. Applications in particular to prepare treated mineral filler products (such as Ca carbonate) to be used in plastic applications such as in polypropylene (PP) - or polyethylene (PE) - based breathable or extrusion coating film applications. La presente invención se refiere al ámbito de los procesos de tratamiento de cargas minerales. El proceso para preparar la carga mineral tratada consta de los siguientes pasos: (a) tratar al menos una carga mineral seca con al menos una sal del Grupo II o del Grupo II de un ácido monocarboxílico alifático C8 a C24 para producir una carga mineral intermedia; y, a continuación, (b) tratar la carga mineral intermedia del paso (a) con al menos un ácido monocarboxílico alifático 08 a 024 para producir una carga mineral tratada. Aplicaciones en particular para preparar cargas minerales tratadas (como carbonato cálcico) para su uso en aplicaciones plásticas como aplicaciones de películas protectoras extrusionadas o transpirables a base de polipropileno (PP) o de polietileno (PE).