| abstract |
The present invention relates to treated mineral filler products comprising a) at least one mineral filler, b) a treatment layer located on the surface of said mineral filler(s), said treatment layer comprising at least one saturated C 8 to C 24 aliphatic carboxylic acid; and at least one di and/or trivalent cation salt of one or more saturated C 8 to C 24 aliphatic carboxylic acid, wherein the weight ratio of all of said aliphatic carboxylic acid salt(s) : all of said aliphatic carboxylic acid(s) is from 51:49 to 75:25; and said treatment layer is present in an amount of at least 2.5 mg/m 2 of said mineral filler. Furthermore the present invention relates to processes to prepare such treated mineral filler products, and to their uses, notably in plastic applications, and especially in polypropylene (PP)- or polyethylene (PE)-based breathable or extrusion coating film applications. |