Treated mineral filler products, process for the preparation...

C - Chemistry – Metallurgy – 08 – K

Patent

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Details

C08K 9/00 (2006.01)

Patent

CA 2734817

The present invention relates to treated mineral filler products comprising a) at least one mineral filler, b) a treat-ment layer located on the surface of said mineral filler(s), said treatment layer comprising at least one saturated C8 to C24 aliphatic carboxylic acid; and at least one di and/or trivalent cation salt of one or more saturated C8 to C24 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/m2 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.

La présente invention concerne des produits de charge minérale traitée comprenant a) au moins une charge minérale, b) une couche de traitement située sur la surface de ladite ou desdites charges minérales, ladite couche de traitement comprenant au moins un acide carboxylique aliphatique saturé en C8 à C24; et au moins un sel de cation divalent et/ou trivalent dun ou plusieurs acides carboxyliques aliphatiques saturés en C8 à C24, le rapport en poids de la totalité dudit ou desdits sels dacides carboxyliques aliphatiques:la totalité dudit ou desdits acides carboxyliques aliphatiques étant de 51:49 à 75:25; et ladite couche de traitement étant présente en une quantité dau moins 2,5 mg/m2 de ladite charge minérale. En outre la présente invention concerne des procédés pour préparer de tels produits de charge minérale traitée et leurs utilisations, notamment dans des applications de matières plastiques, et en particulier dans des applications de films de revêtement respirables ou formés par extrusion à base de polypropylène (PP) - ou de polyéthylène (PE).

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