PROCESS FOR THE PREPARATION OF SURFACE TREATED MINERAL FILLER PRODUCTS AND USES OF SAME

摘要

The present invention relates to a process for preparing a surface treated mineral filler product, and to its preferred use in the field of plastic applications, and in particular polypropylene (PP)- or polyethylene (PE)-based breathable or extrusion coating film applications.

主权项

1. A treated mineral filler product obtained by the process comprising the steps of:
(a) providing at least one calcium carbonate-containing mineral filler; (b) providing at least one aliphatic aldehyde having between 6 and 14 carbon atoms; (c) contacting the at least one mineral filler of step (a), in one or more steps, with the at least one aliphatic aldehyde of step (b) such that the added amount of the at least one aliphatic aldehyde corresponds to a theoretical total weight of between 0.25 mg/m2 and 5 mg/m2 on the surface of the treated mineral filler product; and (d) forming a treatment layer comprising the at least one aliphatic aldehyde and/or reaction products of the at least one aliphatic aldehyde on the surface of the at least one calcium carbonate-containing mineral filler of step (a) resulting in a treated mineral filler product.