Patent ID: 9212283
Filing Date: 2015-12-15
Classification: C01P,C08K,C09C

Abstract:
1. A treated mineral filler product obtained by a 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 having a volatile onset temperature of at least 220° C.