Patent ID: 9139735
Filing Date: 2015-09-22
Classification: C01P,C08K,C09C

Abstract:
1. A film material comprising a treated mineral product, wherein the treated mineral filler product is 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/m (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.