Process controlled a material surface solid filler and additives to produce a material filler product treated surface chemical reaction

摘要

A process for preparing a material filler product surface treated with succinic anhydride (s), the process comprising comprising at least the steps of: a) Providing at least one filler containing calcium carbonate having i) a value of the average particle size in d50 weight in the range from 0.1 .mu.m to 7 .mu.m 5, ii) a top cut (d98) of = 15 microns, iii) a specific surface area (BET) from 0, 5 to 150 m2 / g measured by the method BET nitrogen, and iv) a total content of residual humidity from 0.01 wt% to 1 wt%, based on the total dry weight of at least one filler containing calcium carbonate, b) providing at least one monosubstituted succinic anhydride and optionally at least monosubstituted succinic acid in an amount from 0.1 to 3% by weight, based on the total dry weight of the at least one material load containing calcium carbonate of step a) C) contacting the surface of at least one filler containing calcium carbonate of step a) under mixing, in one or more steps, with the at least one monosubstituted succinic anhydride and at least one acid succinic optionally monosubstituted step b) such a treatment layer comprising at least one monosubstituted succinic anhydride is formed and at least one succinic acid optionally monosubstituted and / or product (s) salt reaction (s ) thereof on the surface of said at least one filler containing calcium carbonate of step a), wherein the temperature before and / or during the step of contacting c) is adjusted so that the temperature is at least 2 ° C above the melting point of at least monosubstituted succinic anhydride and at least one optional monosubstituted succinic acid.