Core/shell microcapsules obtained from a rubber-containing core and a shell from a first polymer and from a second different polymer useful for rubber vulcanization

摘要

Microcapsules obtained from at least one rubber-containing core and a shell from a first polymer, with at least one coating of the first polymer on the microcapsule surface and a different second polymer and/or a low molecular inorganic or organic compound as a lubricant- or removed material layer (RML)(sic) to decrease adhesive friction is new. An Independent claim is included for a method of preparing the microcapsules from one or more rubber additive containing cores, a shell from a first polymer and at least one lubricant or removed material layer (RML)(sic) by the steps:(a) dispersion of the rubber additive in prepolymer solution forming the first polymer, (b) curing of the microcapsules by addition of catalyst and/or by raising the temperature, (c) separation of at least one lubricant or RML from the second polymer and/or low molecular inorganic or organic compound on the microcapsule surface.