Composite particles comprising an organic polymer core coated with water-insoluble hydrated calcium and-or magnesium silicate, used in mineral binder compositions, e.g. concrete or mortar for building applications

摘要

Composite particles (P) with (A) an organic polymer core at least partly coated with (B) one or more layers of a mineral phase comprising water-insoluble hydrated alkaline earth silicate(s) such as insoluble hydrated calcium or magnesium silicate or a mixed phase thereof. Independent claims are also included for (1) a method (M2) for the production of a suspension of (P) by mixing an aqueous suspension (latex) of water-insoluble polymer (A) with an alkaline earth hydroxide or halide (chloride, bromide, fluoride or iodide) and adding a water-soluble alkali silicate or alkaline earth silicate (2) a method (M2) for the production of (P) with several layers of (B), by repeating M1 several times (3) mineral binder compositions containing (P).