Pre-crosslinked silicone elastomer particles with an organopolymer shell as a formulation component in aqueous paint preparations

摘要

Previously cross-linked silicone elastomer particles with an organopolymer sheath are used as constituents for formulating water lacquer compositions based on water-soluble or water-dilutable binders. The silicone elastomer particles contain: (a) 5 to 95 % by weight, with respect to the total weight of the copolymer, of a nuclear polymer of general formula (R2SiO2/2)x.(RSiO3/2)y.(SiO4/2)z, in which x = 5 to 99.5 % by mole, y = 0.5 to 95 % by mole, z = 0 to 30 % by mole, and (b) 5 to 95 % by weight, with respect to the total weight of the copolymer, of a sheath made of an organopolymer from mono- or polyethylenically unsaturated monomers; and R stands for the same or different monovalent alkyl or alkenyl radicals with 1 to 6 C atoms, aryl radicals or substituted hydrocarbon radicals.