Supported catalysts synthesized via the interaction of Mg(OEt)2 with TiCl4 in the presence or absence of an internal stereoregulating donor (di-n-butyl phthalate). with different solvents (chlorobenzene. n-undecane. n-heptane) at different titanation temperatures have been studied by a set of physicochemical methods. https://hollandscountryclothinges.shop/product-category/ear-plugs/