Low-Viscosity Solutions of Alkaline-Earth Metal Alkoxides In Aprotic Solvents, Method for the Production of Same and Use for the Production of Ziegler-Natta Catalysts

A solution of alkaline earth alkoxide compounds M(OCH2R6)2-a-b(OR7)a[O(CHR8)nOR9]b in mixture with a metal alkyl compound M(R10R11) with an alkaline earth metal concentration in the range of 0.2 to 1.8 mmol/g in an aprotic solvent, wherein

• M is an alkaline earth metal selected from the group consisting of Mg, Ca, Ba, and Sr;
• OCH2R6 is an alkoxide radical consisting of at least 3 and at most 40 carbon atoms with a branch in position 2 relative to the O function;
• R7 is an alkyl radical with 2-15 carbon atoms, which is either linear or has a branch in ≧position 3 relative to the O function;
• R8 is an alkyl radical with 1 to 6 carbon atoms, which is either linear or has a branch at ≧position 3 (relative to the O function;
• R9 is an alkyl radical with 2 to 15 carbon atoms, which is either linear or has a branch;
• R10 and R11 are any alkyl radicals with 1 to 15 carbon atoms;
• n is an integer from 1 to 4;
• a+b≦2 wherein a and b each have a value of 0 to 2;
• and
• the solution has a molar ratio of M(OCH2R6)2-a-b(OR7)a[O(CHR8)nOR9]b to M(R10R11) that is from 99.5:0.5 to 60:40.