US 9,809,657 B2
Low-viscosity concentrated solutions of alkaline earth metal alkoxides in aprotic solvents and processes for preparation thereof
Ulrich Wietelmann, Friedrichsdorf (DE); Armin Stoll, Hemsbach (DE); Florian Kiefer, Goslar (DE); and Ute Emmel, Frankfurt am Main (DE)
Assigned to ALBEMARLE GERMANY GMBH, Frankfurt am Main (DE)
Appl. No. 14/436,710
Filed by Rockwood Lithium GmbH, Frankfurt am Main (DE)
PCT Filed Oct. 25, 2013, PCT No. PCT/EP2013/072348
§ 371(c)(1), (2) Date Apr. 17, 2015,
PCT Pub. No. WO2014/064233, PCT Pub. Date May 1, 2014.
Claims priority of application No. 10 2012 219 494 (DE), filed on Oct. 25, 2012.
Prior Publication US 2015/0291708 A1, Oct. 15, 2015
Int. Cl. B01J 21/00 (2006.01); B01J 23/00 (2006.01); B01J 25/00 (2006.01); B01J 29/00 (2006.01); B01J 31/00 (2006.01); C08F 4/52 (2006.01); C07C 41/26 (2006.01); C07B 61/00 (2006.01)
CPC C08F 4/52 (2013.01) [C07B 61/00 (2013.01); C07C 41/26 (2013.01)] 11 Claims
 
1. A solution comprising a mixed alkaline earth alkoxide compound of formula M(OCH2R6)2-a-b(OR7)a[(CHR8)nOR9]b in a mixture with an aluminum compound of formula Al(OCH2R6)3-c-d(OR7)c[O(CHR8)—OR9]d in an aprotic solvent, wherein
M is an alkaline earth metal selected from Mg, Ca, Ba, and Sr;
OCH2R6 is an alkoxide radical composed of at least 3 and a maximum of 40 C atoms having a branch in the 2-position, relative to O;
R7 is an alkyl radical containing 2-15 C atoms which is either linear or has a branch at the 3- or higher position relative to O;
O(CHR8)nOR9 is an alkoxide radical in which
R8 is an alkyl radical containing 1-6 C atoms which is either linear or has a branch at the 3- or higher position relative to O;
R9 is an alkyl radical containing 2-15 C atoms which is either linear or has a branch;
n is an integer between 1 and 4;
a+b≤2;
c+d≤3;
a and c are from 0.01 to 0.8; and
b and d each range from 0.1 to 1.99; and
wherein the solution has a content of aluminum relative to the alkaline earth metal in the range between 0.2 and about 20 mol %.