Patent ID: 6872854
Filing Date: 2005-03-29
Classification: C08K,C09K,Y10T

Abstract:
1. A method of preparing a stabilizer complex which comprises reacting: a) a ketone of the structure:  where R b) an ester of the structure:  where R c) a base selected from the group consisting of calcium oxide, calcium hydroxide, barium oxide, barium hydroxide, potassium hydroxide, potassium oxide, sodium hydroxide and sodium oxide in the presence of a solvent selected from the group consisting of an aromatic hydrocarbon, alkyl or aryl ether, dialkylsulfoxide, or the same ester used for the reaction, to form a reaction mixture containing a stabilizer complex, d) contacting the reaction mixture containing the stabilizer complex with water, organic solvent or combination thereof to precipitate the stabilizer complex from the reaction mixture; and e) recovering the stabilizer complex, which is a salt of a metal selected from the group consisting of sodium, potassium, calcium and barium.