Patent ID: 7667066
Filing Date: 2010-02-23
Classification: C07C,C09K,C10M,C10N

Abstract:
1. A method for the production of a sterically hindered phenolic alkyl ester compound, which method comprises: a) reacting methyl acrylate with a sterically hindered alkylphenol compound in the presence of a first catalyst to form a methyl ester intermediate compound, b) reacting an alcohol having at least 2 carbon atoms with the methyl ester intermediate compound in the presence of a second catalyst to form the sterically hindered phenolic alkyl ester compound, c) forming a precipitated phosphate salt by steps consisting essentially of d) separating the precipitated phosphate salt from the sterically hindered phenolic alkyl ester compound, wherein said first catalyst and said second catalyst as charged to the reactor comprise at least one compound selected from the group consisting of alkali metal hydroxides, alkali metal alkoxides, and mixtures thereof.