Alkaline earth-based alkoxylation catalysts

Details Alkaline earth-based alkoxylation catalysts Alkaline earth-based alkoxylation catalysts

B - Operations, Transporting

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B01J 31/00 (2006.01) B01J 23/02 (2006.01) B01J 23/06 (2006.01) C07C 41/00 (2006.01) C07C 43/00 (2006.01) C07C 43/11 (2006.01) C07C 43/18 (2006.01) C07C 43/20 (2006.01) C07C 59/125 (2006.01) C07C 59/305 (2006.01) C07C 59/58 (2006.01) C07C 309/00 (2006.01)

Patent

CA 2577935

Provided herein are catalysts useful in enabling and promoting the insertion of alkylene oxides into ester linkages. The esters employed as a substrate to be alkoxylated include esters of fatty acids, such as methyl esters of C14 to C22 fatty acids, and mono-, di-, and tri-esters of glycerine, including vegetable oils, animal fats, and plant oils. A catalyst according to the invention includes at least two alkaline earth compounds, which may include any known stable compounds of the alkaline earths, and optionally contains one or more additional materials such as a carboxylic acid or a polyalkylene glycol having a molecular weight between about 100 and 1500 or a C1 - C10 alkyl-capped polyalkylene glycol having molecular weight between about 100 and 1500, which has been acidified with a strong mineral acid. The preferred alkaline earths employed are salts and compounds of magnesium and calcium.

L'invention porte sur des catalyseurs permettant et facilitant l'insertion d'oxydes d'alkylène dans des liaisons esters. Les esters servant de substrats à alcoxyler comprennent des esters d'acides gras tels que des esters méthyles d'acides gras C14 à C22 et des mono-, di-, et tri-esters de glycérine dont des huiles végétales, des graisses animales et des huiles de plantes. Un tel catalyseur contient au moins deux composés de terres alcalines pouvant inclure un quelconque de ces composés stables et facultativement une ou deux autres substances telles que l'acide carboxylique ou un polyalkylène glycol C1 - C10 à coiffe alkyle d'un poids moléculaire compris entre environ r 100 and 1500 acidifié par un acide minéral fort. Les terres alcalines utilisées le sont de préférence sous forme de sels et composés de magnésium et de calcium.

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