Catalytic composition comprising titanium and phosphorous, its preparation and its use for condensing an epoxide on a carboxylic acid anhydride
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United States of America Patent
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Apr 14, 1992
Grant Date -
N/A
app pub date -
Oct 16, 1990
filing date -
Oct 17, 1989
priority date (Note) -
Expired
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Abstract
The object of the invention is a catalytic composition comprising titanium and phosphorus and resulting from the contacting of at least one titanate with at least one quaternary 'onium' salt of an acid selected from the group consisting of phosphoric acid and the phosphonic acids of formula R.sup.7 H.sub.2 PO.sub.3 in which R.sup.7 is a hydrocarbon group having 1 to 38 atoms of carbon and the 'onium' remainder is a remainder of formula (R.sup.8 R.sup.9 R.sup.10 R.sup.11 M).sup.+ in which M is an element from the group VA of the periodic table of elements, preferably nitrogen or phosphorous, and R.sup.8, R.sup.9, R.sup.10 and R.sup.11, identical or different, represent each an atom of hydrogen or a hydrocarbon group having 1 to 38 atoms of carbon. This catalytic composition is utilizable for producing asters and polyesters from epoxides and carboxylic acid anhydrides.
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