The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 1992
Filed:
Oct. 16, 1990
Jacques Garapon, Lyons, FR;
Isabelle Muller, Serezin du Rhone, FR;
Remi Touet, Saint Egreve, FR;
Catherine Huet, Chalon sur Saone, FR;
Bernard Damin, Oullins, FR;
Institut Francais du Petrol, Rueil Malmaison, FR;
L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des, , US;
Elf France, Courbevoie, FR;
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.