Catalytic composition comprising titanium and phosphorous, its preparation and its use for condensing an epoxide on a carboxylic acid anhydride
US5104842A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 16, 1990 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Oct 16, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2231/48
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.