Process for the preparation of metal salts of phosphoric and phosphonic acid esters
US4939285A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1988 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Jul 6, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27K2240/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Metal salts of phosphoric and phosphonic acid esters of formula ##STR1## wherein R is C.sub.1 -C.sub.4 alkoxy or straight chain or branched unsubstituted C.sub.1 -C.sub.20 alkyl or C.sub.2 -C.sub.6 alkenyl, PA1 R.sub.1 is hydrogen or C.sub.1 -C.sub.4 alkyl, PA1 X is a metal cation, and PA1 n is an integer from 1 to 3 corresponding to the valence of X, are prepared by reacting n moles of a phosphoric or phosphonic acid or an ester thereof, of formula ##STR2## wherein R, R.sub.1 and n are as defined above, with 1 mole of a metal X.sup.n, if desired with cooling. These salts can be used, for example, as flame retardants, fertilizers or emulsifiers for aqueous plastics dispersions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.