Process for preparing polyalkylene glycol alkyl or haloalkyl polyphosphonates
US4092377A · kind A · utility
2Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1976 |
| Grant date | May 30, 1978 |
| Priority date | — |
| Expiry date | Nov 17, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/4075
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Polyalkylene glycol alkyl or haloalkyl polyphosphonates having the idealized formula: ##STR1## wherein R is a polyalkylene glycol residue, R' is alkyl or haloalkyl and n is 1-100, are prepared by transesterifying a tertiary phosphite with a polyalkylene glycol and rearranging the resultant polyalkylene glycol alkyl or haloalkyl polyphosphite to a polyalkylene glycol alkyl or haloalkyl phosphonate by the action of heat and an Arbuzov rearrangement catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.