Formation of oligomeric organophosphorus compositions with improved color
US6107507A · kind A · utility
2Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 10, 1999 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Sep 10, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/4075
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An aryl group containing phosphite, such as triphenyl phosphite, can be added to a reaction mixture comprising an organophosphorus compound, phosphorus pentoxide and an alkylene oxide, optionally in the presence of a reagent for the incorporation of hydroxy functionality in the final product. The aryl group containing phosphite is employed to improve the color characteristics of the resulting oligomeric organophosphorus composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.