Phosphoroamidates
US4062909A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1975 |
| Grant date | Dec 13, 1977 |
| Priority date | — |
| Expiry date | Jul 28, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/51
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds of the formulas ##STR1## WHEREIN: X represents oxygen or sulfur; PA1 Z represents the residue of a hydroxyl-containing moiety; PA1 R.sub.1 and R.sub.2 in formula (1) may be the same or different and individually represent alkyl, cycloalkyl or aryl and, together with the common nitrogen atom, represent a 5 or 6-member ring containing oxygen, sulfur or nitrogen or combination thereof; PA1 Nr.sub.1 r.sub.2 in formula (2) represent a 5 or 6-member ring containing oxygen, sulfur or nitrogen or combination thereof; PA1 n represents an integer having a value of 2 or greater and is equal to the number of hydroxyl groups on the original hydroxyl-containing moiety; Are prepared by reacting a phosphorohalidate with an amine in an organic solvent containing aqueous alkali metal or ammonium hydroxide. The compounds are useful as flame retardants for natural and synthetic materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.