Phosphoroamidates
US4086302A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1976 |
| Grant date | Apr 25, 1978 |
| Priority date | — |
| Expiry date | Sep 29, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/650952
- 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) represents 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 orginal hydroxyl-containing moiety, the residue of which is now represented by Z. 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.