Phosphoroamidates
Patent 4086302 Issued on April 25, 1978. Estimated Expiration Date: 
April 25, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 25, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2870189 2944075 2950308 InventorsApplicationNo. 727913 filed on 09/29/1976US Classes:558/157, Nitrogen bonded directly to phosphorus528/398, FROM PHOSPHORUS-CONTAINING REACTANT528/422, NITROGEN-CONTAINING REACTANT536/117, Phosphorus containing544/57, Phosphorus containing544/84, Phosphorus attached directly or indirectly to a morpholine ring by nonionic bonding544/157, Phosphorus attached directly or indirectly to morpholine ring by nonionic bonding544/337, Phosphorus attached directly or indirectly to the diazine ring by nonionic bonding546/21, Phosphorus attached directly to the six-membered hetero ring by nonionic bonding548/111, Phosphorus attached directly to the five-membered hetero ring by nonionic bonding558/162, Plural phosphori attached indirectly to each other by a benzene ring or by a chain which includes a benzene ring558/199, Nitrogen bonded directly to the phosphorus558/200, Benzene ring and the phosphorus bonded directly to the same chalcogen (i.e., the carbon of the phosphorus ester group is part of a benzene ring)987/82, N atom of ring is bonded directly to a P atom or is indirectly bonded to a P atom other than through a ring atom of the six-membered ring (9/6509B4E)987/202, Q-C-(X)-P-(N) or compound contains two or more P atoms and wherein Q contains an atom other than C or H (9/24A; 9/24A1; 9/24A6)987/366Six-membered ring (9/65A6; 9/65A6E; 9/65A6G; 9/65A6J; 9/65A6K; 9/65A6K2; 9/65A6K4; 9/65A6M; 9/65A6R; 9/65A6V)ExaminersPrimary: Raymond, Richard L.Attorney, Agent or FirmInternational ClassesC07F 009/24C07F 009/65 AbstractCompounds of the formulas ##STR1## WHEREIN: X represents oxygen or sulfur;Z represents the residue of a hydroxyl-containing moiety;R1 and R2 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;Nr1 r2 in formula (2) represents a 5 or 6 member ring containing oxygen, sulfur or nitrogen or combination thereof;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.Field of SearchPhosphorus containing |
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