Patent GB-966525-A (GB)
Title: Compounds containing phosphorus
Inventor: FIELDING HAROLD CROSBIE
IPC: C08G18/38
Filed: 1960-04-19
Abstract: A process for making novel phosphorus compounds comprises reacting under anhydrous conditions an isocyanate of phosphorus having the general formula RnP(NCO)3-n or RnP(O)(NCO)3n in which R is ethyl, isopropyl or a phenyl radical and n is 0, 1 or 2, with a compound, the molecule of which contains one or more reactive hydrogen atoms in hydroxyl or amino groups directly attached to an atom other than carbon. The reaction may be carried out in ether, benzene, xylene, or aceto-nitrile in the presence, if desired, of a catalyst chosen from tertiary amines, e.g. triethylamine, or organotin compounds, e.g. dibutoxy tin diacetate, at a temperature up to the boiling-point of the medium.  The compounds containing amino groups are specified as ammonia, hydrazine, phosphoryl triamide, sulphuryl amide, and dibutoxy silane diamine; whilst those containing OH groups are given as "o" phosphoric acid, diethylphosphite, phenyl phosphonic acid, boric acid, phenyl boronic acid, substituted silane diols and the hydroxides of Ca, Mg, Zn, Al and Mo.  When the compounds are polyfunctional, i.e. contain more than one NH2 or OH group then the reaction product can be polymeric.  The polymers obtained using the inorganic NH2 compounds, e.g. ammonia and hydrazine, may be further cross-linked with formaldehyde to give textile additives which impart flame resistance to the textile.ALSO:A process for making novel phosphorus compounds comprises reacting under anhydrous conditions an isocyanate of phosphorus having the general formula: RnP(NCO)3-n or RnP(O)(NCO)3-n in which R is an ethyl, isopropyl or a phenyl radical and n is 0, 1 or 2, with a compound, the molecule of which contains one or more reactive hydrogen atoms in hydroxyl or amino groups directly attached to an atom other than carbon. The reaction may be carried out in ether, benzene, xylene or aceto-nitrile in the presence, if desired, of a catalyst chosen from tertiary amines, e.g. triethylamine, or organo-tin compounds, e.g. dibutoxy tin diacetate, at a temperature up to the boiling point of the medium. The compounds containing amino groups are specified as ammonia, hydroxylamine, hydrazine, phosphoryl triamide, sulphuryl amide, and dibutoxy silane diamine; whilst those containing -OH groups are given as o phosphoric acid, diethyl phosphite, phenyl phosphonic acid, boric acid phenyl boronic acid, substituted silane diols and the hydroxides of Ca, Mg, Zn, Al and Mo. When the compounds are polyfunctional, i.e. contain more than one NH2 or OH group then the reaction product can be polymeric. Some of the products of the above reaction are claimed. The polymers obtained using the inorganic NH2 compounds, e.g. hydrazine and ammonia, may be further cross linked with formaldehyde to give textile additives which impart flame resistance to the textile.ALSO:A process for making novel phosphorus compounds, which may be polymers, comprises reacting under anhydrous conditions an isocyanate of phosphorus having the general formula RnP(NCO)3-n or RnP(O) (NCO)3-n in which R is an ethyl, isopropyl or a phenyl radical and n is 0, 1 or 2, with a compound, the molecule of which contains one or more reactive hydrogen atoms in hydroxyl or amino groups directly attached to an atom other than carbon.  The reaction may be carried out in ether, benzene, xylene or acetonitrile in the presence, if desired, of a catalyst chosen from tertiary amines, e.g. triethylamine, or organo tin compounds, e.g. dibutoxy tin diacetate, at a temperature up to the boiling point of the medium. The compounds containing amino groups are specified as ammonia, hydrazine, phosphoryl triamide, sulphonyl amide and dibutoxy silane diamine; whilst those containing OH groups are given as o1phosphoric acid, diethylphosphite, phenyl phosphonic acid, boric acid, phenyl boronic acid, substituted silane diols and the hydroxides of Ca, Mn, Zn, Al and Mo.  When the compounds are polyfunctional, i.e. contain more than one NH2 or OH group, then the reaction product may be polymeric, Certain of the polymeric reaction products are claimed, The polymers obtained using inorganic NH2 compounds e.g. ammonia and hydrazine, may be further cross-linked with formaldehyde to give textile additives which import flame resistance to the textile.