- Green synthesis and self-association of 2,4-diamino-1,3,5-triazine derivatives
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2,4-Diamino-1,3,5-triazines have been prepared by reaction of dicyandiamide with nitriles under microwave irradiation, a method that can be considered as a green procedure due to the reduction in the use of solvents during synthesis and purification, the short reaction time and the simplicity of the procedure. The structures have been confirmed in solution by NMR spectroscopy. Variable temperature experiments have been used to calculate the free energy of activation for rotation about the amino-triazine bond. The crystal structures of three 2,4-diamino-6-R-1,3,5-triazine derivatives (3a: R = phenyl, 3i: R = 1-piperidino and 3g: R = 1-phenylpyrazol-3-yl) have been determined by X-ray analysis. The N-H...N interactions change from structure to structure, resulting in a variation from pseudo-honeycomb networks to corrugated rosette layers.
- Diaz-Ortiz, Angel,Elguero, Jose,Foces-Foces, Concepcion,De La Hoz, Antonio,Moreno, Andres,Del Carmen Mateo, Maria,Sanchez-Migallon, Ana,Valiente, Gema
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- Salts of triazine compounds with cyanuric acid
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Salts of triazine compounds with cyanuric acid, of general formula (I): STR1 obtained by salifying 2,4,6-triamino-1,3,5-triazine derivatives with cyanuric acid. The new salts of general formula (I) are used in particular as flame retardant additives.
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- Salts of triazinic compounds with oxygenated acids of phosphorus
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Salts of triazinic compounds with oxygenated acids of phosphorus, of the eral formula (I): STR1 wherein: at least one of radicals for R to R5 is: STR2 being: m=an integer comprised between 2 and 8; p=an integer comprised between 2 and 6; The new salts having the general formula (I) are applied, in particular, as anti-flame additives for polymers.
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- Salts of triazine compounds with cyanuric acid as flame retardants
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Salts of triazine compounds with cyanuric acid, of general formula (I): obtained by salifying 2,4,6-triamino-1,3,5-triazine derivatives with cyanuric acid. The new salts of general formula (I) are used in particular as flame retardant additives.
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- Salts of triazine derivatives with oxygenated acids of phosphorus
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Disclosed are salts of triazine derivatives with oxygenated acids of phosphorus having the general formula (I): wherein the radicals R and R1 to R7 and subscript n are as defined in claim 1. Said salts are particularly useful as flame-retardant additives for polymers.
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