Resorcinol diphosphate

Mixed esters, such as isopropylphenyl diphenyl phosphate and tcrt-butylphenyl diphenyl phosphate, are also widely used as both plasticizers/flame retardants for engineering thermoplastics and hydraulic fluids.11 These esters generally show slightly less flame-retardant efficacy, when compared to triaryl counterparts however, they have the added advantage of lower smoke production when burned. Some novel oligomeric phosphate flame retardants (based on tetraphenyl resorcinol diphosphate) are also employed to flame retard polyphenylene oxide blends, thermoplastic polyesters, polyamides, vinyls, and polycarbonates. 

Flame retardants based on phosphorous show certain disadvantages. Some of them have to be included in large amounts in order to achieve the desired grade of flame retardancy, however, undesired side effects then emerge. For example, resorcinol diphosphate plasticizes the composition and significantly reduces the heat deflection temperature of the formulation. Examples for phosphorous-based flame retardants for PPE include resorcinol diphosphate, bisphenol A diphosphate, tetraxylyl piperazine di-phosphoramide, ete. Organoclay additives show synergistic effects with phosphates with respeet to flame retardancy. For this reason, the amount... 

Quinolinolate)-aluminum, 37 p-Quinone, 181 Resorcinol, 284, 286, 290 Resorcinol diphosphate, 155 Rubrene, 37... 

Synonyms Phosphoric acid, 1,3-phenylene tetraphenyl ester Tetraphenyl resorcinol diphosphate... 

DMP-RDP Tetra-2,6-dimethylphenyl resorcinol diphosphate DSC Differential scanning calorimetry... 

Styrenics demand is for non-halogens for ABS and high-impact polystyrene there is movement away from resorcinol diphosphate in PC/ ABS blends. 

Tetraphenyl Resorcinol Diphosphate [57583-54-7], This is the main component of an oligomeric phosphate flame retardant, Akzo Nobel s FYROLFLEX RDP or Great Lakes Chemical s REOFOS RDP, designed for use in engineering thermoplastics such as polyphenylene oxide blends (105,106), thermoplastic polyesters, polyamides, polycarbonates, and ABS-polycarbonate blends. A major use was in PPO-HIPS blends and later in ABS-polycarbonate blends (107). It is a colorless to light-yellow liquid, viscosity 400-800 mPa s at 25°C, and a pour point of - 12°C. It is less volatile than the triaryl phosphates and has a higher percentage of phosphorus (11% P) than triphenyl phosphate. 

TCP, Tricresylphosphate TXP, trixylylphosphate RDP, resorcinol diphosphate organoclay, organically modified montmoriUonite, dimethylbenzyl hydrogenated tallow ammonium (hydrogenated tallow is a mixture of 65% C18, 30% C16, 5% C14) substituted clay. 

The possible synergy between nanofillers and phosphorus-based fire retardants such as tricesylphosphate (TCP) and resorcinol diphosphate (RDP), has been investigated. " RDP, for example, gave a reduction in PHRR between 47 and 61% at a loading of 30 wt%. No improvement was obtained by combining an organoclay (Cloisite 15A) with RDP (30 wt%) the reduction in the PHRR was between 48 and 55%. 

Phosphorus-containing flame retardant Resorcinol diphosphate Tricresylphosphate Triphenylphosphate Trixylylphosphate... 

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