Phosphorous-containing epoxide

The phosphorous-containing epoxides (80) are good, flame-resistant materials, especially when used for structural adhesives. A typical phosphorylated epoxide is based on bis-(3-glycidyloxyphenyl)methyl phosphine oxide (BGDDPMPO) ... 

WHITE PHOSPHORIC ACID (7664-38-2) A medium-strong acid. Violent reaction with strong bases. Violent reaction if water is added to concentrated acid. To dilute, always add acid to water heat will be generated. Reacts violently with solutions containing ammonia or bleach, azo compounds, epoxides, and other polymerizable compounds. Reacts, possibly violently, with amines, aldehydes, alkanolamines, alcohols, alkylene oxides, amides, ammonia, ammonium hydrox-ide, calcium oxide, cyanides, epichlorohydrin, esters, halogenated organics, isocyanates, ketones, oleum, organic anhydrides, sodium tetrahydroborate, sulfides. 

To identify epoxides, Bierl et al. [65] suggest the additional use of a column (reactor) containing phosphoric acid, which effectively subtracts most of the epoxides. 

Figure 10 shows die C-GCxGC of a hydraulic fluid. Phosphorous (Fig. 11) P-GCxGC and oxygen 0-GCxGC (Fig. 12) specific detections were consistent with die fact diat the most abundant compound at approximately X = 105 min, Y = 30 s was a phosphate ester. Two additional compounds at approximately X = 115 min, Y = 80 s contained only carbon and oxygen, which was consistent with dieir identification as epoxides.

There is little information about phosphorus containing CECs in the litera-ture.The synthesis of phosphoric CECs is based on the addition of phosphite esters and glycidyl ethers or esters. Both reactants contain cyclohexene rings which are further epoxidized with PAA in CHCI3 (Scheme 54). 

Among new epoxides are two families containing fluorine and phosphorous, respectively. The fluoro-epoxides prepared by Griffith (76,77) at the Naval Research Laboratory have the following general structure ... 

Compounds containing certain functional groups can be subtracted (retained) by a chemical placed in the GC pathway 61, 63, 64). The structure of the gypsy moth (Lymantria dispar) sex pheromone (536) was provided in part when it was subtracted by phosphoric acid, which is known to remove epoxides (57). 

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