Aromatic peroxide

SOME AROMATIC PEROXIDES AND PER-ACIDS Organic peroxides may be prepared —... 

Heterocyclic aromatics in fuel such as pyridine, indole and condensed thiophene compounds are known to darken fuel color. They have also been shown to lead to an increase in the deposit forming tendencies of fuel. Aromatic peroxides can also react to form higher-molecular-weight, sludgelike material in fuel. 

Aromatic peroxides and per-acids, 807 Aromatic substitution, 524, 525 Aromatic sulphonamides, 553... 

Aliphatic or aromatic peroxide curing agents can also be used, by reactions with vinyl side chains or even saturated alkyl groups. Specihc peroxides are chosen on the basis of their decomposition temperatures, and the reaction products they leave behind after the curing process is complete. Some peroxides used are Mv(2,4-dichloroben-zoybperoxide, benzoyl peroxide, dicumyl peroxide, and di-t-butyl peroxide.83-86... 

The effect of inhibitor, peroxide, initiator and amine accelerator on the rate of polymerization of poly(methyl methacrylate) slurries has been studied ( 5, O. Time required to reach the exotherm indicates aromatic peroxides, especially -chlorobenzoyl peroxide, to be the most efficient initiators. Although polymerization in the presence of this compound and N,N-dimethyl-2 toluidine (DMPT) is more rapid initially, it is slower after the exotherm than is a system employing BP-DMPT. Polymerization using the latter initiator-accelerator gives resins with lower residual monomer. 

When these aromatic peroxides are used in thermal curing above 60 C there is a risk of formation of benzene due to excess of initiator (similar to styrene polymerization). 

Organic substances. Examples of compounds determined only at CMCPEs and biosensors nitromethane, nitropropane, polynitroaro-mates (see [180] and Figure 11.4c) aliphatic and aromatic peroxides, selected alkaloids (nicotine, caffeine, and brucine), trichloro- and pentachloro phenol. 

Radical Additions.— Aromatic annelation by reaction of aromatic peroxides with DMAD proceeds by consecutive radical addition to two moles of the latter followed by cyclization (Scheme 9). "... 

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