4- Amylphenol

A series of twenty-nine substituted phenols (e.g., alkyl, phenyl, lluoro, diloro, bromo, nitro, and multisubstituted) was studied using a diol column and a 50/50 chloroform/iso-octane mobile phase [611]. In general, retention increased as the polar nature of the solute increased (e.g., in order of increasing retention 2,4,6-tributylphenol < 4-amylphenol < 4-methylphenol < phenol < 4-chlorophenol < 4-nitrophenol). As might be expected, this system showed good isomer selectivity (A for 3-nitrophenol = 4.20, for 4-nitrophenol = 5.50). However this selectivity was not as pronounced as that found using an underivatized silica support. 

The cmde product formed from the alkylation of phenol with isoamylene contains principally 2-/ r2 -amylphenol, 4-/ r2 -amylphenol, and 2,4-di-/ r2 -amylphenol. 4-/ r2 Amylphenol is purified to its typical assay of 99+% by fractional distillation. 4-/ r2 -Amylphenol [80-46-6] is commercially available as a soHd, flaked material packaged ia paper or plastic bags (25 kg net weight) or as a molten material ia tank wagon or railcar quantities. 

Diall lated Phenols. 2,4-Di-tert-amjlphenol (2,4-DTAP) or 2,4-bis(l,l-dimethylpropyl)phenol is produced by the alkylation of phenol with isoamylene under acid catalysis in a mole ratio of 2 1 (isoamylene to phenol). The cmde alkylation product contains 4-/ f2 -amylphenol,... 

Di-/ f2 -amylphenol [25231-47-4] is available in 55-gal dmms (208-L) and bulk quantities in tank wagon and railcar shipments. 

A major use for 2,4-di-/ f2 -amylphenol is in the production of uv stabilizers the principal one is a benzotriazole-based uv absorber, 2-(2 -hydroxy-3, 5 -di-/ f2 -amylphenyl)-5-chlorobenzotriazole [25973-55-17, which is widely used in polyolefin films, outdoor furniture, and clear coat automotive finishes (56). Another significant use for 2,4-di-/ f2 -amylphenol is in the photographic iadustry. A number of phenoxyacetic acid derivatives of... 

The growth rate for 2,4-di-/ f2 -amylphenol is predicted to be above GNP growth rate, mainly driven by the use of the benzotriazole derivative as a uv stabilizer for clear-coat appHcations in auto finishes (see Table 3). 

Sulfur monochloride also reacts with substituted phenols to give condensation products useful for mbber compounding (qv) (150). Elf Atochem NA manufactures products known as Vultacs by the reaction of amylphenols and sulfur monochloride (153). 

Because of lower toxicity and high antimicrobial activity, the phenols having the greatest use in disinfections are o-phenylphenol (Dowicide 1) [90-43-7J, C 2H qO i9-benzyl-/)-chlorophenol (Santophen 1) [120-32-1J, C H CIO and -Z fZ-amylphenol [80-46-6] They possess similar general... 

A few synthetic substituted phenols are also used in the manufacture of oil-soluble resins. They include p-tert-butylphenol, / -tert-amylphenol, p-tert-octylphenol, /7-phenylphenol and dihydroxyphenylpropane (bis-phenol A). 

Figure 17-20. p-tert-Amylphenol, furfuryl alcohol, glucono-5-lactone, and polyoxypropylene. 

Dewatering surfactants can be polyoxyethylene, polyoxypropylene, and polyethylene carbonates [1348] or p-tert-amylphenol condensed with formaldehyde, or they can be composed of a copolymer from 80% to 100% alkyl methacrylate monomers and hydrophilic monomers [777]. Such a well treatment fluid may be used in both fracturing and competition operations to enhance and maintain fracture conductivity over an extended period of production. 

The deep UV induced reactions appear to be slightly different from X-ray and EB induced reactions. Deep UV exposure in air can induce an increase in solubility of SPP, indicating that indenecar-boxylic acid is produced. IR spectra of SPP exposed to deep UV are shown in Figure 11. In this case, we used a mono-functional dissolution inhibitor, tert-amylphenol diazonaphthoquinone sulfonyl ester, instead of a multi-functional sensitizer, DNQ, because the IR spectrum of a mono-functional ester is easier to interpret than that of DNQ. The SPP containing this mono-functional ester also exhibits an image reversal reaction with almost the same characteristics as the SPP with DNQ. 

A second series of reports in the literature purport to discuss the toxicity of phenol to newborns. These, however, deal with an excessive level of hyperbilirubinemia, or jaundice, in newborns in hospital nurseries where a phenolic disinfectant detergent was used to clean the nursery and its equipment (bassinets and mattresses) (Doan et al. 1979, Wysowski et al. 1978). Review of these reports indicated that the detergent did not contain phenol per se. rather it contained more complex phenolics such as o-benzyl-p-chlorophenol and p-tertiary amylphenol. 

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