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Perbenzoic reaction + cyclohexanone

During the oxidation of benzaldehyde in cyclohexanone solution, the oxidation of cyclohexanone can be considered to be negligible [60]. On the other hand, there is competitive reaction of perbenzoic acid according to... [Pg.115]

Many peroxides affect pol mierization, but those used are available in quantity and the choice is based both on economics and performance. It has been shown that the activity of the organic peroxides in any polymerization is related to their decomposition rates at various temperatures. If elevated cure temperatures, 200- 250°F (93-121°C), are used, benzoyl peroxide is preferred. The amount required is about 1.0 per cent. It is preferred because a long catalyzed tank life results at room temperature. If lower temperatures in the 120 180 F (49-82°C) range are employed, hydroperoxides are more effective. Methyl ethyl ketone peroxide and cumene and ter- tiary butyl hydroperoxide all find application. Lauroyl peroxide, cyclohexanone peroxide, and <-butyl perbenzoate are used in limited amounts. Mixtures of two peroxides are often used, one to initiate the reaction and a second to promote the polymerization once it is started. [Pg.967]

Hardeners. The polymerisation reaction is initiated by peroxide radicals. Typical examples are cyclohexanone peroxide and methyl ethyl ketone peroxide (hydroperoxides), benzoyl peroxide, perbenzoates and peroctoates (acyl peroxides). It is standard to use around 4 % (calculated on the resin and styrene content) of a desensitised supply form (e.g. 50% peroxide in flexibiliser). The manufacturer s instructions are to be observed in handling peroxides. [Pg.58]

The cross-linking reaction is initiated by peroxide catalyst at 50-150°C, or by a redox system at room temperature. Initiators include benzoyl peroxide and t-butyl perbenzoate for high-temperature curing, or methylethylketone peroxide and cyclohexanone peroxide, with cobalt octoate or naphthenate as... [Pg.163]


See other pages where Perbenzoic reaction + cyclohexanone is mentioned: [Pg.173]    [Pg.625]    [Pg.168]    [Pg.1656]   
See also in sourсe #XX -- [ Pg.115 ]




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