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Dicumyl peroxide is an organic compound with the formula (C 6 H 5 CMe 2 O) 2 (Me = CH 3). Classified as a dialkyl peroxide, it is produced on a large scale industrially for use in polymer chemistry. It serves as an initiator and crosslinking agent in the production of low density polyethylene. [2]
Dialkyl peroxides, e.g., dicumyl peroxide, are synthesized by addition of hydrogen peroxide to alkenes or by O-alkylation of hydroperoxides. Diacyl peroxides are typically prepared by treating hydrogen peroxide with acid chlorides or acid anhydrides in the presence of base: [1] H 2 O 2 + 2 RCOCl → (RCO 2) 2 + 2 HCl H 2 O 2 + (RCO) 2 O → ...
UN Number Class Proper Shipping Name UN 2101? (UN No. no longer in use) tert-Butyl peroxymaleate (UN No. no longer in use) [1] UN 2102? (UN No. no longer in use) Di-tert-butyl peroxide (UN No. no longer in use) [1]
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Peroxide crosslinking (PE-Xa): The crosslinking of polyethylene using peroxides (e.g. dicumyl peroxide or di-tert-butyl peroxide) is still of major importance. In the so-called Engel process , a mixture of HDPE and 2% [ 12 ] peroxide is at first mixed at low temperatures in an extruder and then crosslinked at high temperatures (between 200 °C ...
In chemistry, main group peroxides are peroxide derivatives of the main group elements. Many compounds of the main group elements form peroxides ( R−O−O−R' ), and a few are of commercial significance.
One of the two main organic peroxides used, dicumyl peroxide, has principal breakdown products of acetophenone and 2-phenyl-2-propanol. The other is 2,4-dichlorobenzoyl peroxide, whose principal breakdown products are 2,4-dichlorobenzoic acid and 1,3-dichlorobenzene. [6] [7] Crosslinking by organic peroxides
At higher temperatures peroxide decomposition is faster, more polymerization occurs to heat the mixture, which in turn increases peroxide decomposition and polymerizes the monomer even faster. The container dissipates heat more slowly in a higher-temperature environment, so at some critical temperature heat is generated by polymerization faster ...