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2,3-Dimethyl-2,3-Diphenylbutane
The pyrolysis of 2,3-dimethyl-2,3-diphenylbutane (dibutene) in the temperature range of 220 to 310 ° C was used to initiate free radical mediated graft addition of vinyl triethoxysilane (VTEOS) to polyethylene. Hydrocarbon model studies show that the isopropyl radical generated by the slow decomposition of dibutylene can directly extract hydrogen atoms at a level sufficient to maintain a high kinetic chain length graft propagation sequence. The interaction between O2 and isopropyl radicals can lead to the oxidation of initiators and hydrocarbon substrates, thus strengthening the macromolecular free radical group and improving the grafting rate and yield. In addition to providing a significant dynamic chain length for the addition of VTEOS, the high-temperature dibutylene based process can also induce the fracture of HDPE and LDPE, thus counteracting the effect of free radical combination on the melt viscosity. As a result, an alkoxysilane modified polymer that can be effectively cured by moisture can be produced without causing an undesirable increase in the molecular weight accompanying the conventional grafting process.
2,3-Dimethyl-2,3-Diphenylbutane / Dicumene
Also known as Perkadox 30, Nomfer BC, CCDFB
CAS: 1889-67-4
Molecular Formula: C18H22
Structural Formula:
Molecular Weight: 238
Appearance: White to light yellow powder
Content: 96% (min) (HPLC)
Description of Dicumene:
Dicumene can be used with brominated flame retardants for preparation of polymers, particularly polystyrene and polypropylene. Dicumene will not decompose during polymerization or extrusion procession, and it can reduce the dosing levels of brominated compounds used.
Dicumene is a radical initiator for the crosslinking of polymers at high temperature.
•Environment friendly substitute for Sb2O3
•The dosage is only 30% of traditional Sb2O3
• High thermal stability
• No peroxide
Storage of Dicumene:
Store in cool place, keep container tightly closed in a dry and well-ventilated place.
Packing of Dicumene:
20 kg plastic bag with carton outside
2,3-dimethyl-2,3-diphenylbutane is one of the decomposition products of diisopropyl peroxide (DCP). Diallyl phthalate (DAOP) is a reactive plasticizer initiated by 2,3-dimethyl-2,3-diphenylbutane, which is used to improve the processing of polyphenylene oxide (PPO). 2,3-dimethyl-2,3-diphenylbutane (DMDPB) is a new polymer material additive. It has two main uses: one is as a flame retardant synergist of polymer materials. It can reduce the amount of flame retardant, reduce the impact of flame retardant on polymer properties, and endow polymer materials with flame retardancy. Another use is as a catalyst or initiator for polymer crosslinking, grafting and copolymerization, which can be used for the modification of various polymer materials.
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