Polystyrene (PS)/ Expanded Polystyrene (EPS)

2026-05-15

Organic Peroxides used in Polystyrene(PS)and Expanded Polystyrene(EPS)

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Organic Peroxides – Polymerization initiator of Styrene  .

Polystyrene (PS) is a versatile thermoplastic polymer produced from the monomer styrene,and  known for its durability and high glass transition temperature (above 100°C) . Expanded Polystyrene (EPS) is a lightweight, foam form of PS , known for its excellent cushioning, insulation, and soundproofing properties, is widely used in the manufacture of packaging and insulation materials. 

They are synthesized using free radical polymerization, typically with peroxide initiators to start the reaction.The choice of peroxide (initiator) determines the reaction speed, molecular weight, and quality of the final polystyrene product.

Organic Peroxides used in producing of Polystyrene and Expanded Polystyrene ( EPS) :

Brand Name               Chemical Name      Cas No                       Equivalent 
XJ-LPODilauroyl peroxide105-74-8Laurox , Luperox LP, PEROXAN LP 
XJ-BCHPCDi (4-tert-butylcyclohexyl) peroxydicarbonate15520-11-3
 Perkadox 16, PEROXAN BCC
XJ-BPOBenzoyl Peroxide94-36-0
Perkadox L-W75 ,Perkadox L-W40 , Perkadox BT-50
XJ-TBPBTert-Butyl peroxybenzoate 614-45-9
Trigonox C , Peroxan PB , Luperox P
XJ-DYBP2,5-Dimethyl-2,5-di(tert-butylperoxy)hexyne-31068-27-5Trigonox 145-E85,PEROXAN HXY-85 W
XJ-CH1,1-Bis(tert-butylperoxy)cyclohexane3006-86-8
Trigonox 22-C80 ,Luperox 331M50
XJ-TMCH1,1-Di-(tert-butylperoxy)-3,3,5-trimethylcyclohexane6731-36-8Trigonox 29 , Luperox 231
XJ-TBEC tert-Butylperoxy 2-ethylhexyl carbonate34443-12-4Trigonox 117


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