①Dicumene bụ oke dị irè, gburugburu ebe obibi na-adị mma na-egbu egbu na-ere ahịa na-atụ aro maka ịmị mkpụrụ polystyrenenener (xps). Ngwaahịa nwere ike dochie ndị sonji ọdịnala ma wedata ala nke oke igwe metal siri ike (dịka ịgba ọgwụ SB2O3). Enwere ike iji ③it nwere ike iji ya na ire ọkụ nke polypropylene na polyethylene. Enwere ike iji ④it nwere ike iji ya na ire ọkụ nke polypropylene na polyethylene.