I-Block Copolymer, i-PPB-4228 isebenzisa inkqubo ye-Spheripol-II ye-Lyondell Basell. Yi-polypropylene ye-impact copolymer enokumelana nobushushu obuphezulu, ukumelana nokuhlanjwa, ukusebenza kakuhle kokucinezela, kunye nokuqina okugqwesileyo kwempembelelo.