I-Block Copolymer, i-PPB-4228 isebenzisa inqubo ye-Spheripol-II ye-Lyondell Basell. Iyi-polypropylene ye-impact copolymer enokumelana nokushisa okuphezulu, ukumelana nokuwasha, ukusebenza kahle kokucindezela, kanye nokuqina okuhle kakhulu kokuthinta.