Polypropylene (PP plastic) is another excellent resin type developed after nylon. It is a kind of linear polymer with high density, no side chain and high crystallization. It has excellent comprehensive performance. It is white translucent and waxy when not painted; lighter than polyethylene. The transparency is also better than polyethylene and harder than polyethylene. It has good gloss, high temperature resistance, and good impact resistance, so plastic basins and plastic buckets are selected as materials.
A high proportion of pigments or additives and thermoplastic resins, well-dispersed plastic colorants, have a good wetting and dispersing effect on the colorant and a good compatibility with the coloring material. Namely: Pigment + Carrier + Additive = Masterbatch