Ⅷ .Black / Color Masterbatch for HDPE and PP-R Pipe Our black and color masterbatches for HDPE and PP Pipes are a palletized form containing various colorants in HEPE and PP resins. They are specially designed to be used as masterbatches only for polyethylene and polypropylene- compatible system to impart bennefits such as effective dispersions of colorants and preserbation of base polymers ( HDPE, PP - R ) properties as HDPE Pressure and PP - R heathing pipes. Characteristics Effective dispersion of colorants in piopes ( HDPE , PP - R pipe ) No Bleeding out of colorants under any severe conditions such as high pressure,high temperature. No problem for food contact. No effect in internal creep rupture strength and heat stability of base polymers ( HDPE, PP ) Items Color Dosage(Phr) Application HDPE Black 80, 100 6~7 PE80 , PE100 Pipe Black  3~4 General Purpose Yellow 2~5 PE80 , PE100 Pipe Blue 2~5 PP - R Green 2~4 PP - R Heating Pipe Grey 2~4 White 2~4 Blue 2~4