Mike that PDF refers to injection molded plastics and PP PolyProplene.If you want to improve flowability inE/G the Zeeospheres I suggested a while ago will enhance flow as they are microscopic perfect spheres 20to200 micron and are at par with the hardness of E/G.I appears to be a fine powder but is millions of tiny microspic ballbearings.I posted previously on Zeeospheres but cannot find it in the millions of E/G posts.3M is the manufacturer Zeospheres grade 850 is the least costly.Check it out.
Larry