Is there a small amount of hydrogen in refineries and pyrolyzed propylene?
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I’ve been working on low melt index polypropylene recently, but I can’t get the melt index down. Could there be hydrogen present in the propylene itself? We don’t have any testing methods.
The melt index doesn’t decrease; it’s possible that hydrogen is present in the propylene, but the likelihood is low. Please check whether it’s not due to a low degree of isotacticity in the product, and also whether the raw materials contain methanol and water
I’ve found the reason: it’s a tiny device, really small; it operates at 1%, and there’s a bit of a problem with it.