Process for Mixing Polyvinyl Chloride with a Bio-Based Plasticizer
AssigneeDow Global Technologies LLC
InventorsManish Mundra, Neil W. Dunchus, Anthony C. Neubauer, Caroline H. Laufer, Michael B. Biscoglio, Robert F. Eaton, Abhijit Ghosh-Dastidar
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Abstract
Processes for making a polyvinyl chloride (PVC) dry blend composition with a phthalate-free, bio-based plasticizer and filler, having a bulk density of greater than 0.67 g/cc and an extrusion rate of greater than 65 gm/minute for a single screw extruder of 0.75 in barrel diameter with a 25:1 L:D general purpose polyethylene screw at 75 rotations per minute screw speed, and compositions made by the processes are provided.
Claims13
A process for producing a polyvinyl chloride (PVC) dry blend composition, the process comprising mixing PVC, a phthalate-free bio-based plasticizer, and a filler at a temperature between 25° C. and 70° C. and a time effective to form a dry mixture comprising aggregated PVC particles and a bulk density of greater than 0.67 g/cc.
Dependencies are inferred from the claim text.